Paramagnetic defects and photobleaching effects of polymer PCDTBT thin films with the admixtures of fullerene PCBM, beta-carotene and fluorinated carbon nanotubes

IF 2.8 3区化学 Q3 CHEMISTRY, PHYSICAL

Chemical Physics Letters Pub Date : 2024-10-20 DOI:10.1016/j.cplett.2024.141698

Natalia V. Kravets , Leonid V. Kulik , Vladimir A. Zinovyev , Mikhail N. Uvarov

引用次数: 0

Abstract

The influence of the additives to the thin film of the semiconducting polymer PCDTBT on the kinetics of its photooxidation in air was revealed through changes in the UV–vis absorption spectra and the EPR spectra of the paramagnetic defects. These defects appeared in the initial stage of the PCDTBT photooxidation, and the kinetics of their generation and decay reflected the impact of the additives on PCDTBT stability. While a small amount of PCBM and beta-carotene resulted in the accelerated photooxidation, the addition of fluorinated carbon nanotubes stabilized PCDTBT.

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富勒烯 PCBM、β-胡萝卜素和氟化碳纳米管混合聚合物 PCDTBT 薄膜的顺磁缺陷和光漂白效应

通过顺磁缺陷的紫外-可见吸收光谱和 EPR 光谱的变化，揭示了半导体聚合物 PCDTBT 薄膜添加剂对其在空气中光氧化动力学的影响。这些缺陷出现在 PCDTBT 光氧化的初始阶段，其生成和衰减动力学反映了添加剂对 PCDTBT 稳定性的影响。少量 PCBM 和 beta-胡萝卜素会加速光氧化，而添加氟化碳纳米管则会稳定 PCDTBT。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.