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Design of Highly Photofunctional Porous Polymer Films with Controlled Thickness and Prominent Microporosity
Author(s) -
Gu Cheng,
Huang Ning,
Wu Yang,
Xu Hong,
Jiang Donglin
Publication year - 2015
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201504786
Subject(s) - microporous material , materials science , porosity , polymer , thin film , nanotechnology , template , electrode , chemical engineering , explosive material , nanometre , chemistry , organic chemistry , composite material , engineering
Porous organic polymers allow the integration of various π‐units into robust porous π‐networks, but they are usually synthesized as unprocessable solids with poor light‐emitting performance as a result of aggregation‐related excitation dissipation. Herein, we report a general strategy for the synthesis of highly emissive photofunctional porous polymer films on the basis of a complementary scheme for the structural design of aggregation‐induced‐emissive π‐systems. We developed a high‐throughput and facile method for the direct synthesis of large‐area porous thin films at the liquid–electrode interface. The approach enables the preparation of microporous films within only a few seconds or minutes and allows precise control over their thickness with sub‐nanometer precision. By virtue of rapid photoinduced electron transfer, the thin films can detect explosives with enhanced sensitivity to low parts‐per‐million levels in a selective manner.