Synthesis, physical properties and self-assembly of conjugated donor–acceptor system based on tetrathiafulvalene and functionalized with binding sites
作者:Chunyang Jia、Jiaqiang Zhang、Jingying Bai、Ligong Zhang、Zhongquan Wan、Xiaojun Yao
DOI:10.1016/j.dyepig.2012.02.008
日期:2012.9
A novel π-conjugated donor–acceptor compound (1) based on tetrathiafulvalene (TTF), which is functionalized with dipyridine, has been designed and synthesized. Spectroscopic and electrochemical behaviors of compound 1 demonstrate that the donor (TTF) unit strongly interacts with the electron-accepting group through the heteroaromatic bridge. The interaction of compound 1 with metallic ions can cause
A Novel Conjugated Donor-Acceptor System Based on Tetrathiafulvalene Merging Pyrene Unit: Synthesis, Physical Properties and Theoretical Calculations
作者:Chunyang Jia、Jiaqiang Zhang、Ligong Zhang、Xiaojun Yao
DOI:10.3987/com-11-12177
日期:——
A novel conjugated donor-acceptor compound (1) based on tetrathiafulvalene has been synthesized and fully characterized. Intramolecular charge transfer (ICT) in compound 1, arising from HOMO-LUMO singlet transitions, has been experimentally evidenced through absorption/fluorescence spectra and theoretical calculations.
Highly conjugated donor–acceptor dyad based on tetrathiafulvalene covalently attached to porphyrin unit
作者:Zhongquan Wan、Chunyang Jia、Jiaqiang Zhang、Xiaojun Yao、Yu Shi
DOI:10.1016/j.dyepig.2011.10.011
日期:2012.4
A novel and highly conjugated donor-acceptor dyad consisting of tetrathiafulvalene unit covalently attached to a porphyrin unit has been synthesized and characterized. As compared to tetraphenylporphyrin, the fluorescence intensity and lifetime of the dyad was decreased owing to photoinduced electron transfer between the tetrathiafulvalene and porphyrin units in the excited state. The fluorescence intensity of the dyad was recovered dramatically upon the addition of Fe(ClO4)(3)center dot 6H(2)O to a solution of the dyad, and the fluorescence intensity grows with an increasing amount of Fe(ClO4)(3)center dot 6H(2)O. More importantly, the fluorescence intensity of the dyad can be reversibly modulated by the sequential electrochemical oxidation and reduction of the tetrathiafulvalene unit, thus a new redox fluorescence switch based on this dyad has been constructed. (C) 2011 Elsevier Ltd. All rights reserved.