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Yusuf Hamied Department of Chemistry

 

Professor of Functional Materials

Biography

I was born in Buenos Aires, Argentina in 1980 but grew up in London, UK. I studied Chemistry at Oxford, before going on to do a PhD at Imperial College with Prof. Charlotte Williams. I then spent a year at the University of Washington in Seattle working as a postdoc for Prof. Christine Luscombe. After this I returned to Imperial College to do a second postdoc with Prof. Iain McCulloch. I was awarded am Imperial College Junior Research Fellowship in 2012 before being appointed as a lecturer at University College London in 2013. In 2015 I was awarded an ERC starting grant and then in 2017 I was appointed as a lecturer joint between the physics and chemistry departments at the University of Cambridge. I was awarded an EPSRC fellowship in 2019 and then promoted to Professor (Grade 12) in 2022.

Research

Research in my group involves the synthesis of novel conjugated materials for use in organic solar cells, light emitting diodes and transistors. We are particularly interested in synthesizing materials that help understand and utilise triplet and other unusual excited states (eg. singlet fission, upconversion, reverse intersystem crossing) due to their unique and fascinating properties. The virtually infinite tunability of conjugated polymers means that they can be applied to an immense number of applications. My research group is currently made up of 6 PDRAs and 4 PhD students. We also have MSc students join the group every year. We work very closely with other research groups particularly in Physics resulting a mix of disciplines, people and ideas.

Traditionally, much of the development of novel materials has come from a “top-down” approach where a particular research group focuses on one/several types of application. My aim as a scientist is to begin the research process from the “bottom up”. I believe that by developing a true understanding of the fundamental properties of conjugated materials, simultaneous advancement across all areas of conjugated polymer research and its relevant applications.

There are a few key properties of conjugated polymers which are important across ALL applications, which if they could be controlled would offer rapid advances across all fields of research. For instance, it could be argued that in applications where there is interaction of light and matter, the three most important of these properties are: excited state energy, lifetime and diffusion length. My aim is to synthesize novel systems which allow us to firstly measure, and then control these basic properties which are still not understood.

By developing a true understanding of how structure (both primary chemical, and secondary morphological) affects the fundamental properties it will be possible to make rapid advances across all fields. In particular, using this approach I believe it is possible to make great advances in areas which I believe represent some key challenges for modern science (eg clean energy generation and storage)

Find out more about Professor Bronstein's research

Publications

Photocurrent Enhancement from Diketopyrrolopyrrole Polymer Solar Cells through Alkyl-Chain Branching Point Manipulation
I Meager, RS Ashraf, S Mollinger, BC Schroeder, H Bronstein, D Beatrup, MS Vezie, T Kirchartz, A Salleo, J Nelson, I McCulloch
– JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2013)
135,
11537
On the energetic dependence of charge separation in low-band-gap polymer/fullerene blends.
SD Dimitrov, AA Bakulin, CB Nielsen, BC Schroeder, J Du, H Bronstein, I McCulloch, RH Friend, JR Durrant
– J Am Chem Soc
(2012)
134,
18189
Electronic structure tuning of new fused thieno[3,2-b]thieno bisthiophene based polymers via alkyl chain and Group IV heteroatom modulation
BC Schroeder, H Bronstein, RS Ashraf, W Zhang, Z Huang, PS Tuladhar, TD Anthopoulos, JR Durrant, I McCulloch
– Proceedings of SPIE--the International Society for Optical Engineering
(2012)
8477,
847709-847709-5
Constructing Regioregular Star Poly(3-hexylthiophene) via Externally Initiated Kumada Catalyst-Transfer Polycondensation.
M Yuan, K Okamoto, HA Bronstein, CK Luscombe
– ACS Macro Lett
(2012)
1,
392
Design of semiconducting indacenodithiophene polymers for high performance transistors and solar cells.
I McCulloch, RS Ashraf, L Biniek, H Bronstein, C Combe, JE Donaghey, DI James, CB Nielsen, BC Schroeder, W Zhang
– Accounts of chemical research
(2012)
45,
714
A systematic approach to the design optimization of light-absorbing indenofluorene polymers for organic photovoltaics
J Kirkpatrick, CB Nielsen, W Zhang, H Bronstein, RS Ashraf, M Heeney, I McCulloch
– Advanced Energy Materials
(2012)
2,
260
Synthesis of a Novel Fused Thiophene‐thieno[3,2‐b]thiophene‐thiophene Donor Monomer and Co‐polymer for Use in OPV and OFETs
H Bronstein, RS Ashraf, Y Kim, AJP White, T Anthopoulos, K Song, D James, W Zhang, I McCulloch
– Macromolecular rapid communications
(2011)
32,
1664
Indacenodithiophene-co-benzothiadiazole copolymers for high performance solar cells or transistors via alkyl chain optimization
H Bronstein, DS Leem, R Hamilton, P Woebkenberg, S King, W Zhang, RS Ashraf, M Heeney, TD Anthopoulos, JD Mello, I McCulloch
– Macromolecules
(2011)
44,
6649
Thieno[3,2-b]thiophene-diketopyrrolopyrrole-containing polymers for high-performance organic field-effect transistors and organic photovoltaic devices.
H Bronstein, Z Chen, RS Ashraf, W Zhang, J Du, JR Durrant, PS Tuladhar, K Song, SE Watkins, Y Geerts, MM Wienk, RAJ Janssen, T Anthopoulos, H Sirringhaus, M Heeney, I McCulloch
– Journal of the American Chemical Society
(2011)
133,
3272
Thieno[3,2- b]thiophene-diketopyrrolopyrrole-containing polymers for high-performance organic field-effect transistors and organic photovoltaic devices
H Bronstein, Z Chen, RS Ashraf, W Zhang, J Du, JR Durrant, P Shakya Tuladhar, K Song, SE Watkins, Y Geerts, MM Wienk, RAJ Janssen, T Anthopoulos, H Sirringhaus, M Heeney, I McCulloch
– Journal of the American Chemical Society
(2011)
133,
3272
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Telephone number

01223 336697

Email address

hab60@cam.ac.uk