Solution-Processable Dithienothiophenoquinoid (DTTQ) Structures for Ambient-Stable n-Channel Organic Field Effect Transistors
作者:Sureshraju Vegiraju、Guan-Yu He、Choongik Kim、Pragya Priyanka、Yen-Ju Chiu、Chiao-Wei Liu、Chu-Yun Huang、Jen-Shyang Ni、Ya-Wen Wu、Zhihua Chen、Gene-Hsiang Lee、Shih-Huang Tung、Cheng-Liang Liu、Ming-Chou Chen、Antonio Facchetti
DOI:10.1002/adfm.201606761
日期:2017.6
series of dialkylated dithienothiophenoquinoids (DTTQs), end-functionalized with dicyanomethylene units and substituted with different alkyl chains, are synthesized and characterized. Facile one-pot synthesis of the dialkylated DTT core is achieved, which enables the efficient realization of DTTQs as n-type active semiconductors for solution-processable organic field effect transistors (OFETs). The molecular
合成并表征了一系列用二氰基亚甲基单元末端官能化并被不同烷基链取代的二烷基化二噻吩并噻吩喹啉类(DTTQ)。实现了二烷基化DTT核的轻松的一锅合成,这使得DTTQ可以有效地实现为可溶液处理的有机场效应晶体管(OFET)的n型有源半导体。己基取代的DTTQ-6的分子结构是通过单晶X射线衍射确定的,表明DTTQ是一个非常平坦的核。该DTTQ核心形成“之字形”链接层,并且这些层以“面对面”排列堆叠。非常平坦的核心结构,较短的核心堆叠距离(3.30Å),较短的分子间S N距离(2.84Å)和非常低的最低最低空位分子轨道能级(-4.2 eV)表明DTTQs应该是出色的电子传输候选物。系统地研究了这些新型DTTQ的物理和电化学性质以及OFETs性能和薄膜形态。使用溶液剪切法,DTTQ-11表现出最大的迁移率高达0.45 cm 2 V -1 s -1的n通道传输和当前的开/关比(ION / I OFF)大于10