Design of an efficient charge-transfer processing molecular system containing a weak electron donor: spectroscopic and redox properties and cation-induced fluorescence enhancement
Design of an efficient charge-transfer processing molecular system containing a weak electron donor: spectroscopic and redox properties and cation-induced fluorescence enhancement
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DOI：
10.1016/s0009-2614(00)01058-7
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发表时间：
2000-10-27
影响因子：
2.8
通讯作者：
Daub, J
中科院分区：
文献类型：
--
作者：
Kollmannsberger, M;Rurack, K;Daub, J
The acceptor strength of the boron-dipyrromethene chromophore in directly linked donor-acceptor compounds can be tuned by substituents in such a way that a fast excited state charge transfer takes place even for the comparatively weak benzo crown electron donor. This leads to strong fluorescence quenching. Upon binding of cations (Na+ and K+) to the benzo crown receptor, the donor properties of the latter are further reduced, partly suppressing charge transfer. Large fluorescence enhancement factors and cation-selective fluorescence decay times result which are the basis for improved analytical application of these dyes as highly sensitive fluorescent probes. (C) 2000 Elsevier Science B.V. All rights reserved.
