期刊
ORGANIC LETTERS
卷 12, 期 12, 页码 2876-2879出版社
AMER CHEMICAL SOC
DOI: 10.1021/ol100999j
关键词
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资金
- NSFC [20634040, 20972024]
- MOE [SRFDP-200801410004, NCET-08-0077]
- State Key Laboratory of Fine Chemicals [KF0802]
- PCSIRT [IRT0711]
- State Key Laboratory of Chemo/Biosensing and Chemometrics [2008009]
- Education Department of Liaoning Province [2009T015]
- DUT [SFDUT07005/1000-893394]
- Royal Society (UK)
- NSFC (China)
An OFF-ON red-emitting phosphorescent thiol probe is designed by using the (MLCT)-M-3 photophysics of Ru(II) complexes, i.e., with Ru(II) as the electron donor. The probe is non-luminescent because the MLCT is corrupted by electron transfer from Ru(II) to an intramolecular electron sink (2,4-dinitrobenzenesulfonyl). Thiols cleave the electron sink, and the MLCT is re-established. Phosphorescence at 598 nm was enhanced by 90-fold, with a 143 nm (5256 cm(-1)) Stokes shift and a 1.1 mu s luminescent lifetime.
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