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在逐渐增加的聚烯胺分子重量过程中可控制的蓝色转移和增强辐射

Qing Zhou^1,2, Haiyan Xu¹, Wang Chen¹

¹Engineering Research Center for Eco-Dyeing and Finishing of Textiles, Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, College of Textile Science and Engineering (International Institute of Silk), Zhejiang Sci-Tech University, Hangzhou, 310018, P. R. China.

Macromolecular rapid communications

|April 9, 2024

概括

控制聚合物分子量 (MW) 影响发光特性. 高MW的聚烯胺呈现出增强的室温持久光 (p-RTP) 和蓝移排放,对防伪应用有用.

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:

非传统的发光聚合物正因其持续的室温光 (p-RTP) 和薄膜形成能力而受到关注.
众所周知,聚合物分子重量 (MW) 影响发光性质,通常会导致红色变化,MW增加.

研究的目的:

为了研究受控分子量对多烯胺的光发光和p-RTP特征的影响.
探索MW,聚合物链相互作用和排放特性之间的关系.

主要方法:

通过可逆添加-碎片化链转移 (RAFT) 聚合,合成四种不同MW的聚烯胺.
光发光量子产量的表征,p-RTP寿命和辐射波长.
使用小角度X射线散射 (SAXS) 和理论计算进行分析.

主要成果:

光发光量子产量和p-RTP寿命随着MW的增加而增加.
恒定的室温光 (p-RTP) 辐射随着MW的增加显示出蓝色转移.
观察到的现象是由聚类触发发射 (CTE) 机制和变化的分子间相互作用解释的.

结论:

分子重量是调整聚烯胺中p-RTP特性的一个关键参数.
该研究提供了对CTE机制的见解,并提供了设计发光聚合物的策略.
可控制的p-RTP材料显示了防伪技术的潜力.

关键词:

集群排放中心集群排放中心.聚类触发排放的排放.分子重量的分子质量.非传统的聚合物发光剂.可逆的添加-碎片化链转移聚合.

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