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在不同度的Kaempferol粉末和溶液中基于激发状态质子转移的光

T Prutskij¹, A Deriabina², G D Vázquez Leon²

¹ICUAP, Autonomous University of Puebla (BUAP), Puebla, Pue, Mexico.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy

|December 29, 2023

概括

珀醇 (KMP) 的光光谱显示了与质子转移机制相关的明显的排放峰值. 这些发现为KMP提供了洞察力.

科学领域:

摄影化学的使用.
材料科学材料科学材料科学
生物物理学的生物物理.

背景情况:

凯姆费醇 (KMP) 是一种常见的黄类化合物,有研究的健康益处.
了解KMP的光物理特性对于其应用至关重要.
光 (FL) 发射是特征分子的一个关键性质.

研究的目的:

为了研究Kempferol (KMP) 粉末和溶液的光辐射光谱.
为了阐明KMP度,溶剂类型和FL排放之间的关系.
为了确定KMP观察到的光峰值背后的分子机制.

主要方法:

在不同度和溶剂中对KMP粉末和溶液的FL光谱进行实验测量.
时间依赖密度函数理论 (TD-DFT) 在真空和溶液中计算KMP.
对KMP和Quercetin (Q) 单酸FL光谱进行比较分析.

主要成果:

粉和高度溶液呈现1.9 eV的FL峰值,这归因于分子内质子转移 (-OH5).
较低的KMP度显示2.45 eV的FL峰值,与-OH3质子转移有关.
KMP的FL频谱取决于激发能量,与奎尔塞丁相比,观察到不同的特征.

结论:

该研究成功地将KMP中的特定FL发射波段与明显的质子转移事件联系起来.
度和溶剂极性显著影响KMP的光特性.
这些发现为Kaempferol的光物理和潜在应用提供了更深入的理解.

关键词:

在ESIPT的基础上,ESIPT是.激发波长依赖的发光效应.激发状态中的质子转移.凯姆菲罗尔醇是什么意思奎尔丁 (Quercetin) 是一种青素.

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