title: Recent Progress in Synthesis and Application of Thiophene Oligomers Based on Bithiophene Dicarbanions.
abstract: This focus review summarizes our recent efforts on the synthetic applications of bithiophene dicarbanions generated from three bithiophene isomers: 2,2'-, 3,3'-, and 2,3'-bithiophene. Based on these bithiophene dicarbanions, a series of dithienothiophenes (DTTs) and cyclooctatetrathiophenes (COThs) were synthesized by intra- and intermolecular cyclizations, respectively. Moreover, recent applications of DTT and COTh in characteristic compounds such as dendrimers, thio[8]circulenes, double helicenes, and thienoacenes are summarized in this account. Besides the synthetic work, some photoelectric properties of the thiophene-based oligomers including organic field-effect transistors and organic photovoltaics are briefly reviewed.
authors.affiliation: National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials, Henan University Jinming Street Kaifeng, 475004, P.R. China.
authors.forename: Lu
authors.initials: L
authors.lastname: Li
authors.affiliation: National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials, Henan University Jinming Street Kaifeng, 475004, P.R. China.|Institute of Nanostructured Functional Materials Huanghe Science and Technology College, 94 Hanghai Street, Zhengzhou, 450006, P.R. China.
authors.forename: Chunmei
authors.initials: C
authors.lastname: Zhao
authors.affiliation: National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials, Henan University Jinming Street Kaifeng, 475004, P.R. China.
authors.forename: Hua
authors.initials: H
authors.lastname: Wang
keywords: fused-ring systems; heterocycles; photochemistry; synthesis design; thiophenes