Dicyanostilbene-based two-photon thermo-solvatochromic fluorescence probes with large two-photon absorption cross sections: Detection of solvent polarities, viscosities, and temperature

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• 作者：Chibao Huang^a ; ^bAuthor Vitae ; Xiao Peng^aAuthor Vitae ; Daosheng Yi^bAuthor Vitae ; Junle Qu^a ; ^{jlqu70@gmail.com}Author Vitae ; Hanben Niu^aAuthor Vitae
• 关键词：Two-photon fluorescence solvatochromic sensor ; Stilbene derivatives ; Polarity ; Viscosity ; Temperature
• 刊名：Sensors and Actuators B: Chemical
• 出版年：2013
• 出版时间：June, 2013
• 年：2013
• 卷：182
• 期：Complete
• 页码：521-529
• 全文大小：975 K

文摘

The unusually sensitive solvatochromic probes (g class=""boldFont"">P1g> and g class=""boldFont"">P2)g> derived from 4-methyl-2,5-dicyano-4¡ä-amino stilbene (g class=""boldFont"">DCSg>) whose emission maxima and two-photon absorption cross sections (¦Ä) vary from 445 and 452 nm, and 5560 and 6670 GM in cyclohexane to 641 and 604 nm, and 980 and 2040 GM in DMSO, respectively are described. g class=""boldFont"">P1g> and g class=""boldFont"">P2g> exhibit very strong polarity-, viscosity-, and temperature-dependence of fluorescence, and can be used to detect polarities, viscosities, and temperature. g class=""boldFont"">P1g> and g class=""boldFont"">P2g> possess small molecule-size, wide solvatochromism (445-641 nm, 452-641 nm), large ¦Ä (980-5560 GM, 2040-6670 GM), and high fluorescence quantum yields, and are ideal two-photon fluorescence solvatochromic probes.