A novel colorimetric and fluorescent sensor for cyanide anions detection based on triphenylamine and benzothiadiazole
作者:Qisong Zhang、Jian Zhang、Hujin Zuo、Chengyun Wang、Yongjia Shen
DOI:10.1016/j.tet.2016.01.019
日期:2016.3
dicyanovinyl moiety. The obstruction in the intramolecular charge transfer (ICT) induced remarkable changes in the absorption and emission spectra. The sensor exhibited splendid selectivity and anti-interference performance towards CN− over other anions (F−, Cl−, Br−, I−, NO2−, NO3−, HCO3−, H2PO4−, HS−, HSO3−, NCO−, SCN−, SO32−, SO42−, HPO42−, CO32−). The mechanism was investigated by absorption and emission
设计合成了一种三苯胺和苯并噻二唑类氰化物阴离子检测化学传感器,其结构特征为供体-受体-供体(DAD)分子构型,被二氰基乙烯基取代为感测单元。根据迈克尔加成原理,将氰化物离子亲核加成到二氰基乙烯基基团上,这打破了二氰基乙烯基基团的吸电子相互作用。分子内电荷转移(ICT)的阻塞引起吸收光谱和发射光谱的显着变化。该传感器表现出出色的选择性和抗-interference性能朝向CN -超过其它阴离子(F - ,氯- ,溴-我-,NO 2 -,NO 3 -,HCO 3 -,H 2 PO 4 -,HS -,HSO 3 -,NCO -,SCN -,SO 3 2-,SO 4 2-,HPO 4 2-, CO 3 2-)。通过吸收和发射光谱以及1 H NMR滴定研究了该机理。