文献类型：期刊文献

英文题名：Directional Photomanipulation of Breath Figure Arrays

作者：Wang, Wei[1];Du, Can[2];Wang, Xiaofan[1];He, Xiaohua[3];Lin, Jiaping[1];Li, Lei[2];Lin, Shaoliang[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Key Lab Ultrafine Mat,Minist Educ, Shanghai 200237, Peoples R China;[2]Xiamen Univ, Coll Mat, Xiamen 361005, Peoples R China;[3]E China Normal Univ, Dept Chem, Shanghai 200241, Peoples R China

年份：2014

卷号：53

期号：45

起止页码：12116

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20160801967722);WOS:【SCI-EXPANDED(收录号:WOS:000344052000019)】；

基金：This work was supported by the National Natural Science Foundation of China (51103044, 21174038, 51373143, 51035002, and 21174116), the Projects of Shanghai Municipality (11A1401600, 13ZZ041, and 12JC1403102), and the Fundamental Research Funds for the Central Universities (NCET-12-0857, WD1213002, 2013SH003, and 201312G004).

语种：英文

外文关键词：block copolymers; breath figures; microarrays; photomanipulation; thin films

摘要：Porous polymeric films are of paramount importance in many areas of modern science and technology. However, processing methods typically based on direct writing, imprint, and lithography techniques have low throughput and are often limited to specific fabricated shapes. Herein, we demonstrate the directional photomanipulation of breath figure arrays (BFAs) formed by an azobenzene-containing block copolymer to address the aforementioned problems. Under the irradiation of linearly polarized light, the round pores in the BFAs were converted to rectangular, rhombic, and parallelogram-shaped pores in 30 min, due to the anisotropic mass migration based on the photo-reconfiguration of the azobenzene units. Through a secondary irradiation after rotating the sample by 90 degrees, the transformed pores were apparently recovered. Therefore, this non-contacted, directional photomanipulation technique in conjunction with breath figure processing opens a new route to nano/microporous films with finely tuned features.