title: Photoelectrochemical polymerization of thiophene on self-assembled RuL2(NCS)2/di(3-aminopropyl)viologen on indium thin oxide.
abstract: Polythiophene layers were formed on self-assembled monolayers (SAMs)/indium tin oxide (ITO) using photoelectrochemical polymerization. The SAMs on ITO was prepared using Ru(4,4'-dicarboxylic acid-2,2'-bipyridine)2(NCS)2 and di(3-aminopropyl)viologen. The photoelectrochemically polymerized polythiophene layers on SAMs/ITO were characterized using UV-vis. absorption spectroscopy, atomic force microscopy, scanning electron microscopy, and cyclic voltammetry. The polymer layers have thickness of  360 nm, a dense surface morphology, optical gap of 2.38 eV, highest occupied molecular orbital of -5.2 eV and lowest unoccupied molecular orbital of -2.82 eV. In photoelectrochemical cells, the polythiophene on SAMs/ITO electrode showed a photocurrent of 5 microA/cm2.
authors.affiliation: Department of Chemistry, Hanyang University, 17 Haengdang-dong, Sungdong-ku, Seoul 133-791, Republic of Korea.
authors.forename: Wonjoo
authors.initials: W
authors.lastname: Lee
authors.forename: Kyung-Hee
authors.initials: KH
authors.lastname: Hyung
authors.forename: Yunhee
authors.initials: Y
authors.lastname: Hwang
authors.forename: Byung Won
authors.initials: BW
authors.lastname: Cho
authors.forename: Soo-Hyoung
authors.initials: SH
authors.lastname: Lee
authors.forename: Sung-Hwan
authors.initials: SH
authors.lastname: Han