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- Title
White light emission from an upconverted emission based on triplet-triplet annihilation with rose bengal as the sensitizer.
- Authors
Chen, Hung-Cheng; Hung, Chen-Yen; Lin, Chih-Wei; Wang, Kuan-Hsiang; Lee, Mandy M.; Chen, Peilin; Chow, Tashin J.; Hsu, Chao-Ping; Sun, Shih-Sheng
- Abstract
In this work, we report an energy upconversion system based on triplet-triplet annihilation comprised of rose bengal dye as the sensitizer and a highly fluorescent 9-(triphenyl)ethynyl-10-phenylanthracene (TPE-PAn) as the triplet annihilator. The energy upconversion can be observed with a low-power laser excitation at 532 nm or noncoherent Xe arc lamp excitaion at 540 nm. A delayed fluorescence from (TPE-PAn) at 418 nm was observed with an energy upconversion up to 0.64 eV and quantum yield of 0.8 %. A white-light emission was achieved as a result of combination of delayed fluorescence from TPE-PAn and residual fluorescence from rose bengal dye.
- Subjects
ROSE bengal; DELAYED fluorescence; PHOTON upconversion
- Publication
Pure & Applied Chemistry, 2023, Vol 95, Issue 4, p413
- ISSN
0033-4545
- Publication type
Article
- DOI
10.1515/pac-2023-0210