聚合诱导的光在低流量下对Pyrene的向上转换:在溶液和聚合物纳米粒子中
Anwesha Banerjee1, Kheyali De1, Ujjal Bhattacharjee1
1Department of Chemistry, Indian Institute of Engineering Science and Technology (IIEST) Shibpur, Howrah, West Bengal 711103, India.
The journal of physical chemistry. B
|January 16, 2024
概括
这项研究表明聚合诱导的光子向上转换 (iPUC) 在烯分子中. 水触发了烯聚合,使其能够在二元溶剂和聚合物纳米颗粒中进行上升转化,以增强光.
科学领域:
- 摄影化学的使用.
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
背景情况:
- 光子上升转换是一种将低能光子转换为高能光子的过程.
- 聚合诱导的辐射 (AIE) 和聚合诱导的光子向上转换 (iPUC) 是分子聚合增强光辐射的现象.
- 二烯是一种多芳香的碳化合物,经常用于光物理研究.
研究的目的:
- 为了证明聚合诱导的光子向上转换 (iPUC) 在小分子中.
- 调查溶剂环境和聚合物矩阵在iPUC中的作用.
- 探索iPUC在开发新型光学材料方面的潜力.
主要方法:
- 聚合诱导光子向上转换 (iPUC) 实验使用二元溶剂混合物 (水/有机溶剂) 中的烯.
- 对干溶剂与含水混合物的上转化排放的研究.
- 将烯上转换系统纳入共聚物纳米颗粒 (2-氨基乙基甲基酸-聚烯).
- 光谱分析以确认和量化上转换的排放.
主要成果:
- 在含有水的二元溶剂混合物中观察到上转换的排放,从而诱导了烯聚合.
- 在干燥有机溶剂中没有检测到上转换的排放.
- 通过三重传感器的存在,上转换效率得到了提高.
- 在聚合物纳米粒子中成功证明了iPUC,这表明纳米粒子内存在水域有助于烯聚合.
- 该研究在相对简单的系统中实现了光向上转换,尽管整体效率低.
结论:
- 水诱导的烯聚合对于基于三倍三倍灭绝的光子向上转换至关重要.
- 聚合物纳米粒子可以作为iPUC的矩阵,利用内部水域.
- 这项工作介绍了在可访问的分子和材料系统中实现iPUC的基础方法.
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