文献类型：期刊文献

英文题名：Fluorene oligomer with tetrathiafulvalenes as pendant groups: synthesis, electrochemical and spectroscopic properties

作者：Zhang, Xue-Chao[1,2];Zhang, Yu[1,2];Wang, Cheng-Yun[1,2];Lai, Guo-Qiao[3];Zhang, Lei[1,2];Shen, Yong-Jia[1,2]

机构：[1]E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China;[3]Hangzhou Normal Univ, Key Lab Organosilicon Chem & Mat Technol, Minist Educ, Hangzhou 310012, Zhejiang, Peoples R China

年份：2009

卷号：63

期号：6

起止页码：815

外文期刊名：POLYMER BULLETIN

收录：;EI(收录号：20095212577040);WOS:【SCI-EXPANDED(收录号:WOS:000272122000004)】；

语种：英文

外文关键词：Fluorene; TTF; Charge transfer; Conducting materials; Fluorescence switch

摘要：An oligomeric fluorene with pendant TTF units (OFT) was synthesized by the Yamamoto coupling reaction using Ni(COD)(2) as catalyst. The fluorescence spectra of fluorene-TTF (3a) and OFT displayed weak fluorescence intensity because of the photoinduced electron transfer (PET) interaction and energy transfer between the TTF and fluorene, while the fluorescence intensity would enhance significantly after chemical oxidation. The absorption spectra and cyclic voltammetry (CV) showed that an intramolecular interaction existed between the TTF and fluorene moieties in OFT, while in 3a such interaction could not be observed, due to the chain propagation of the fluorene backbone and an enhanced internal charge transfer interaction between the two electroactive moieties. Moreover, the conductivity showed that the doped OFT possessed a higher conductivity (1.4 x 10(-3) S cm(-1)) than the doped 3a (9.8 x 10(-5) S cm(-1)). These results demonstrated that OFT was a good candidate of fluorescence switches and conducting materials.