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制备,单晶结构和室温光的一种含有Te-O-P键的共价有机聚合物

Miaomiao Xue¹, Guigui Ye², Lei Zhang¹

¹Department of Materials Science and Engineering, City University of Hong Kong Hong Kong SAR P. R. China qiczhang@cityu.edu.hk.

Chemical science

|February 26, 2025

概括

研究人员使用开发了新的室温光 (RTP) 单晶共价有机聚合物 (COP). 这些无金属有机材料表现出稳定的RTP特性,即使在暴露于溶剂后,也解决了该领域的一个关键挑战.

科学领域:

材料科学材料科学材料科学
有机化学有机化学
固态物理固态物理

背景情况:

同价有机聚合物 (COP) 的室温光单晶 (RTP) 在无金属系统中对合成和实现RTP具有挑战性.
很少有人报道将等重主要组元素纳入功能单晶COP中.

研究的目的:

准备新型的COP单晶RTP,其中包含.
研究合成材料的结构和光物理特性.
在溶剂处理下评估结晶性和RTP行为的稳定性.

主要方法:

通过 Tellurinyldibenzene 和 [1,1'-biphenyl]-4,4'-diyl-bis(phosphonic acid 的反应合成一个 COP (CityU-21).
使用单晶X射线衍射 (SCXRD) 进行表征.
光发光谱学用于评估RTP属性 (寿命,量子产量,余光).
用溶剂浸泡测试来评估稳定性.

主要成果:

成功制备了CityU-21的无色单晶.
SCXRD证实了一种具有Te-O-P键的1D聚合物结构,通过键形成一个伪2D框架.
城市U-21表现出强大的RTP,寿命为179 ms (540 nm) 和158 ms (565 nm),量子产量为84.69%,以及1.2 秒后照.
该材料在60小时的溶剂浸泡后保持了结晶性和RTP特性 (0.8秒后光).

结论:

结合使得单晶COP中的RTP成为可能.
键在稳定结构和增强RTP方面发挥着至关重要的作用.
城市U-21表现出极好的稳定性,克服了RTP材料中常见的溶剂诱导的降解问题.

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