skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: 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:
 [1];  [1];  [1]; ORCiD logo [2];  [1];  [1];  [1]
  1. Wuhan Univ., Wuhan (China); City Univ. (CUNY), NY (United States)
  2. 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:
Journal Article: 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},
url = {https://www.osti.gov/biblio/1543399}, journal = {Chem},
issn = {2451-9294},
number = 9,
volume = 5,
place = {United States},
year = {2019},
month = {7}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 5 works
Citation information provided by
Web of Science

Save / Share: