Wakahara Takatsugu, Nagaoka Kahori, Hirata Chika, Miyazawa Kun'ichi, Fujii Kazuko, Matsushita Yoshitaka, Ito Osamu, Takagi Makito, Shimazaki Tomomi, Tachikawa Masanori, Wada Yoshiki, Yagyu Shinjiro, Liu Yubin, Nakajima Yoshiyuki, Tsukagoshi Kazuhito
Research Center for Functional Materials, National Institute for Materials Science 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan
Department of Chemical Sciences and Technology, Graduate School of Chemical Sciences and Technology, Tokyo University of Science 6-3-1 Niijuku, Katsushika-ku Tokyo 125-8585 Japan.
RSC Adv. 2022 Jul 6;12(30):19548-19553. doi: 10.1039/d2ra02669d. eCollection 2022 Jun 29.
In recent years, supramolecular cocrystals containing organic donors and acceptors have been explored as active components in organic field-effect transistors (FETs). Herein, we report the synthesis of novel single-cocrystal nanoribbons with ambipolar charge transport characteristics from C and 5,10,15,20-tetrakis(3,5-dimethoxyphenyl)porphyrin (3,5-TPP) in a 3 : 2 ratio. The C/3,5-TPP nanoribbons exhibited a new strong absorption band in the near-infrared region, indicating the presence of charge-transfer interactions between C and 3,5-TPP in the cocrystals. We elucidated the mechanism of the charge-transport properties of the nanoribbons using photoemission yield spectroscopy in air and theoretical calculations. A strong interaction between porphyrins in the one-dimensional porphyrin chains formed in C/3,5-TPP nanoribbons, which was confirmed by single-crystal X-ray diffraction, plays a crucial role in their hole transport properties.
近年来，含有有机供体和受体的超分子共晶体已被探索用作有机场效应晶体管（FET）的活性成分。在此，我们报告了以3:2的比例由C和5,10,15,20-四（3,5-二甲氧基苯基）卟啉（3,5-TPP）合成具有双极性电荷传输特性的新型单晶纳米带。C/3,5-TPP纳米带在近红外区域表现出一个新的强吸收带，表明共晶体中C和3,5-TPP之间存在电荷转移相互作用。我们利用空气中的光发射产额光谱和理论计算阐明了纳米带电荷传输性质的机制。通过单晶X射线衍射证实，在C/3,5-TPP纳米带中形成的一维卟啉链中的卟啉之间的强相互作用在其空穴传输性质中起关键作用。
