title: Surface modification of poly(2-methoxy-5-(2'-ethyl-hexyloxy)-1,4-phenylene vinylene) (MEH-PPV) by confined photo-catalytic oxidation.
abstract: In this study, the surface of π-conjugated polymer, poly(2-methoxy-5-(2'-ethyl-hexyloxy)-1,4-phenylene vinylene) (MEH-PPV), was successfully modified with the sulfate anion (SO(4-)) groups by the confined photo-catalytic oxidation (CPO). After the surface modification, the water contact angle of MEH-PPV is changed from 95.5° to 82.1° without influence on its optical properties (based on the UV and PL spectra), and the water droplet can be absorbed on the modified MEH-PPV surface without sliding even at substrate tilt angles of 90° and 180°. The CPO on the MEH-PPV surface is able to further expand the use of MEH-PPV for applications. In addition, the water transport test indicates that the modified MEH-PPV can be a candidate for transporting water droplet.
authors.affiliation: Institute of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan.
authors.forename: Ying-Chieh
authors.initials: YC
authors.lastname: Yen
authors.forename: Chih-Chia
authors.initials: CC
authors.lastname: Cheng
authors.forename: Yeh-Sheng
authors.initials: YS
authors.lastname: Wang
authors.forename: Yu-Lin
authors.initials: YL
authors.lastname: Chu
authors.forename: Chu-Hua
authors.initials: CH
authors.lastname: Lu
authors.forename: Wantai
authors.initials: W
authors.lastname: Yang
authors.forename: Feng-Chih
authors.initials: FC
authors.lastname: Chang