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基于DEGMA的光敏螺旋和共聚物,具有可光切换的玻璃过渡温度

Vaishali Pruthi¹, Yosuke Akae^1,2, Patrick Théato^1,3

¹Institute for Chemical Technology and Polymer Chemistry (ITCP), Karlsruhe Institute of Technology, Engesserstraße 18, 76128, Karlsruhe, Germany.

Macromolecular rapid communications

|June 26, 2023

概括

新型光敏螺旋 (SP) 共聚合物在暴露于紫外线光线时显示可调节的玻璃过渡温度. 这种光异构增强了热稳定性,并使其能够集成到先进的光敏材料中.

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:

螺旋 (SP) 化合物表现出可逆的光异构体,使光引起的结构变化成为可能.
光敏聚合物对于开发先进的功能性材料至关重要.
用外部刺激控制聚合物特性,如玻璃过渡温度 (T_g) 是一个关键的研究领域.

研究的目的:

为了合成和描述基于SP的新型光响应性螺旋 (SP) P(DEGMA-co-SpMA) kopo 聚合物.
研究SP含量对共聚物质光反应,结构和热性质的影响.
为了证明这些新型共聚合物的可光切换玻璃过渡温度 (T_g).

主要方法:

合成具有不同SP分量的P ((DEGMA-co-SpMA) 共聚合物.
使用技术来评估光响应性,结构性和热性质的表征.
在紫外线照射 (λ = 365 nm) 时对SP组的光异构化进行研究.

主要成果:

合成的共聚物体表现出SP群的可逆光异构体.
这些共聚物具有可光切换玻璃过渡温度 (T_g) 和高热稳定性 (T_d>> 250°C).
紫外线照射导致T_g增加,这是由于SP导致梅洛胺光异构化,增加极性和系统顺序.

结论:

合成的基于SP的共聚物具有可光调节的玻璃过渡温度.
观察到的T_g的增加与光异构化时增加的极性和减少的有关.
这些聚合物是集成到各种光响应功能材料的有希望的候选者.

关键词:

玻璃过渡温度是玻璃过渡温度.光异构化是指光异构化的过程.照相响应度照相响应度螺旋子和螺旋子是什么?

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