Synthesis of Bis([2,2′-bithiophen]-5-yl)-Substituted Oligothiadiazoles: Effect of the Number of Acceptor Units on Electrochemical and Spectroscopic Properties
作者:Anastasia S. Kostyuchenko、Aleksandra Kurowska、Pawel Zassowski、Tatyana Yu. Zheleznova、Evgeny B. Ulyankin、Wojciech Domagala、Adam Pron、Alexander S. Fisyuk
DOI:10.1021/acs.joc.9b01216
日期:2019.8.16
3-alkyl-(2,2′-bithiophene)-5-carboxylate as a convenient substrate. These new compounds with a fixed number of donor rings and increasing number of acceptor rings showed very interesting, tunable redox properties. In particular, they exhibited electron affinities (EAs) ranging from −3.06 to −3.83 eV, reaching EA values desired for air-operating n-type organic semiconductors. Their electrochemically determined
1,3,4-噻二唑,2,2'-双(1,3,4-噻二唑),2,2':5',2″ -ter(1,3,4-噻二唑)和2,2通过新的方法容易地合成了被3-烷基-(2,2'-联噻吩)-5-基对称地二取代的':5',2″:5″,2′-季铵盐(1,3,4-噻二唑)可用的3-烷基-(2,2'-联噻吩)-5-羧酸乙酯作为方便的底物。这些具有固定数目的供体环和越来越多的受体环的新化合物显示出非常有趣的,可调节的氧化还原特性。特别是,它们表现出的电子亲和力(EA)在-3.06至-3.83 eV的范围内,达到了空气操作n型有机半导体所需的EA值。它们的电化学测定电离电势仅适度取决于噻二唑环的数量,范围为5.83至6.01 eV。这些化合物的发射光谱也可以在很宽的范围内(从470到600 nm)进行调谐。光谱和电化学数据通过证明完全一致性的密度泛函理论计算得到证实。