Planar β-Linked Oligothiophenes Based on Thieno[3,2-<i>b</i>]thiophene and Dithieno[3,2-<i>b</i>:2‘,3‘-<i>d</i>]thiophene Fused Units
作者:Lidaris San Miguel、William W. Porter、Adam J. Matzger
DOI:10.1021/ol0630393
日期:2007.3.1
oligothiophenes based on thieno[3,2-b]thiophene and dithieno[3,2-b:2',3'-d]thiophene fused units were synthesized. The optical data indicate a blue shift of the absorption maximum in comparison to the alpha-linked analogues due to cross-conjugation between fused rings. The crystal structures of 3,3'-bi(thieno[3,2-b]thiophene) and 3,3';6',3"-ter(thieno-[3,2-b]thiophene) reveal edge-to-face pi-stacked dimer
Selenophene-Based Heteroacenes: Synthesis, Structures, and Physicochemical Behaviors
作者:Wan Xu、Mengjie Wang、Zhiying Ma、Zhen Shan、Chunli Li、Hua Wang
DOI:10.1021/acs.joc.8b02107
日期:2018.10.5
On the basis of three new building blocks, dithieno[3,2-b:2',3'-d]selenophene (tt-DTS), diseleno[3,2-b:2',3'd]thiophene (tt-DST), and diseleno[3,2-b:2',3'-d]selenophene (tt-DSS), four thiophene-and selenophene-based heteroacenes (3a-d) with up to seven fused rings were designed and synthesized. Another two selenophene-based heteroacenes (1 and 2) with three and five fused rings were prepared. The molecular structures of 1, 2, 3a, and 3c were confirmed by single-crystal analysis. The results showed that molecular structures, spectroscopy features, and cyclic voltammetry behaviors could be modulated by changing the heteroatoms from sulfur to selenium for 3a-d or changing the numbers of selenophene rings for 1, 2, and 3d.