Charge transfer states impact the triplet pair dynamics of singlet fission polymers

He, Guiying; Busby, Erik; Appavoo, Kannatassen; Wu, Qin; Xia, Jianlong; Campos, Luis M.; Sfeir, Matthew Y.

doi:10.1063/5.0029858

Charge transfer states impact the triplet pair dynamics of singlet fission polymers

Journal Article · Mon Dec 21 23:00:00 EST 2020 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/5.0029858· OSTI ID:1764590

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City Univ. of New York, NY (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
Brookhaven National Lab. (BNL), Upton, NY (United States); Columbia Univ., New York, NY (United States)
Brookhaven National Lab. (BNL), Upton, NY (United States); Univ. of Alabama, Birmingham, AL (United States)
Brookhaven National Lab. (BNL), Upton, NY (United States)
Wuhan Univ. of Technology (China)
Columbia Univ., New York, NY (United States)

Polymers are desirable optoelectronic materials, stemming from their solution processability, tunable electronic properties, and large absorption coefficients. An exciting development is the recent discovery that singlet fission (SF), the conversion of a singlet exciton to a pair of triplet states, can occur along the backbone of an individual conjugated polymer chain. Here, compared to other intramolecular SF compounds, the nature of the triplet pair state in SF polymers remains poorly understood, hampering the development of new materials with optimized excited state dynamics.

View Accepted Manuscript (DOE)

Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation

Grant/Contract Number:: SC0012704

OSTI ID:: 1764590

Report Number(s):: BNL--220980-2021-JAAM

Journal Information:: Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 24 Vol. 153; ISSN 0021-9606

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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77 NANOSCIENCE AND NANOTECHNOLOGY
Charge transfer
Dark states
Emission spectroscopy
Excitons
Fluorescence
Optical absorption
Polarizability
Solvent effect
Triplet state
Ultrafast processes

Charge transfer states impact the triplet pair dynamics of singlet fission polymers

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