一个含有Te-O-B-O键的三维奇拉尔共价框架的紫外线非线性光学单晶
Miaomiao Xue1, Lei Zhang1, Xin Meng2
1Department of Materials Science and Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong SAR, P. R. China.
Angewandte Chemie (International ed. in English)
|July 22, 2024
概括
研究人员使用和开发了一种新型的性共价框架,CityU-22,使用和. 这种无碳材料具有出色的稳定性和紫外线非线性光学特性,为先进的功能材料铺平了道路.
科学领域:
- 材料科学 材料科学 材料科学
- 化学 化学 化学
- 晶体学 晶体学是指结晶学.
背景情况:
- 探索共价有机框架 (COFs) 通过创建无碳骨干来实现高级功能.
- 在框架中整合无机和有机组件可以改善非线性光学 (NLO) 的热/溶剂稳定性.
- 建造这种稳定,无金属的框架仍然是一个重大挑战.
研究的目的:
- 为了合成和表征一种新的,稳定的,无碳的性共价框架.
- 为了研究新材料的非线性光学 (NLO) 特性.
- 在NLO应用中探索非π结合的骨干的潜力.
主要方法:
- 通过将BO3和Te(Ph) 2的构建块连接起来,合成一个3D性共价框架 (CityU-22).
- 单晶X射线衍射 (SCXRD) 分析以确定结构和拓 (srs).
- 评估热和溶剂稳定性,并测量紫外线非线性光学 (NLO) 行为,包括第二声波生成 (SHG).
主要成果:
- 成功合成了CityU-22的无色单晶 (高达400微米).
- 通过SCXRD确定了一个基于srs拓的非碳Te-O-B-O债券网络.
- 证明了高稳定性 (分解> 300°C) 和显著的紫外线NLO特性 (SHG反应与KDP相比).
结论:
- 城市U-22代表了一种新型的稳定,无碳的性共价框架.
- 非π结合的Te-O-B-O骨干使独特的紫外线NLO特性成为可能.
- 这项工作为设计用于非线性光学的先进材料提供了新的策略.
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