title: Molecular orientation and field-effect transistors of a rigid rod conjugated polymer thin films.
abstract: Molecular orientation in thin films of a rigid rod conjugated polymer, a derivative of poly(para-phenylene ethynylene)s with linear side chains and thioacetyl end groups, was investigated by reflection-absorption infrared spectroscopy and X-ray diffraction technique. The results indicated that TA-PPE molecules tended to align with their backbone planes perpendicular to substrates, that is, with an "edge-on" molecular orientation in the films. Such molecular orientation is favorable for the efficient carrier transport in two-dimensional direction in the polymer films (i.e., via both the intrachain and interchain), so that high performance organic field-effect transistors were fabricated with hole mobility at around approximately 4.3 x 10(-3) cm(2)/Vs.
authors.forename: Huanli
authors.initials: H
authors.lastname: Dong
authors.forename: Hongxiang
authors.initials: H
authors.lastname: Li
authors.forename: Erjing
authors.initials: E
authors.lastname: Wang
authors.forename: Shouke
authors.initials: S
authors.lastname: Yan
authors.forename: Jianming
authors.initials: J
authors.lastname: Zhang
authors.forename: Chunming
authors.initials: C
authors.lastname: Yang
authors.forename: Isao
authors.initials: I
authors.lastname: Takahashi
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Nakashima
authors.forename: Keiichi
authors.initials: K
authors.lastname: Torimitsu
authors.forename: Wenping
authors.initials: W
authors.lastname: Hu