Donor–acceptor–donor triads incorporating tetrathiafulvalene and perylene diimide units: synthesis, electrochemical and spectroscopic studies
作者:Xuefeng Guo、Deqing Zhang、Huijuan Zhang、Qinghua Fan、Wei Xu、Xicheng Ai、Louzheng Fan、Daoben Zhu
DOI:10.1016/s0040-4020(03)00700-2
日期:2003.6
Three donor–acceptor–donor triads 1–3 consisting of tetrathiafulvalene units attached to perylene diimides by flexible and rigid spacers were synthesized and characterized. UV/vis spectroscopic and cyclic voltammetric results indicate that they all show negligible intramolecular charge transfer interaction in their ground states. As compared to the reference compound 21, triads 1–3 display reduced
三个供体-受体-供体三单元组1 - 3由通过柔性和刚性间隔件附着到苝二酰亚胺硫富瓦烯单元被合成和表征。紫外/可见光谱和循环伏安法结果表明,它们在其基态下均显示出可忽略的分子内电荷转移相互作用。相比于参考化合物21,三单元组1 - 3显示降低了荧光和它们的荧光寿命被缩短,这可能是由于PI单元和TTF单元之间的光诱导电子转移相互作用。1和2(以及3)之间的不同光物理行为)可能是由于它们在TTF和PI单位的空间分隔上的差异。初步发现,与TTF单元连接的基团的空间位阻会影响其光稳定性。