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Turning on Fluorescent Emission from C-Alkylation on Quinoxaline Derivatives
- Authors
- Son, Ho-Jin; Han, Won-Sik; Wee, Kyung-Ryang; Yoo, Dae-Hwan; Lee, Jong-Ho; Kwon, Soon-Nam; Ko, Jaejung; Kang, Sang Ook
- Issue Date
- 4-12월-2008
- Publisher
- AMER CHEMICAL SOC
- Citation
- ORGANIC LETTERS, v.10, no.23, pp.5401 - 5404
- Indexed
- SCIE
SCOPUS
- Journal Title
- ORGANIC LETTERS
- Volume
- 10
- Number
- 23
- Start Page
- 5401
- End Page
- 5404
- ISSN
- 1523-7060
- Abstract
- Reduction on imine moiety (C=N) of quinoxalines by alkyl-/aryllithiums led to a geometrical change on the quinoxaline ring, thereby perturbing the electronic structure to turn on fluorescence emission. Such a structural change resulted in interrupted cyclic-ring systems with electron-donating amine (Sp(3)-type) and electron-accepting imine (Sp(2)-type) units bridged by a phenylene unit. Through either alkylation or arylation, a highly polarized electron donor-electron acceptor bipolar system was established in a single molecule with dramatically enhanced PL efficiency (up to 60%).
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Collections - Graduate School > Department of Advanced Materials Chemistry > 1. Journal Articles
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