3 years ago

Solution Synthesis of Semiconducting Two-Dimensional Polymer via Trimerization of Carbonitrile

Solution Synthesis of Semiconducting Two-Dimensional Polymer via Trimerization of Carbonitrile
Yuxi Xu, Wu Zan, Jingjing Liu, Fanxing Bu, Yang Yang, Ke Li
The synthesis of crystalline two-dimensional polymers (2DPs) with proper bandgaps and well-defined repeating units presents a great challenge to synthetic chemists. Here we report the first solution synthesis of a single-layer/few-layer triazine-based 2DP via trimerization of carbonitrile at the interface of dichloromethane and trifluoromethanesulfonic acid. The processable triazine-based 2DP can be assembled into mechanically strong layered free-standing films with a high specific surface area via filtration. Moreover, the highly crystalline triazine-based 2DP can function as the active semiconducting layer in a field-effect transistor via drop coating and exhibits slightly bipolar behavior with a high on/off ratio of 103 and a remarkable mobility of 0.15 cm2 V–1 s–1.

Publisher URL: http://dx.doi.org/10.1021/jacs.7b05025

DOI: 10.1021/jacs.7b05025

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