聚合物基质中嵌入的鱼腥草素的光物理特性受体极性和非键相互作用的调节

IF 2.8 3区化学 Q3 CHEMISTRY, PHYSICAL

Chemical Physics Letters Pub Date : 2024-09-18 DOI:10.1016/j.cplett.2024.141636

Yan Liu , Yan Ding , Yongchun Tan , Jian Luo

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引用次数: 0

摘要

聚合物基质中缓慢的溶解动力学和丰富的非键相互作用可调节客体发色团的光物理特性。在这项工作中，我们使用鱼藤黄素作为荧光探针，探索了聚乙烯醇（PVA）基质中的微环境及其对激发态质子转移（ESPT）的影响。与 PVA 溶液相比，鱼藤素在 PVA 薄膜中的荧光大大增强，ESPT 屏障也随之增加。研究发现，PVA 薄膜的体积极性以及水和鱼藤素之间特定位点的分子间氢键都是造成溶液中不存在的异常吸收和发射特性的原因。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Photophysical properties of fisetin embedded in polymer matrix modulated by both bulk polarity and non-bonding interactions

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Photophysical properties of fisetin embedded in polymer matrix modulated by both bulk polarity and non-bonding interactions

Slow solvation dynamics and abundant non-bonding interactions in polymer matrix can modulate photophysical properties of guest chromophores. In this work, we used fisetin as a fluorescent probe to explore the microenvironment in poly vinyl alcohol (PVA) matrix and its effect on excited-state proton transfer (ESPT). Compared to in PVA solution, fluorescence of fisetin in PVA film is largely enhanced and ESPT barrier is increased. Both bulk polarity of PVA film and site-specific intermolecular hydrogen bonding between water and fisetin were determined to contribute to anomalous absorption and emission properties absent in solutions.

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来源期刊

Chemical Physics Letters 化学-物理：原子、分子和化学物理

CiteScore

5.70

自引率

3.60%

发文量

798

审稿时长

33 days

期刊介绍： Chemical Physics Letters has an open access mirror journal, Chemical Physics Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Chemical Physics Letters publishes brief reports on molecules, interfaces, condensed phases, nanomaterials and nanostructures, polymers, biomolecular systems, and energy conversion and storage. Criteria for publication are quality, urgency and impact. Further, experimental results reported in the journal have direct relevance for theory, and theoretical developments or non-routine computations relate directly to experiment. Manuscripts must satisfy these criteria and should not be minor extensions of previous work.