具有内在结晶性和可光切换可逆的固体-液体过渡的亚佐聚合物
Jie Li1,2, Qiu-Yu Zhang2, Xiao-Bing Lu1
1State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, Dalian University of Technology, 2 Linggong Road, 116024, Dalian, China.
Angewandte Chemie (International ed. in English)
|September 22, 2023
概括
基于亚的新型聚体具有可光切换的固体-液体过渡和可调节的结晶性. 这些光敏聚合物显示出作为可调节粘合强度的光控制粘合剂的潜力.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
- 摄影化学的使用.
背景情况:
- 含有亚博的聚合物以其光响应性特性而闻名.
- 控制聚合物特性,如晶度和相变,对于先进材料至关重要.
研究的目的:
- 为了合成具有内在结晶性的新型亚博基聚合物.
- 为了研究这些亚聚合物的光诱导可逆固体-液体过渡行为.
- 探索它们作为可切换光的粘合剂的应用.
主要方法:
- 基于亚博的环氧化物与循环无水化物的共聚合.
- 聚属性的表征,包括化温度 (Tm) 和玻璃过渡温度 (Tg).
- 研究UV光诱导的光异构化 (trans-cis) 及其对材料状态和粘附性的影响.
主要成果:
- 合成的亚聚合物,Tm范围为51-251°C,受到侧链长度和立体规律性的影响.
- 在光照射后证明可逆的固体-液体过渡;固体 (转) 过渡到液体 (cis) 的Tg低于-20°C.
- 在各种基板上达到0.73-0.89 MPa (跨) 和~0.1 MPa (cis) 之间的光控制粘附强度.
结论:
- 基于亚的聚烯提供可调节的结晶性和光响应的固体-液体过渡.
- 这些材料作为有效的可切换光的粘合剂,允许通过紫外线精确控制粘合.
- 这项研究突出了阿佐聚合物的潜力,用于开发先进的光响应材料和智能粘合剂.
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