期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 151, 期 1, 页码 236-242出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2010.09.013
关键词
Silver ion; Fluorophore; Two-photon absorption cross section; Sensor; Twin-cyano-stilbene
资金
- National Natural Science Foundation of China [20772102, 20972131]
- China Postdoctoral Science Foundation [20100471224]
A two-photon sensor for silver ion derived from twin-cyano-stilbene as the fluorophore is reported. The sensor exhibits remarkably large two-photon absorption cross sections (delta(TPA)) whose value is as high as 950 GM in MeCN, high sensitivity to and selectivity for silver ion, and emits strong two-photon fluorescence when excited by 790 rim laser photons. The sensor can be used to detect trace Ag+, and its binding constant (log K) for Ag+ is as high as 5.76 +/- 0.05. The successful applications of the sensor provide a brilliant prototype for the development of ideal two-photon fluorescence probes. (C) 2010 Elsevier B.V. All rights reserved.
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