Achieving Long-Lived Triplet States in Intramolecular SF Films through Molecular Engineering
Abstract
Tuning singlet fission (SF) dynamics in the solid states in a controllable way is vitally important yet still a challenge due to the electronic coupling, which is highly sensitive to molecular packing. Here, we demonstrate a molecular engineering approach to independently optimize the triplet generation and decay process in intramolecular SF films by using terphenyl-bridged TIPS-pentacene tetramers. By controlling the degree of steric hindrance within individual tetramers, we can systematically tune the degree of intermolecular coupling in thin films. Taking advantage of both the intra- and intermolecular SF processes allows us to maintain a rapid triplet pair generation process, even in the case of weak intermolecular coupling. This approach allows us to maintain a picosecond triplet generation process while simultaneously varying the rate constants for triplet-triplet annihilation over three orders of magnitude.
- Authors:
-
- Wuhan Univ., Wuhan (China); City Univ. (CUNY), NY (United States)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Publication Date:
- Research Org.:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1543399
- Report Number(s):
- BNL-211849-2019-JAAM
Journal ID: ISSN 2451-9294
- Grant/Contract Number:
- SC0012704
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Chem
- Additional Journal Information:
- Journal Volume: 5; Journal Issue: 9; Journal ID: ISSN 2451-9294
- Publisher:
- Cell Press, Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 77 NANOSCIENCE AND NANOTECHNOLOGY
Citation Formats
Huang, Huaxi, He, Guiying, Xu, Ke, Wu, Qin, Wu, Di, Sfeir, Matthew Y., and Xia, Jianlong. Achieving Long-Lived Triplet States in Intramolecular SF Films through Molecular Engineering. United States: N. p., 2019.
Web. doi:10.1016/j.chempr.2019.06.007.
Huang, Huaxi, He, Guiying, Xu, Ke, Wu, Qin, Wu, Di, Sfeir, Matthew Y., & Xia, Jianlong. Achieving Long-Lived Triplet States in Intramolecular SF Films through Molecular Engineering. United States. https://doi.org/10.1016/j.chempr.2019.06.007
Huang, Huaxi, He, Guiying, Xu, Ke, Wu, Qin, Wu, Di, Sfeir, Matthew Y., and Xia, Jianlong. Wed .
"Achieving Long-Lived Triplet States in Intramolecular SF Films through Molecular Engineering". United States. https://doi.org/10.1016/j.chempr.2019.06.007. https://www.osti.gov/servlets/purl/1543399.
@article{osti_1543399,
title = {Achieving Long-Lived Triplet States in Intramolecular SF Films through Molecular Engineering},
author = {Huang, Huaxi and He, Guiying and Xu, Ke and Wu, Qin and Wu, Di and Sfeir, Matthew Y. and Xia, Jianlong},
abstractNote = {Tuning singlet fission (SF) dynamics in the solid states in a controllable way is vitally important yet still a challenge due to the electronic coupling, which is highly sensitive to molecular packing. Here, we demonstrate a molecular engineering approach to independently optimize the triplet generation and decay process in intramolecular SF films by using terphenyl-bridged TIPS-pentacene tetramers. By controlling the degree of steric hindrance within individual tetramers, we can systematically tune the degree of intermolecular coupling in thin films. Taking advantage of both the intra- and intermolecular SF processes allows us to maintain a rapid triplet pair generation process, even in the case of weak intermolecular coupling. This approach allows us to maintain a picosecond triplet generation process while simultaneously varying the rate constants for triplet-triplet annihilation over three orders of magnitude.},
doi = {10.1016/j.chempr.2019.06.007},
journal = {Chem},
number = 9,
volume = 5,
place = {United States},
year = {Wed Jul 03 00:00:00 EDT 2019},
month = {Wed Jul 03 00:00:00 EDT 2019}
}
Web of Science
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