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Light‐Driven Shape Memory Porous Films with Precisely Controlled Dimensions

Here we report an unconventional strategy for crafting light‐driven shape memory porous films (SMPFs) by judiciously constructing highly ordered porous films via a facile "breath figure" approach, followed by sequential vapor crosslinking and nondestructive directional light manipulation. The latter can conveniently and precisely transform round micropores into other shapes including round‐rectangle, round‐rhombus and size‐reduced micropores at room temperature. Importantly, the transformed micropores can be perfectly reverted to original shapes by either thermal annealing or UV irradiation. As such, this strategy expands the rich diversity of SMPs accessible, particularly SMPFs of different shapes, compositions and functionalities, and has promising potential to underpin future advances in electronics, photonics, robust membrane for efficient separation and purification, functional biomaterials for the regenerative therapy, among other areas.

Autoren:   Wei Wang, Dingfeng Shen, Xiao Li, Yuan Yao, Jiaping Lin, Aurelia Wang, Jiwoo Yu, Zhonglin Wang, Suck Won Hong, Shaoliang Lin, Zhiqun Lin
Journal:   Angewandte Chemie International Edition
Jahrgang:   2018
Seiten:   n/a
DOI:   10.1002/anie.201712100
Erscheinungsdatum:   11.01.2018
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