Non-ambient Studies on Opto-electronic Materials
Lead Research Organisation:
University of Bath
Department Name: Chemistry
Abstract
With the advent of synchrotron radiation sources it is possible to undertake new types of experiment to probe the molecular structures of materials that have not been possible previously. The new UK synchrotron, diamond, is now coming into operation and new instrumentation to study the structure of materials will be operational in 2008. In this research we wish to take advantage of the new opportunities that the high intensity radiation that the synchrotron gives us and study the properties of two classes of opto-electronic materials that have applications in the sensor and materials industry. We also provide a student with high quality training in the use of diffraction facilities at diamond. The first class of opto-electronic materials are new organometallic polymers that change their structure and electronic properties when put under pressure or when irradiated with light so that they can be used as sensors. We wish to explore their chemistry and properties so that we can tune them to behave in a particular way and by studying their structures under ambient conditions, under pressure and under irradiation with light with synchrotron radiation will help us to achieve this goal.The second class of opto-electronic materials are generated in the solid state when monomer molecules link up under photoactivation to form dimers or polymers. We wish to explore whether the same linking process, a [2+2] cycloaddition reaction, occurs when the monomers are placed under high pressure. We also wish to prepare new organometallic complexes capable of undergoing cycloaddition reactions in the solid state and investigate how these material behave when photoactivated or placed under pressure. Again, synchrotron radiation will be used to probe the structures of these materials as they react.The information gained from laboratory and synchrotron-based experiments on both classes of materials will help us to build structure/property correlations for these systems and will lead to the design of more efficient intelligent materials.
People |
ORCID iD |
Paul Robert Raithby (Principal Investigator) |
Publications
Hatcher L
(2014)
Thermal and photochemical control of nitro-nitrito linkage isomerism in single-crystals of [Ni(medpt)(NO 2 )(? 2 -ONO)]
in CrystEngComm
Hatcher LE
(2014)
Steady-state and pseudo-steady-state photocrystallographic studies on linkage isomers of [Ni(Et4dien)(?2-O,ON)(?1-NO2)]: identification of a new linkage isomer.
in Chemistry (Weinheim an der Bergstrasse, Germany)
Khan MS
(2011)
Synthesis and characterization of platinum(II) di-ynes and poly-ynes incorporating ethylenedioxythiophene (EDOT) spacers in the backbone.
in Dalton transactions (Cambridge, England : 2003)
Shah HH
(2013)
New multi-ferrocenyl- and multi-ferricenyl- materials via coordination-driven self-assembly and via charge-driven electro-crystallization.
in Inorganic chemistry
Shah HH
(2014)
New di-ferrocenyl-ethynylpyridinyl triphenylphosphine copper halide complexes and related di-ferricenyl electro-crystallized materials.
in Dalton transactions (Cambridge, England : 2003)
Woodall C
(2014)
High-pressure crystallographic and spectroscopic studies on two molecular dithienylethene switches
in CrystEngComm
Woodall CH
(2013)
Hingeless negative linear compression in the mechanochromic gold complex [(C6F5Au)2(µ-1,4-diisocyanobenzene)].
in Angewandte Chemie (International ed. in English)
Woodall CH
(2014)
Tunable trimers: using temperature and pressure to control luminescent emission in gold(I) pyrazolate-based trimers.
in Chemistry (Weinheim an der Bergstrasse, Germany)
Description | We have developed a new class of mixed early/late transition metal oligomers and polymers for use in molecular electronics. Through a novel synthetic strategy we have combined late transition metal diynes with early transition metal carboxylate materials. We have studied their electronic properties using time-resolved spectroscopic and diffraction methods at the Diamond synchrotron and the Central Laser Facility. Additionally, we have discovered a number of solid-state phase transitions which have informed the design of new functional materials. |
Exploitation Route | These materials are electronically interesting and may prove to be of interest to the electronics industry. |
Sectors | Electronics,Energy |
Description | EPSRC |
Amount | £1,491,903 (GBP) |
Funding ID | EP/I01974X/1 |
Organisation | Engineering and Physical Sciences Research Council (EPSRC) |
Sector | Public |
Country | United Kingdom |
Start | 09/2011 |
End | 09/2016 |
Description | Programme Grant |
Amount | £3,240,870 (GBP) |
Funding ID | EP/K004956/1 |
Organisation | Engineering and Physical Sciences Research Council (EPSRC) |
Sector | Public |
Country | United Kingdom |
Start | 11/2012 |
End | 10/2017 |
Title | Development of non-ambient crystallographic methods for high pressure studies |
Description | During this project we have helped to design and implement gas cells and high pressure cells on Beamline I19 at the Diamond Light Source to study transformations of a range of materials under moderate to high pressure. |
Type Of Material | Improvements to research infrastructure |
Year Produced | 2013 |
Provided To Others? | Yes |
Impact | The new cells are now in regular use on Beamline I19 for the whole user community. |
Title | Methods for determining the structures of materials that are metastable or have short lifetimes in the solid state using photocrystallographic methods |
Description | We have developed single-crystal X-ray crystallographic methods for determining the structures of metastable materials using photocrystallographic methods. These methods have been adopted by other groups and photocrystallography is now a growing topic. |
Type Of Material | Improvements to research infrastructure |
Year Produced | 2010 |
Provided To Others? | Yes |
Impact | We have established the structures of a range of coordination complexes that show linkage isomerism under photoactivation. The use of LEDs to photoactivate the materials is now in teh public domain and the methodology has been adopted by a number of research groups. |
Title | Time resolved spectroscopic methods |
Description | During this project we have developed time-resolved IR methods for studying the dynamics of inorganic and metallo-organic materials in the solid state. |
Type Of Material | Improvements to research infrastructure |
Year Produced | 2014 |
Provided To Others? | Yes |
Impact | These methods are now available to other users of the Central Laser facility |