Design of Highly Photofunctional Porous Polymer Films with Controlled Thickness and Prominent Microporosity. Issue 39 (31st July 2015)

• Record Type: Journal Article
• Authors: Gu, Cheng; Huang, Ning; Wu, Yang; Xu, Hong; Jiang, Donglin
• Is Part Of: Angewandte Chemie international edition. Volume 54:Issue 39(2015)
• Page Start: 11540
• Page End: 11544
• Publication Date: 2015-07-31
• Subjects: aggregation‐induced emission -- luminescence -- porous polymers -- sensors -- thin films; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201504786
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: 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. Abstract : Thin but brilliant : Porous π‐networks (see structure) were synthesized from monomers designed by a general strategy to contain a core enabling aggregation‐induced emission, twisted linkers, and electropolymerizable peripheral units. The thickness of the resulting highly emissive porous polymer films could be controlled precisely, and films with a thickness below 10 nm were used for the sensitive detection of explosives by electron transfer.