微波响应灵活的室温光材料基于聚乙烯化物) 聚合物
Yongfeng Zhang1, Wei Zhang1, Junming Xia1
1School of Materials Science and Engineering, Beijing Institute of Technology, 5 South Zhongguancun street, Haidian district, Beijing, 100081, P. R. China.
Angewandte Chemie (International ed. in English)
|October 27, 2023
概括
灵活的室温光 (RTP) 材料是使用聚乙烯化物 (PVDF) 矩阵开发的. 微波辐射通过改变PVDF晶度和相位来诱导RTP,显示了微波检测的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 光物理学的光学物理学
背景情况:
- 灵活的室温光 (RTP) 材料具有挑战性,因为激子因分子运动而火.
- 通常需要一个高于室温的玻璃过渡温度 (Tg) 的聚合物矩阵来稳定三重激子.
- 现有的RTP材料往往遭受不稳定性和有限的可调性.
研究的目的:
- 开发一种具有可调节性质的新型灵活RTP材料.
- 调查聚合物矩阵特征对RTP性能的影响.
- 探索微波辐射对控制RTP行为和微波检测应用的潜力.
主要方法:
- 将4-二乙烯酸 (BPBA) 融入一个聚乙烯化物 (PVDF) 矩阵中.
- 描述RTP特性,包括光寿命和氧气消耗.
- 使用各种技术分析PVDF结晶性和多态分数 (α,β,γ相).
- 应用2.45 GHz微波辐射来诱导PVDF矩阵和RTP的变化.
主要成果:
- 一种BPBA-PVDF复合物表现出UV光依赖的氧气消耗光,寿命长 (1275.7毫秒).
- 发现RTP性能取决于PVDF结晶度和相组合.
- 微波辐射降低了PVDF结晶性,并增加了α相分数,在材料中诱导RTP.
结论:
- PVDF矩阵的低Tg允许在微波辐射下进行聚合物细分运动,从而实现RTP控制.
- 可以通过操纵聚合物矩阵特性来构建晶体和相位依赖的RTP材料.
- 这种方法为开发基于RTP的新型微波检测设备提供了有希望的途径.
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