Modulating the Electronic and Solid‐State Structure of Organic Semiconductors by Site‐Specific Substitution: The Case of Tetrafluoropentacenes
作者:Thomas Geiger、Simon Schundelmeier、Thorsten Hummel、Markus Ströbele、Wolfgang Leis、Michael Seitz、Clemens Zeiser、Luca Moretti、Margherita Maiuri、Giulio Cerullo、Katharina Broch、Jörn Vahland、Karl Leo、Cäcilia Maichle‐Mössmer、Bernd Speiser、Holger F. Bettinger
DOI:10.1002/chem.201905843
日期:2020.3.12
The properties as well as solid‐state structures, singlet fission, and organic field‐effect transistor (OFET) performance of three tetrafluoropentacenes (1,4,8,11: 10, 1,4,9,10: 11, 2,3,9,10: 12) are compared herein. The novel compounds 10 and 11 were synthesized in high purity from the corresponding 6,13‐etheno‐bridged precursors by reaction with dimethyl 1,2,4,5‐tetrazine‐3,6‐dicarboxylate at elevated
性质以及固态结构,单峰裂变,和三个tetrafluoropentacenes(1,4,8,11有机场效应晶体管(OFET)性能:10,1,4,9,10:11,2,3- ,9,10:12)在此进行比较。通过与1,2,4,5-四嗪-3,6-二羧酸二甲酯在高温下反应,由相应的6,13-乙氧基桥接的前体以高纯度合成了新型化合物 10和11。尽管化合物的大多数分子性质相似,但它们的化学反应性和晶体结构却有很大差异。异构体10经历轨道对称,禁止热[4 + 4]二聚化,而异构体 11和1112的反应性小得多。异构体11和12以人字形结晶,但是10更喜欢π-π堆积。尽管中性化合物的第一个电偶极子允许的光跃迁的能量仅在370 cm -1(0.05 eV)范围内变化,但对于自由基阳离子而言大约为1600 cm -1(0.20 eV),而在1300 cm -1(0.16) eV)。11和12薄膜的瞬态光谱显