Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 133, Issue 1, Pages 113-117Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2008.02.010
Keywords
two-photon fluorescent sensor; azathiacrown ether; binding constant; selectivity; sensitivity
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A two-photon sensor for the silver ion derived from 3,9-dithia-6-azaundecane as the receptor is reported. The sensor exhibits high sensitivity to and selectivity for silver ion, and emits strong two-photon fluorescence when excited by 8 10 nm laser photons. Moreover, the binding constants measured by the one- and two-photon fluorescence are similar. This result may be useful for the design of efficient two-photon fluorescence probes for biological substrates. (C) 2008 Elsevier B.V. All rights reserved.
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