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。
New alternating copolymers of fluorene and triphenylamine bearing terthiophene and acceptor groups in the side chains: Synthesis and photovoltaic properties
A series of conjugated copolymers (P1 and P2-CN–P4-CN) were prepared, in which two kinds of side chains were designed: one was the repeating units similar to that of P3HT, with the aim to increase the compatible with PC61BM and the hole mobility; another one was the acceptor groups connected with the electron-rich backbone through the conjugated 3,4-ethylenedioxythiophene bridge, in order to broaden