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Abstract
Dicyanostilbene-based Two-photon Thermo-solvatochromic Fluorescence Probes with Two-photon Triple Fluorescence
Chibao H* and Junle Q
The unusually sensitive solvatochromism of the two-photon fluorescence fluorophore of 2,5-dicyano-4-methyl-4’-dimethylaminostilbene (P1) whose emission maximum varies from 445 nm in cyclohexane to 641 nm in DMSO are described. P1 with remarkably large two-photon cross sections exhibits very strong polarity-, viscosity-, and temperature-dependence of fluorescence, and can be used to detect polarities, viscosities, and temperature. P1 presents a two-photon triple fluorescence.
