CAJ | 학술논문

通过7-二乙氨基香豆素-3-醛和碘化3-乙基-2-甲基苯并噻唑盐的缩合反应，合成了一种具有比较宽的斯托克斯位移的荧光性硫代半菁染料．UV-vis分光光度法、荧光分光光度法和核磁滴定等研究表明：在含水体系中，硫代半菁染料以吸收蓝移和发射比率荧光变化双重传感高选择性识别氰离子，这是由于氰离子对硫代半菁染料的亲核加成导致分子内电荷转移（ICT）过程被破坏而造成的．
통과7-이을안기향두소-3-철화전화3-을기-2-갑기분병새서염적축합반응，합성료일충구유비교관적사탁극사위이적형광성류대반정염료．UV-vis분광광도법、형광분광광도법화핵자적정등연구표명：재함수체계중，류대반정염료이흡수람이화발사비솔형광변화쌍중전감고선택성식별청리자，저시유우청리자대류대반정염료적친핵가성도치분자내전하전이（ICT）과정피파배이조성적．
A fluorescent thiohemicyanine with a wide stokes shift has been prepared through a condensation reaction of 7-diethylaminocoumarin-3-carbaldehyde and 3-ethyl-2-methylbenzothiazol 3-ium iodide. The study of UV-vis spectrophotometry, fluorescence spectrophotometry and nuclear magnetic titration indicates that the thiohemicyanine displays high selectivity for cyanide over other anions by dual changes in both absorption (blue-shift) and emission (ratiometric fluorescent) bands in aqueous media. These changes are mainly due to blocking of the ICT process arising from a nucleophillic addition of cyanide anion to the thiohemicyanine.