作者:Shin’ichi Nakatsuji、Kazunori Aoki、Hiroki Akutsu、Jun-ichi Yamada、Takahiro Kojima、Jun-ichi Nishida、Yoshiro Yamashita
DOI:10.1246/bcsj.20100114
日期:2010.9.15
A couple of naphthalenediimide 4 and 5 and series of perylenediimide derivatives 6–9 carrying TEMPO radical were prepared and their redox, FET, and magnetic properties were investigated. The radical compounds 4 and 6–9 were found to show antiferromagnetic interactions obeying the Curie–Weiss model, while the naphthalenediimide derivative 5 exhibited a singlet–triplet magnetic behavior and it could be well understood by the short oxygen-to-oxygen distance between the spin centers observed in its crystal structure. Owing presumably to their appropriate reduction potentials and structural motifs, exhibitions of n-type FET properties were disclosed in these radical compounds with mobilities of the order from 10−5 to 10−8 cm2 V−1 s−1 and apparent increase of mobilities was observed in the radical compounds 5 and 7 by the surface treatment with HMDS.
制备了几种萘二酰亚胺 4 和 5 以及一系列带有 TEMPO 自由基的佩伦二酰亚胺衍生物 6–9,并对其氧化还原、电场效应晶体管(FET)和磁性质进行了研究。发现自由基化合物 4 和 6–9 表现出符合库里-魏斯模型的反铁磁相互作用,而萘二酰亚胺衍生物 5 展现出单重态-三重态的磁行为,这可以通过其晶体结构中自旋中心之间的短氧–氧距离来很好地解释。由于它们适当的还原电位和结构特征,这些自由基化合物展示了 n 型 FET 性质,迁移率在 10−5 到 10−8 cm2 V−1 s−1 之间,且通过 HMDS 表面处理观察到自由基化合物 5 和 7 的迁移率明显增加。