Comparative study of soluble naphthalene diimide derivatives bearing long alkyl chains as n-type organic thin-film transistor materials
Comparative study of soluble naphthalene diimide derivatives bearing long alkyl chains as n-type organic thin-film transistor materials
复制标题
DOI：
10.1016/j.orgel.2012.10.038
复制
发表时间：
2013-02-01
影响因子：
3.2
通讯作者：
Oguma, Naomi
中科院分区：
文献类型：
--
作者：
Ichikawa, Musubu;Yokota, Yoichiro;Oguma, Naomi
在这项研究中，几种在N和N'位置被不同长度的长正烷基链取代的萘四甲酸二酰亚胺（NTCDI）衍生物被评估为可溶性n型有机薄膜晶体管（TFT）材料。具有双十一烷基（NTCDI-C11）、双十二烷基（NTCDI-C12）和双十三烷基（NTCDI-C13）的NTCDI衍生物在氯仿中表现出可接受的溶解度，并且它们的TFT在150℃的工作温度下退火后表现出典型的n型TFT性能，具有相对较高的场效应电子迁移率（类似于0.2 cm(2)/V s）。二辛基(NTCDI-C8)在氯仿中表现出良好的溶解度，该材料的TFT性能远不如NTCDI-C11、NTCDI-C12或NTCDI-C13。由于材料从基板上升华，我们无法在真空中的工作温度下对 NTCDI-C8 薄膜进行退火。相比之下，具有双十五烷基（NTCDI-C15）和双十八烷基（NTCDI-C18）的NTCDI对氯仿的溶解度较差，并且TFT性能较差。简而言之，这些化合物不适合作为可溶性n型有机TFT材料。 (C) 2012 Elsevier B.V. 保留所有权利。
In this study, several naphthalene tetracarboxylic acid diimide (NTCDI) derivatives substituted at the N and N' positions with long normal alkyl chains of different lengths were evaluated as soluble n-type organic thin-film transistor (TFT) materials. NTCDI derivatives with diundecyl (NTCDI-C11), didodecyl (NTCDI-C12), and ditridecyl (NTCDI-C13) exhibited acceptable solubility in chloroform, and their TFTs showed typical n-type TFT performance with relatively high field effect electron mobility (similar to 0.2 cm(2)/V s) after annealing at a workable temperature of 150 degrees C. Although NTCDI with dioctyl (NTCDI-C8) showed good solubility in chloroform, the TFT performance of this material was highly inferior to that of NTCDI-C11, NTCDI-C12, or NTCDI-C13. We could not anneal NTCDI-C8 thin films at workable temperatures in vacuo because of sublimation of the material from the substrates. In contrast, NTCDI with dipentadecyl (NTCDI-C15) and dioctadecyl (NTCDI-C18) exhibited both poor solubility for chloroform and poor TFT performance. In short, these compounds are not suitable as soluble n-type organic TFT materials. (C) 2012 Elsevier B.V. All rights reserved.