Chemomechanics: a bridge across the formidable gap
Lead Research Organisation:
University of Liverpool
Department Name: Chemistry
Abstract
The overarching objective of this proposal is to validate experimentally and bring to a new level of utility a conceptual framework for understanding and exploiting the chemical response of polymeric materials to mechanical loads.
The enormous technological importance of polymeric materials is due largely to the remarkable range of their mechanical properties, i.e., their responses to mechanical loads. At the macroscopic scale such loads (stresses) change bulk shapes of objects, but the material response extends across many orders of magnitude in length and time. Almost as soon as the nature of polymers had been recognized certain simple manipulations of polymer solids, melts or solutions were shown to result in fragmentation of polymer backbones without the high temperatures that are normally required for strong covalent bonds to break at detectable rates. The effect is often called mechanochemistry. Mechanochemistry is thought to be important in controlling (1) crack propagation and catastrophic materials failure, (2) stability of surface-anchored polymers in microfluidic diagnostics and high-performance chromatography and (3) behavior of desalination membranes, impact-resistant materials (e.g., bulletproof vests) and tires; and in affecting technological processes as diverse as (4) jet injection (e.g., during inkjet material deposition in organic electronics), (5) polymer melt processing, (6) high-performance lubrication, (7) enhanced oil recovery (e.g., polymer flooding), (8) turbulence drag reduction (e.g., in pipelines, fire fighting, irrigation). Exploiting coupling between localized reactivity and mechanical loads could both advance these technologies and yield fundamentally new materials and processes, including polymer photoactuation (i.e., direct conversion of light into motion to power autonomous nanomechanical devices, control information flow in optical computing, position mirrors or photovoltaic cells in solar capture schemes), efficient capture of waste mechanical energy, materials capable of autonomous reporting of internal stresses and self-healing and tools to study polymer dynamics at sub-nm scales.
To realize this remarkable potential fully the materials science community needs a set of theoretical, computational, synthetic and physicochemical tools and models to guide our effort to identify chemical compositions and molecular structures of monomers and polymer architectures that yield bulk materials with desired stress-responsive characteristics and to enable molecular studies of polymer dynamics particularly at the 5-100 nm lengthscale (the so called "formidable gap"). Achieving this goal requires a general, quantitative understanding of the relationship between the macroscopic parameters that define mechanical loads (e.g., stress or strain tensors) and the molecular properties that govern the changes in chemical reactivity (e.g., energies of activation). EPSRC funding will enable us to develop such understanding with a program that integrates (macro)molecular design and synthesis, physical measurements (using a variety of modern spectroscopic techniques, including single-molecule force spectroscopy and high-resolution X-ray photoelectron spectroscopy), instrument design, quantum-chemical computations, statistical-mechanics and finite-element modeling and theory.
To accomplish this overall objective we will use a series of reactive monomers specifically designed for efficient and accurate kinetic measurements of localized reactivity and molecular interpretation of the results across the whole range of physical systems whose behavior is governed by dynamics of stretched macromolecules. These systems range from individual isolated stretched polymer chains all the way to bulk amorphous polymers under load.
The enormous technological importance of polymeric materials is due largely to the remarkable range of their mechanical properties, i.e., their responses to mechanical loads. At the macroscopic scale such loads (stresses) change bulk shapes of objects, but the material response extends across many orders of magnitude in length and time. Almost as soon as the nature of polymers had been recognized certain simple manipulations of polymer solids, melts or solutions were shown to result in fragmentation of polymer backbones without the high temperatures that are normally required for strong covalent bonds to break at detectable rates. The effect is often called mechanochemistry. Mechanochemistry is thought to be important in controlling (1) crack propagation and catastrophic materials failure, (2) stability of surface-anchored polymers in microfluidic diagnostics and high-performance chromatography and (3) behavior of desalination membranes, impact-resistant materials (e.g., bulletproof vests) and tires; and in affecting technological processes as diverse as (4) jet injection (e.g., during inkjet material deposition in organic electronics), (5) polymer melt processing, (6) high-performance lubrication, (7) enhanced oil recovery (e.g., polymer flooding), (8) turbulence drag reduction (e.g., in pipelines, fire fighting, irrigation). Exploiting coupling between localized reactivity and mechanical loads could both advance these technologies and yield fundamentally new materials and processes, including polymer photoactuation (i.e., direct conversion of light into motion to power autonomous nanomechanical devices, control information flow in optical computing, position mirrors or photovoltaic cells in solar capture schemes), efficient capture of waste mechanical energy, materials capable of autonomous reporting of internal stresses and self-healing and tools to study polymer dynamics at sub-nm scales.
To realize this remarkable potential fully the materials science community needs a set of theoretical, computational, synthetic and physicochemical tools and models to guide our effort to identify chemical compositions and molecular structures of monomers and polymer architectures that yield bulk materials with desired stress-responsive characteristics and to enable molecular studies of polymer dynamics particularly at the 5-100 nm lengthscale (the so called "formidable gap"). Achieving this goal requires a general, quantitative understanding of the relationship between the macroscopic parameters that define mechanical loads (e.g., stress or strain tensors) and the molecular properties that govern the changes in chemical reactivity (e.g., energies of activation). EPSRC funding will enable us to develop such understanding with a program that integrates (macro)molecular design and synthesis, physical measurements (using a variety of modern spectroscopic techniques, including single-molecule force spectroscopy and high-resolution X-ray photoelectron spectroscopy), instrument design, quantum-chemical computations, statistical-mechanics and finite-element modeling and theory.
To accomplish this overall objective we will use a series of reactive monomers specifically designed for efficient and accurate kinetic measurements of localized reactivity and molecular interpretation of the results across the whole range of physical systems whose behavior is governed by dynamics of stretched macromolecules. These systems range from individual isolated stretched polymer chains all the way to bulk amorphous polymers under load.
Planned Impact
I suggest that in the short-term (2-4 years) the main beneficiaries will be academic scientists who design, synthesize and study stress-responsive polymers. Over mid-term (4-7 years) broader materials science community will benefit from increased awareness of the diverse chemistry that contributes to the behavior of polymeric materials under loads, a wider adoption of the conceptual framework and experimental tools to study polymer behavior under load that we'll develop and validate, and broad recognition of the opportunities that exploiting coupling between local reactivity and load creates for designing new materials and processes. The most direct societal impact of the proposed program will likely result from it enabling the development of new materials and processes. First such processes and materials may become marketable within ~10 years. Over the next ~15 years the idea of mechanical load as a variable in chemical kinetics could become sufficiently well known to be incorporated in chemical intuition with the potential impact on chemical research similar to that of the broad adoption of the transition state theory by the synthetic community.
A fundamental challenge in the modern materials science is the development of conceptual frameworks, models, and experimental and computational tools to enable engineering bulk materials properties at the molecular level. Our project will contribute to meeting this challenge by developing comprehensive understanding of how localized chemical reactions control the response of polymers to loads. Modern materials are constantly subject to mechanical loads, from production through disposal or recycling, and their response to such loads often determines their technological value. Considerable empirical evidence exists of mechanical loads dramatically altering the kinetic stability of individual covalent bonds making up the material. Such load-induced highly-localized chemistry has been shown, or is thought, to control (1) crack propagation that contributes to catastrophic materials failure, (2) stability of surface-anchored polymers in microfluidic diagnostics and high-performance chromatography and (3) behavior of desalination membranes, impact-resistant materials (e.g., bulletproof vests) and tires; and to affect technological processes as diverse as (4) jet injection (e.g., during inkjet polymer deposition in organic electronics), (5) polymer melt processing, (6) high-performance lubrication, (7) enhanced oil recovery (e.g., polymer flooding), (8) turbulence drag reduction (e.g., in pipelines, fire fighting, irrigation). Exploiting coupling between localized reactivity and mechanical loads could both advance the above technologies and yield fundamentally new materials and processes, including polymer photoactuation (i.e., direct conversion of light into motion, to power autonomous nanomechanical devices, control information flow in optical computing, adjust positions of mirrors or photovoltaic cells in solar capture approaches and refresh electronic Braille displays), efficient capture of waste mechanical energy, materials capable of autonomous reporting of internal stresses and self-healing and tools to study polymer rheology and dynamics at sub-nm scales.
Despite considerable progress made through empirical approaches, these benefits are unlikely to be fully unrealized until our fundamental understanding of coupling between localized reactivity and mechanical loads becomes far more sophisticated. Such coupling occurs across the "formidable gap", the 5 - 100 nm lengthscale, where neither continuum mechanics nor chemical kinetics alone offer adequate description of dynamics and experimental tools to study the dynamics are particularly limited. Whereas much effort has been devoted to scaling this gap from the continuum-mechanics limit, we'll bridge it using chemical tools, positioning chemistry at the center of solving one of the "Grand Challenges" on the 21st century.
A fundamental challenge in the modern materials science is the development of conceptual frameworks, models, and experimental and computational tools to enable engineering bulk materials properties at the molecular level. Our project will contribute to meeting this challenge by developing comprehensive understanding of how localized chemical reactions control the response of polymers to loads. Modern materials are constantly subject to mechanical loads, from production through disposal or recycling, and their response to such loads often determines their technological value. Considerable empirical evidence exists of mechanical loads dramatically altering the kinetic stability of individual covalent bonds making up the material. Such load-induced highly-localized chemistry has been shown, or is thought, to control (1) crack propagation that contributes to catastrophic materials failure, (2) stability of surface-anchored polymers in microfluidic diagnostics and high-performance chromatography and (3) behavior of desalination membranes, impact-resistant materials (e.g., bulletproof vests) and tires; and to affect technological processes as diverse as (4) jet injection (e.g., during inkjet polymer deposition in organic electronics), (5) polymer melt processing, (6) high-performance lubrication, (7) enhanced oil recovery (e.g., polymer flooding), (8) turbulence drag reduction (e.g., in pipelines, fire fighting, irrigation). Exploiting coupling between localized reactivity and mechanical loads could both advance the above technologies and yield fundamentally new materials and processes, including polymer photoactuation (i.e., direct conversion of light into motion, to power autonomous nanomechanical devices, control information flow in optical computing, adjust positions of mirrors or photovoltaic cells in solar capture approaches and refresh electronic Braille displays), efficient capture of waste mechanical energy, materials capable of autonomous reporting of internal stresses and self-healing and tools to study polymer rheology and dynamics at sub-nm scales.
Despite considerable progress made through empirical approaches, these benefits are unlikely to be fully unrealized until our fundamental understanding of coupling between localized reactivity and mechanical loads becomes far more sophisticated. Such coupling occurs across the "formidable gap", the 5 - 100 nm lengthscale, where neither continuum mechanics nor chemical kinetics alone offer adequate description of dynamics and experimental tools to study the dynamics are particularly limited. Whereas much effort has been devoted to scaling this gap from the continuum-mechanics limit, we'll bridge it using chemical tools, positioning chemistry at the center of solving one of the "Grand Challenges" on the 21st century.
Publications
Akbulatov S
(2017)
Experimentally realized mechanochemistry distinct from force-accelerated scission of loaded bonds.
in Science (New York, N.Y.)
Akbulatov S
(2017)
Experimental Polymer Mechanochemistry and its Interpretational Frameworks
in ChemPhysChem
Akbulatov S
(2017)
Experimental Polymer Mechanochemistry and its Interpretational Frameworks.
in Chemphyschem : a European journal of chemical physics and physical chemistry
Boulatov R
(2017)
The Challenges and Opportunities of Contemporary Polymer Mechanochemistry.
in Chemphyschem : a European journal of chemical physics and physical chemistry
Chan APY
(2021)
Selective, radical-free activation of benzylic C-H bonds in methylarenes.
in Chemical communications (Cambridge, England)
Chan APY
(2022)
Selective ortho-C-H Activation in Arenes without Functional Groups.
in Journal of the American Chemical Society
He X
(2023)
Coumarin Dimer Is an Effective Photomechanochemical AND Gate for Small-Molecule Release.
in Journal of the American Chemical Society
Jakoobi M
(2019)
Reversible Insertion of Ir into Arene Ring C-C Bonds with Improved Regioselectivity at a Higher Reaction Temperature.
in Journal of the American Chemical Society
Kean Z
(2014)
Photomechanical Actuation of Ligand Geometry in Enantioselective Catalysis
in Angewandte Chemie
Kean ZS
(2014)
Photomechanical actuation of ligand geometry in enantioselective catalysis.
in Angewandte Chemie (International ed. in English)
O'Neill R
(2024)
Mechanochemical Approaches to Fundamental Studies in Soft-Matter Physics
in Angewandte Chemie
O'Neill R
(2024)
Mechanochemical Approaches to Fundamental Studies in Soft-Matter Physics
in Angewandte Chemie International Edition
O'Neill RT
(2023)
Experimental quantitation of molecular conditions responsible for flow-induced polymer mechanochemistry.
in Nature chemistry
Pan Y
(2020)
A Mechanochemical Reaction Cascade for Controlling Load-Strengthening of a Mechanochromic Polymer.
in Angewandte Chemie (International ed. in English)
Pan Y
(2020)
A Mechanochemical Reaction Cascade for Controlling Load-Strengthening of a Mechanochromic Polymer
in Angewandte Chemie
Sun C
(2019)
Applications of Photoswitches in the Storage of Solar Energy
in ChemPhotoChem
Tian Y
(2020)
A Polymer with Mechanochemically Active Hidden Length.
in Journal of the American Chemical Society
Tian Y
(2021)
Selective cleavage of unactivated arene ring C-C bonds by iridium: key roles of benzylic C-H activation and metal-metal cooperativity.
in Chemical science
Tian Y
(2016)
Comment on T. Stauch, A. Dreuw, "Stiff-stilbene photoswitch ruptures bonds not by pulling but by local heating", Phys. Chem. Chem. Phys., 2016, 18, 15848.
in Physical chemistry chemical physics : PCCP
Wang J
(2016)
Mechanical gating of a mechanochemical reaction cascade.
in Nature communications
Wang JX
(2019)
Ratiometric O2 sensing based on selective self-sensitized photooxidation of donor-acceptor fluorophores.
in Chemical communications (Cambridge, England)
Wang L
(2020)
Mechanochemical Regulation of Oxidative Addition to a Palladium(0) Bisphosphine Complex.
in Journal of the American Chemical Society
Wang Y
(2018)
A light-driven molecular machine based on stiff stilbene.
in Chemical communications (Cambridge, England)
Yokochi H
(2023)
Sacrificial Mechanical Bond is as Effective as a Sacrificial Covalent Bond in Increasing Cross-Linked Polymer Toughness.
in Journal of the American Chemical Society
Yu Y
(2021)
Force-modulated reductive elimination from platinum(ii) diaryl complexes.
in Chemical science
Yu Y
(2023)
Allosteric control of olefin isomerization kinetics via remote metal binding and its mechanochemical analysis
in Nature Communications
Zhang H
(2016)
Mechanochromism and Mechanical-Force-Triggered Cross-Linking from a Single Reactive Moiety Incorporated into Polymer Chains.
in Angewandte Chemie (International ed. in English)
Zhang H
(2016)
Cover Picture: Mechanochromism and Mechanical-Force-Triggered Cross-Linking from a Single Reactive Moiety Incorporated into Polymer Chains (Angew. Chem. Int. Ed. 9/2016)
in Angewandte Chemie International Edition
Zhang H
(2017)
Multi-modal mechanophores based on cinnamate dimers.
in Nature communications
Zhang H
(2019)
Mechanochromism and optical remodeling of multi-network elastomers containing anthracene dimers.
in Chemical science
Description | Our EPSRC-supported work aims at developing the conceptual framework of polymer mechanochemistry, which I defined along with the opportunities it offers, in ChemPhysChem 2017, 18, 1419 and 1422. Our upcoming paper in Nature Reviews Chemistry summarizes the progress made and the outstanding challenges. Our recent publications address major barriers to developing this conceptual framework, including theoretical and experimental elaboration of the factors that determine the diversity of mechanochemical responses (Science, 2017, 357, 299), approaches to exploiting this diversity in practice by integrating multiple productive mechanochemical responses in a single reactive site (Nature Commun., 2017, 8, 147 and Angewandte Chemie 2016, 55, 3040) and strategies of expanding this diversity with molecular mechanochemical feedback loops (Nature Commun. 2016, 7, 13433). We also demonstrated how the methodology developed for mechanochemistry is useful in other fields, including molecular machines (Chem.Comm. 2018, 54, 7991), organometallic catalysis (paper under review in J. Am. Chem. Soc.) and solar thermal energy storage (paper under review in ChemPhotoChem). |
Exploitation Route | 1. perhaps of greatest significance but also one that will take the longest to be widely adopted are our experimental and modeling methodology to map the distribution of forces along polymer chains is complex loading environments. We have so far demonstrated experimentally the application of this methodology to transient elongational flows generated during sonication and showed computationally that the same principle is likely to work in amorphous materials. 2. The chemistry for multi-modal mechanoresponsive materials is likely to find relevance much faster and may be adopted more broadly than we originally anticipated because it already allows fairly simple (albeit only semi-quantitative unlike 1) estimates of force distribution and relaxation dynamics in amorphous polymers and shows clear application potential. 3. The community is increasingly adopting our approach to quantitative discussions of mechanochemical phenomena based on a series of models we described in 2009-2012 |
Sectors | Aerospace Defence and Marine Chemicals Electronics Transport |
Description | Results collected and methods developed with this funding resulted in 3 industrial collaborations with the total funding of >£1M to date and pending funding of up to ~£300k. Of these, two industrial collaborations have now completed, one is ongoing and one proposal is pending. In one collaboration, we extended the proof-of-the-approach demonstration, funded by this award, to a new category of commercially-important materials; this enabled the industrial partner to identify new composition, microstructures and formulations that are now being evaluated internally. In another collaboration, the modeling tools that we developed with this funding to describe changes in the composition and microstructure of a mechanically loaded polymer are now being applied to estimate and predict how such mechanochemical changes affect bulk properties of widely-used material in an important industrial process. IN the ongoing collaboration, we are contributing to the development of first-in-industry "digital twin" of a complex process. |
First Year Of Impact | 2018 |
Sector | Aerospace, Defence and Marine,Chemicals,Manufacturing, including Industrial Biotechology,Transport,Other |
Impact Types | Economic |
Description | Knowledge Exchange |
Amount | £14,400 (GBP) |
Organisation | University of Liverpool |
Sector | Academic/University |
Country | United Kingdom |
Start | 12/2014 |
End | 03/2015 |
Description | Mechanochromic rotaxane-crosslinked polymers for fundamental studies of elastomers that are both strong and tough |
Amount | £12,000 (GBP) |
Organisation | The Royal Society |
Sector | Charity/Non Profit |
Country | United Kingdom |
Start | 03/2019 |
End | 03/2023 |
Description | Photoactuating polymers of stiff stilbene |
Amount | $110,000 (USD) |
Funding ID | 58885-ND7 |
Organisation | American Chemical Society |
Sector | Academic/University |
Country | United States |
Start | 08/2018 |
End | 08/2021 |
Description | industry/academia partnership |
Amount | £131,920 (GBP) |
Organisation | Michelin |
Sector | Private |
Country | France |
Start | 09/2014 |
End | 09/2015 |
Description | industry/academia partnership |
Amount | £250,109 (GBP) |
Organisation | Michelin |
Sector | Private |
Country | France |
Start | 12/2015 |
End | 03/2019 |
Description | international exchanges |
Amount | £12,000 (GBP) |
Organisation | The Royal Society |
Sector | Charity/Non Profit |
Country | United Kingdom |
Start | 03/2015 |
End | 02/2017 |
Description | international exchanges |
Amount | £12,000 (GBP) |
Organisation | The Royal Society |
Sector | Charity/Non Profit |
Country | United Kingdom |
Start | 11/2014 |
End | 10/2016 |
Description | newton advanced fellowship |
Amount | £111,000 (GBP) |
Funding ID | na140159 |
Organisation | The Royal Society |
Sector | Charity/Non Profit |
Country | United Kingdom |
Start | 03/2015 |
End | 02/2019 |
Description | Mechanochromic rotoxanes |
Organisation | Tokyo Institute of Technology |
Country | Japan |
Sector | Academic/University |
PI Contribution | we designed rotoxane-crosslinkers to yield a desired, pre-determined response when the material is stretched. |
Collaborator Contribution | synthesize the materials and conduct preliminary characterization of mechanical properties. |
Impact | no publications yet. |
Start Year | 2019 |
Description | Multi-stage mechanocatalysts |
Organisation | Duke University |
Country | United States |
Sector | Academic/University |
PI Contribution | We carried out extensive DFT calculations of the reaction mechanism and assessed several candidate structures to identify the most likely active catalysts. We also advised on kinetic analysis and data modelling |
Collaborator Contribution | The partner carried out all experimental work (synthesis, kinetic and thermodynamic measurements) |
Impact | Yu, Y.; Weng, C.; Wang, L.; Sun, C.; Boulatov, R.; Widenhoefer, R. A.; Craig, S. L. Force-Modulated Reductive Elimination from Platinum(II) Diaryl Complexes. Chem. Sci., 2021, 12, 11130 - 11137 Wang, L.; Yu, Y.; Razgoniaev, A.; Johnson, P.; Wang, C.; Tian Y.; Boulatov, R. ; Craig, S. L.; Widenhoefer, R. A. Mechanochemical Regulation of Oxidative Addition to a Palladium(0) Bisphosphine Complex. J. Am. Chem. Soc., 2020, 142 , 17714-17720 |
Start Year | 2016 |
Description | Single-molecule force spectroscopy |
Organisation | Duke University |
Country | United States |
Sector | Academic/University |
PI Contribution | We have designed and synthesized a series of polymers displaying a new type of mechanochemistry - allosteric (feedback) mechanochemistry. We have also performed high level quantum-mechanical calculations to explain and generalize the results of SMF experiments conducted by the partner |
Collaborator Contribution | measured single-molecule force behavior of polymers |
Impact | Wang, J.; Kouznetsova, T.; Boulatov, R.; Craig S. Mechanical Gating of a Mechanochemical Reaction Cascade. Nature Commun., 2016 7, 13433-13451 |
Start Year | 2015 |
Description | Stiff-stilbene for molecular photoactuation |
Organisation | Beijing Normal University |
Country | China |
Sector | Academic/University |
PI Contribution | We have used the computational and modeling tools developed with this funding to design molecules for molecular photoactuation using stiff stilbene |
Collaborator Contribution | the partners synthesized the designed compounds and performed the experiments |
Impact | Wang, J.; Zhang, H.; Niu, L.; Zhu, X.; Kang, Y.; Boulatov, R.; Yang Q. Organic Composite Crystal with Persistent Room-Temperature Luminescence above 650 nm. CCS-Chem., 2020, 2, 1391-1398 Wang, J.; Niu, L.; Chen, P.; Chen, Y.; Yang, Q.; Boulatov, R. Ratiometric O2 Sensing Based on Selective Self-Sensitized Photooxidation of Donor-Acceptor Fluorophores. Chem. Commun. , 2019, 55, 7017-7020 Wang, Y.; Tian, Y.; Chen, Y.; Niu, L.; Wu, L.; Tung, C.; Yang, Q.; Boulatov, R. A light-driven molecular machine based on stiff stilbene. Chem. Commun. , 2018, 54, 7991-7994 |
Start Year | 2016 |
Description | mechanochromic materials |
Organisation | Xiamen University |
Country | China |
Sector | Academic/University |
PI Contribution | We used the computational and modeling tools developed with this award to design new types of mechanochromic compounds. |
Collaborator Contribution | synthesized the designed molecules and peformed some physicochemical experiments. |
Impact | Tian, Y.; Cao, X.; Li, X.; Zhang, H.; Sun, C.; Xu, Y.; Weng. W.; Zhang, W.; Boulatov, R. A polymer with mechanochemically active hidden length. J. Am. Chem. Soc., 2020, 142, 18687-18697 (cover article) Pan, Y.; Zhang, H.; Xu, P.; Tian, Y.; Wang, C.; Xiang, S.; Boulatov, R.; Weng, W. A mechanochemical reaction cascade for controlling load-strengthening of a mechanochromic polymer. Angew. Chem. Int. Ed., 2020, 59, 21980-21985 (hot article) Zhang, H.; Zeng, D.; Pan, Y.; Chen, Y.; Ruana, Y.; Xua, Y.; Boulatov, R.; Creton, C.; Weng, W. Mechanochromism and optical remodeling of multi-network elastomers containing anthracene dimers. Chem. Sci. , 2019, 10, 8367-8373 Zhang, H.; Li, X.; Lin, Y.; Gao, F.; Tang, Z.; Su, P.; Zhang, W.; Xu, Y.; Weng, W.; Boulatov, R. Multimodal mechanophores based on cinnamate dimers. Nature Commun., 2017, 8, 1147 Zhang, H.; Gao, F.; Cao, X.; Li, Y.; Xu, Y.; Weng, W.; Boulatov, R. Mechanochromism and Mechanical Force-Triggered Cross-Linking from a Single Reactive Moiety Incorporated into Polymer Chains. Angew. Chem. Int. Ed., 2016, 55, 3040-3044 (cover article) |
Start Year | 2015 |
Description | Annual Supramolecular and POlymer Chemistry Lecture, Jilin University and Key Lab of Chinese Academy of Sciences |
Form Of Engagement Activity | A talk or presentation |
Part Of Official Scheme? | No |
Geographic Reach | International |
Primary Audience | Professional Practitioners |
Results and Impact | I presented an invited lecture on polymer mechanochemistry and its place in the broader field of material science |
Year(s) Of Engagement Activity | 2017 |
Description | EPSRC Career development workshop |
Form Of Engagement Activity | Participation in an activity, workshop or similar |
Part Of Official Scheme? | No |
Geographic Reach | National |
Primary Audience | Professional Practitioners |
Results and Impact | I participated in the EPSRC-organized workshop for early career researchers |
Year(s) Of Engagement Activity | 2018 |
Description | Free University of Berlin |
Form Of Engagement Activity | A talk or presentation |
Part Of Official Scheme? | No |
Geographic Reach | National |
Primary Audience | Professional Practitioners |
Results and Impact | Disseminated results of our work to an audience of chemists |
Year(s) Of Engagement Activity | 2016 |
Description | Invited talk at the 2018 Spring American Physical Society meeting |
Form Of Engagement Activity | A talk or presentation |
Part Of Official Scheme? | No |
Geographic Reach | International |
Primary Audience | Professional Practitioners |
Results and Impact | I gave a broad overview of contemporary polymer mechanochemistry and a tutorial on the conceptual foundations of the field. |
Year(s) Of Engagement Activity | 2018 |
Description | Leibniz Inst. for Interaction Materials/RWTH Aachen U. |
Form Of Engagement Activity | A talk or presentation |
Part Of Official Scheme? | No |
Geographic Reach | International |
Primary Audience | Professional Practitioners |
Results and Impact | I presented an invited lecture on polymer mechanochemistry and its place in the broader field of material science |
Year(s) Of Engagement Activity | 2018 |
Description | MRS Spring meeting |
Form Of Engagement Activity | A talk or presentation |
Part Of Official Scheme? | No |
Geographic Reach | International |
Primary Audience | Professional Practitioners |
Results and Impact | we have alerted a group of experts (in materials engineering particularly in aerospace) that would not normally know about research in chemistry about a new framework of thinking about the problems they are interested in based on chemical and physicochemical approaches |
Year(s) Of Engagement Activity | 2016 |
Description | Najing University |
Form Of Engagement Activity | A talk or presentation |
Part Of Official Scheme? | No |
Geographic Reach | International |
Primary Audience | Professional Practitioners |
Results and Impact | I presented an invited lecture on polymer mechanochemistry and its place in the broader field of material science |
Year(s) Of Engagement Activity | 2017 |
Description | National Chiao Tung U., Taiwan |
Form Of Engagement Activity | A talk or presentation |
Part Of Official Scheme? | No |
Geographic Reach | International |
Primary Audience | Professional Practitioners |
Results and Impact | I presented an invited lecture on polymer mechanochemistry and its place in the broader field of material science |
Year(s) Of Engagement Activity | 2014 |
Description | National University of Taiwan |
Form Of Engagement Activity | A talk or presentation |
Part Of Official Scheme? | No |
Geographic Reach | International |
Primary Audience | Professional Practitioners |
Results and Impact | I presented an invited lecture on polymer mechanochemistry and its place in the broader field of material science |
Year(s) Of Engagement Activity | 2014 |
Description | Northwest University, China |
Form Of Engagement Activity | A talk or presentation |
Part Of Official Scheme? | No |
Geographic Reach | International |
Primary Audience | Policymakers/politicians |
Results and Impact | I presented an invited lecture on polymer mechanochemistry and its place in the broader field of material science |
Year(s) Of Engagement Activity | 2013 |
Description | Northwestern Polytechnical University, China |
Form Of Engagement Activity | Participation in an activity, workshop or similar |
Part Of Official Scheme? | No |
Geographic Reach | International |
Primary Audience | Postgraduate students |
Results and Impact | I gave a tutorial on polymer mechanochemistry to PhD students in chemistry, physicics, and polymer engineering |
Year(s) Of Engagement Activity | 2017 |
Description | Shhanxi Normal U |
Form Of Engagement Activity | A talk or presentation |
Part Of Official Scheme? | No |
Geographic Reach | International |
Primary Audience | Professional Practitioners |
Results and Impact | I presented an invited lecture on polymer mechanochemistry and its place in the broader field of material science |
Year(s) Of Engagement Activity | 2013 |
Description | Southwest University, China |
Form Of Engagement Activity | A talk or presentation |
Part Of Official Scheme? | No |
Geographic Reach | International |
Primary Audience | Postgraduate students |
Results and Impact | I presented a tutorial on polymer mechanochemistry and its place in the broader field of material science |
Year(s) Of Engagement Activity | 2013 |
Description | Stratingh Institute, U. of Groningen |
Form Of Engagement Activity | A talk or presentation |
Part Of Official Scheme? | No |
Geographic Reach | International |
Primary Audience | Professional Practitioners |
Results and Impact | Disseminated results of our approach to studying materials behavior |
Year(s) Of Engagement Activity | 2016 |
Description | Sun Yat-Sen University, China |
Form Of Engagement Activity | A talk or presentation |
Part Of Official Scheme? | No |
Geographic Reach | International |
Primary Audience | Professional Practitioners |
Results and Impact | I presented an invited lecture on polymer mechanochemistry and its place in the broader field of material science |
Year(s) Of Engagement Activity | 2017 |
Description | U. of Newcastle |
Form Of Engagement Activity | A talk or presentation |
Part Of Official Scheme? | No |
Geographic Reach | Local |
Primary Audience | Postgraduate students |
Results and Impact | A broad overview of contemporary mechanochemistry for PhD engineering students at Newcastle |
Year(s) Of Engagement Activity | 2016 |
Description | Wuhan U./Green Catalyst Int., China |
Form Of Engagement Activity | A talk or presentation |
Part Of Official Scheme? | No |
Geographic Reach | International |
Primary Audience | Postgraduate students |
Results and Impact | I presented an invited lecture on polymer mechanochemistry and its place in the broader field of material science |
Year(s) Of Engagement Activity | 2014 |
Description | Xiamen U., China |
Form Of Engagement Activity | A talk or presentation |
Part Of Official Scheme? | No |
Geographic Reach | International |
Primary Audience | Professional Practitioners |
Results and Impact | I presented an invited lecture on polymer mechanochemistry and its place in the broader field of material science |
Year(s) Of Engagement Activity | 2014 |
Description | Zhajian U., China |
Form Of Engagement Activity | A talk or presentation |
Part Of Official Scheme? | No |
Geographic Reach | International |
Primary Audience | Professional Practitioners |
Results and Impact | I presented an invited lecture on polymer mechanochemistry and its place in the broader field of material science |
Year(s) Of Engagement Activity | 2013 |
Description | invited lecture - University of Geneva |
Form Of Engagement Activity | A talk or presentation |
Part Of Official Scheme? | No |
Geographic Reach | Regional |
Primary Audience | Professional Practitioners |
Results and Impact | invited lecture - University of Geneva, Feb. 22, 2019 |
Year(s) Of Engagement Activity | 2019 |
Description | invited lecture at Nanyang Technological U. |
Form Of Engagement Activity | A talk or presentation |
Part Of Official Scheme? | No |
Geographic Reach | National |
Primary Audience | Professional Practitioners |
Results and Impact | invited talk at the ChemE department of NTU, Singapore, June 24, 2019 |
Year(s) Of Engagement Activity | 2019 |
Description | invited lecture, MRS - Asia |
Form Of Engagement Activity | A talk or presentation |
Part Of Official Scheme? | No |
Geographic Reach | International |
Primary Audience | Professional Practitioners |
Results and Impact | invited talk at a symposium on mechanoactive materials for biological applications at Materials Research Society - Asia |
Year(s) Of Engagement Activity | 2019 |
Description | invited talk: University of Science and Technology of China |
Form Of Engagement Activity | A talk or presentation |
Part Of Official Scheme? | No |
Geographic Reach | International |
Primary Audience | Professional Practitioners |
Results and Impact | I presented an invited lecture on polymer mechanochemistry and its place in the broader field of material science |
Year(s) Of Engagement Activity | 2017 |
Description | plenary lecture |
Form Of Engagement Activity | A talk or presentation |
Part Of Official Scheme? | No |
Geographic Reach | International |
Primary Audience | Professional Practitioners |
Results and Impact | plenary lecture at "Building and studying small" symposium, Brussels, 23-25 March, 2019 |
Year(s) Of Engagement Activity | 2019 |
Description | plenary lecture at a German Physical Society Spring meeting |
Form Of Engagement Activity | A talk or presentation |
Part Of Official Scheme? | No |
Geographic Reach | International |
Primary Audience | Professional Practitioners |
Results and Impact | Plenary lecture at a symposium at the spring 2019 meeting of the german physical society |
Year(s) Of Engagement Activity | 2019 |
Description | plenary lecture, 13th Photochemistry Conference, China |
Form Of Engagement Activity | A talk or presentation |
Part Of Official Scheme? | No |
Geographic Reach | International |
Primary Audience | Professional Practitioners |
Results and Impact | I presented a broad overview of the application of photochemical strategies for studying of polymer behavior in complex mechanical loading scenarios |
Year(s) Of Engagement Activity | 2013 |
Description | plenary talk, RAPS 2016 meeting and workshop |
Form Of Engagement Activity | A talk or presentation |
Part Of Official Scheme? | No |
Geographic Reach | National |
Primary Audience | Professional Practitioners |
Results and Impact | I gave a talk on starting a career and a new field of science at the same time to the audience of early career scientists from the UK |
Year(s) Of Engagement Activity | 2016 |
Description | visiting professor, THe chemistry research promotion center of Taiwan |
Form Of Engagement Activity | A talk or presentation |
Part Of Official Scheme? | Yes |
Geographic Reach | International |
Primary Audience | Professional Practitioners |
Results and Impact | established collaborative contacts increased awareness of the field of science among members of the research community of Taiwan |
Year(s) Of Engagement Activity | 2014 |