Optically transparent and mechanically tough glass with impact resistance and flame retardancy enabled by covalent/supramolecular interactions

文献类型： 外文期刊

第一作者： Cai, Changyong

作者： Cai, Changyong;Tan, Zhijian;Yao, Guohong;Zhang, Yunfei;Dong, Shengyi;Zhang, Shiguo;Li, Fenfang

作者机构：

期刊名称：MATERIALS HORIZONS （ 影响因子：10.7； 五年影响因子：12.1 ）

ISSN： 2051-6347

年卷期： 2024 年 11 卷 22 期

页码：

收录情况： SCI

摘要： Exploring glass materials beyond inorganic components represents a new direction in the development of artificial transparent materials. Inspired by the successes of polymeric and supramolecular glasses, we shifted our attention to the preparation of a transparent glass through the polymerization of low-molecular-weight monomers that are naturally tailored with noncovalent recognition motifs. In this work, an imidazolium unit bearing a vinyl group and a tetrafluoroborate counter anion was selected to construct an artificial glass. Experimental and theoretical investigations revealed that the cross-linking behavior of anions effectively transformed linear polymeric chains into three-dimensional networks. The polymeric-supramolecular glass exhibits a tough tensile strength (61.31 MPa), high Young's modulus (1.17 GPa), and good optical transparency (>90%), which are comparable to those of polymethyl methacrylate. Moreover, the obtained glass maintains excellent mechanical toughness and optical transparency over a wide temperature range (from -150 to 150 degrees C). The material shows a superior impact resistance (18.34 kJ m(-2)) and flame retardancy (V0 rating), which are barely achieved by supramolecular materials.

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