title: Nanowire crystals of a rigid rod conjugated polymer.
abstract: In this paper, we show that well-defined, highly crystalline nanowires of a rigid rod conjugated polymer, a poly(para-phenylene ethynylene)s derivative with thioacetate end groups (TA-PPE), can be obtained by self-assembling from a dilute solution. Structural analyses demonstrate the nanowires with an orthorhombic crystal unit cell wherein the lattice parameters are a approximately = 13.63 A, b approximately = 7.62 A, and c approximately = 5.12 A; in the nanowires the backbones of TA-PPE chains are parallel to the nanowire long axis with their side chains standing on the substrate. The transport properties of the nanowires examined by organic field-effect transistors (OFETs) suggest the highest charge carrier mobility approaches 0.1 cm(2)/(V s) with an average value at approximately 10(-2) cm(2)/(V s), which is 3-4 orders higher than that of thin film transistors made by the same polymer, indicating the high performance of the one-dimensional polymer nanowire crystals. These results are particular intriguing and valuable for both examining the intrinsic properties of PPEs polymer semiconductors and advancing their potential applications in electronic devices.
authors.affiliation: Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
authors.forename: Huanli
authors.initials: H
authors.lastname: Dong
authors.forename: Shidong
authors.initials: S
authors.lastname: Jiang
authors.forename: Lang
authors.initials: L
authors.lastname: Jiang
authors.forename: Yaling
authors.initials: Y
authors.lastname: Liu
authors.forename: Hongxiang
authors.initials: H
authors.lastname: Li
authors.forename: Wenping
authors.initials: W
authors.lastname: Hu
authors.forename: Erjing
authors.initials: E
authors.lastname: Wang
authors.forename: Shouke
authors.initials: S
authors.lastname: Yan
authors.forename: Zhongming
authors.initials: Z
authors.lastname: Wei
authors.forename: Wei
authors.initials: W
authors.lastname: Xu
authors.forename: Xiong
authors.initials: X
authors.lastname: Gong