用双发光亚胺化合物探测O2扩散在低温下精确检测非晶聚合物的局部弛豫。

IF 2.9 3区化学 Q3 CHEMISTRY, PHYSICAL

Soft Matter Pub Date : 2025-06-26 DOI:10.1039/d5sm00394f

Rika Watanabe, Marina Doi, Haonan Liu, Masatoshi Tokita, Shinji Ando

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引用次数: 0

摘要

在低温(2)扩散下，对六种非晶聚合物的局部弛豫（LR）进行了精确监测。分散在聚合物基体中的亚胺化合物的PH值被O2淬灭，PH值强度随温度的变化表明聚合物基体的γ-弛豫对O2的扩散起关键作用。该方法为在低温下检测非晶聚合物中的LR现象提供了一种新的分析工具。

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Precise detection of local relaxation of amorphous polymers at low temperatures via O₂ diffusion probed by a dual-luminescent imide compound.

Local relaxation (LR) of six types of amorphous polymers was precisely monitored at low temperatures (<160 K) using the intensity ratio of phosphorescence (PH) to fluorescence of a dual-luminescent imide compound as a probe for oxygen (O₂) diffusion. The PH of the imide compound dispersed in the polymer matrices was quenched by O₂, and the temperature-dependent variation of the PH intensity indicates that the γ-relaxation of the polymer matrix plays a crucial role in O₂ diffusion. This method offers a novel analytical tool for detecting LR phenomena in amorphous polymers at low temperatures.

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来源期刊

Soft Matter 工程技术-材料科学：综合

CiteScore

6.00

自引率

5.90%

发文量

891

审稿时长

1.9 months

期刊介绍： Soft Matter is an international journal published by the Royal Society of Chemistry using Engineering-Materials Science: A Synthesis as its research focus. It publishes original research articles, review articles, and synthesis articles related to this field, reporting the latest discoveries in the relevant theoretical, practical, and applied disciplines in a timely manner, and aims to promote the rapid exchange of scientific information in this subject area. The journal is an open access journal. The journal is an open access journal and has not been placed on the alert list in the last three years.