Fluorescent and Colorimetric Probes for Mercury(II): Tunable Structures of Electron Donor and π-Conjugated Bridge
作者:Xiaohong Cheng、Shuang Li、Huizhen Jia、Aoshu Zhong、Cheng Zhong、Jun Feng、Jingui Qin、Zhen Li
DOI:10.1002/chem.201102376
日期:2012.2.6
1, 2, and 3) were synthesized by attaching various electron‐donating thiophenes groups to a triphenylamine backbone with an aldehyde group as the electron acceptor. Based on the protection reaction between ethanethiol and aldehyde, the corresponding dithioacetals (compounds S1, S2, and S3) were prepared to serve as novel colorimetric and fluorescent chemosensors for Hg2+ ions. Also, compound S1 was
一系列新的分子内电荷转移(ICT)分子(化合物1,2,和3)通过各种供电子基团的噻吩附连到三苯胺骨架与醛基作为电子受体进行合成。基于乙硫醇与醛之间的保护反应,制备了相应的二硫缩醛(化合物S1,S2和S3),用作Hg 2+离子的新型比色和荧光化学传感器。此外,化合物S1还用于构建针对Hg 2+的基于化学反应的共轭聚合物探针(PS1)离子。在低至10 n M Hg 2+的存在下,化合物PS1的荧光强度出现明显变化。依赖于时间的DFT计算证实了传感过程是由ICT介导的。此外,化合物S1已成功应用于比例成像荧光法检测HeLa细胞中Hg 2+的显微成像。