Influence of Structural Variation on the Solid-State Properties of Diketopyrrolopyrrole-Based Oligophenylenethiophenes: Single-Crystal Structures, Thermal Properties, Optical Bandgaps, Energy Levels, Film Morphology, and Hole Mobility
作者:Chunki Kim、Jianhua Liu、Jason Lin、Arnold B. Tamayo、Bright Walker、Guang Wu、Thuc-Quyen Nguyen
DOI:10.1021/cm202852f
日期:2012.5.22
investigate the effect of structural variations on solid state properties, such as single-crystal structures, optical absorption, energy levels, thermal phase transitions, film morphology, and hole mobility. The molecular structures were modified by means of (i) backbone length by changing the number of thiophenes on both sides of DPP, (ii) alkyl substitution (n-hexyl or ethylhexyl) on DPP, and (iii) the
合成了五种基于二酮吡咯并吡咯(DPP)和亚苯基噻吩(PT)的化合物,以研究结构变化对固态性能的影响,例如单晶结构,光吸收,能级,热相变,薄膜形态和空穴迁移率。分子结构通过以下方式修饰:(i)通过改变DPP两侧的噻吩数量,(ii)DPP上的烷基取代基(正己基或乙基己基)和(iii)存在n分子主链末端的-己基。这些基于DPP的低聚苯撑噻吩具有紫外可见光谱,差示扫描量热法(DSC),热重分析(TGA),循环伏安法(CV),紫外光电子能谱(UPS),原子力显微镜(AFM)和空穴分析技术。仅二极管。提供了单晶结构,以分子水平的分辨率探究结构与属性之间的关系。这项工作证明了烷基取代以及骨架长度在调节材料的固态特性中的重要性。