Imperial College London


Faculty of Natural SciencesDepartment of Chemistry

Professor of Organic Materials



+44 (0)20 7594 1248m.heeney Website




401GMolecular Sciences Research HubWhite City Campus






BibTex format

author = {Musser, AJ and Al-Hashimi, M and Heeney, M and Clark, J},
doi = {10.1063/1.5110269},
journal = {Journal of Chemical Physics},
title = {Heavy-atom effects on intramolecular singlet fission in a conjugated polymer},
url = {},
volume = {151},
year = {2019}

RIS format (EndNote, RefMan)

AB - A chief aim in singlet fission research is to develop new materials concepts for more efficient singlet fission. The typical approaches such as tuning π-overlap and charge-transfer interactions, enhancing delocalization, altering diradical character, or extending the conjugation length have profound effects simultaneously on the singlet and triplet energetics and the couplings between them. While these strategies have resulted in a handful of high-efficiency materials, the complex interplay of these factors makes systematic materials development challenging, and it would be useful to be able to selectively manipulate the properties and dynamics of just part of the singlet fission pathway. Here, we investigate the potential of heteroatom substitution as just such a selective tool. We explore the influence of heavy atoms within the main backbone of polythienylenevinylene and its selenophene and tellurophene derivatives. We find no significant effects on the prompt <300 fs intramolecular singlet fission dynamics but a clear heavy-atom effect on longer time scales.
AU - Musser,AJ
AU - Al-Hashimi,M
AU - Heeney,M
AU - Clark,J
DO - 10.1063/1.5110269
PY - 2019///
SN - 0021-9606
TI - Heavy-atom effects on intramolecular singlet fission in a conjugated polymer
T2 - Journal of Chemical Physics
UR -
UR -
UR -
VL - 151
ER -