Institute of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan.
J Colloid Interface Sci. 2012 Feb 15;368(1):663-6. doi: 10.1016/j.jcis.2011.11.040. Epub 2011 Dec 7.
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.
在这项研究中，通过受限光催化氧化（CPO）成功地将π共轭聚合物聚（2-甲氧基-5-（2'-乙基己氧基）-1,4-亚苯基乙烯基）（MEH-PPV）的表面修饰为硫酸盐阴离子（SO(4-))基团。表面修饰后，MEH-PPV 的水接触角从 95.5°变为 82.1°，而其光学性质（基于 UV 和 PL 光谱）不受影响，水滴可以在没有滑动的情况下被吸收到改性 MEH-PPV 表面上，即使在基板倾斜角度为 90°和 180°时也是如此。MEH-PPV 表面上的 CPO 能够进一步扩展 MEH-PPV 的应用。此外，水传输测试表明，改性 MEH-PPV 可以成为输送水滴的候选材料。
