Synthesis and Electronic Structure Investigations of α,ω-Bis(arylthio)oligothiophenes: Toward Understanding Wire-Linker Interactions in Molecular-Scale Electronic Materials
作者:Robin G. Hicks、Matthew B. Nodwell
DOI:10.1021/ja000752t
日期:2000.7.1
thiophenes on mesitylenesulfenyl chloride. The oligomers were assembled by oxidative coupling or palladium-catalyzed Stille coupling of 2-stannylthiophenes with 2-bromothiophenes. The solution electronic spectra of all oligomers display a red-shift in the lowest-energy transition maximum (λmax) relative to oligothiophenes lacking the MesS- group. The red-shift arises from conj...
已经制备并通过紫外-可见光谱和循环伏安法研究了几种具有 2-甲基硫 (MesS) 取代基的低聚噻吩。这些化合物可以被认为是硫醇封端的共轭低聚物的模型,它们作为分子级电子器件的材料引起了强烈的兴趣。制备了三种类型的低聚物:α,ω-双(甲基苯硫基)低聚噻吩 4−7、α,ω-双(甲基苯硫基)低聚(3,4-乙基烯二氧基噻吩)s 12−14 和 α,ω-双(甲基苯硫基)包含噻吩和 3,4-亚乙基二氧噻吩环的低聚物 15-19。通过锂化噻吩对均三甲苯亚磺酰氯的亲核攻击引入均三甲苯硫基。通过氧化偶联或钯催化的 2-甲锡基噻吩与 2-溴噻吩的 Stille 偶联来组装低聚物。相对于缺乏 MesS- 基团的低聚噻吩,所有低聚物的溶液电子光谱显示最低能量跃迁最大值 (λmax) 的红移。红移产生于连接...