离子液体[Bmim][BF<sub>4</sub>]中卟啉的三线态动力学

引用本文: 马仁君, 郭前进, 李博轩, 夏安东. 离子液体[Bmim][BF₄]中卟啉的三线态动力学[J]. 物理化学学报, 2017, 33(11): 2191-2198. doi: 10.3866/PKU.WHXB201705242 shu

Citation: MA Ren-Jun, GUO Qian-Jin, LI Bo-Xuan, XIA An-Dong. Triplet Excited State Dynamics of Porphyrin in Ionic Liquid [Bmim][BF₄][J]. Acta Physico-Chimica Sinica, 2017, 33(11): 2191-2198. doi: 10.3866/PKU.WHXB201705242 shu

离子液体[Bmim][BF₄]中卟啉的三线态动力学

1.
中国科学院化学研究所, 北京分子科学国家实验室, 光化学重点实验室, 北京 100190;
2.
中国科学院大学, 北京 100049
基金项目:
国家自然科学基金（21333012，21673252，21373232）资助项目

摘要: 室温离子液体由于其几乎不挥发、稳定性突出、良好的电化学性能以及结构与性能的可设计性等优点，在诸多领域得到了深入的研究和广泛的应用。与传统的普通溶剂不同，离子液体的本质特点之一是其内部的微观结构具有微不均匀性。本文通过对四苯基卟啉（TPP）分子在离子液体[Bmim][BF₄]中的三线态动力学研究，发现在激光作用下，TPP的三线态寿命由2.95 μs显著增加到184 μs。进一步分析表明，这一现象很可能是由于离子液体的微结构在激光诱导下发生变化，被激光场或者离子诱导极化的氧气分子在离子液体微不均匀性环境中发生重新分布而引起的。

关键词:

English

Triplet Excited State Dynamics of Porphyrin in Ionic Liquid [Bmim][BF₄]

1.
Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China;
2.
University of Chinese Academy of Sciences, Beijing 100049, P. R. China
Received Date: 04 May 2017
Revised Date: 17 May 2017
Fund Project:
The project was supported by the National Natural Science Foundation of China (21333012, 21673252, 21373232).

Abstract: Room temperature ionic liquids (RTILs) have been extensively studied with various applications owing to their non-volatility, excellent stability, good electrochemical properties and they can be easily manipulated by designing an appropriate structure and property. They differ from conventional solvents in that they have structural heterogeneity, which is one of the most essential natures of RTILs. In this work, the triplet excited state dynamics of meso-tetraphenylporphyrin (TPP) in the ionic liquid [Bmim][BF₄] were studied, and it was observed that the triplet state lifetime of TPP increases remarkably from 2.95 to 184 μs upon laser irradiation. These results of the dynamics of TPP triplet excited state are probably caused by the laser-induced microstructure changes of the ionic liquid, and the redistribution of oxygen molecules polarized by the external laser field and/or the ions in the heterogeneous microenvironment of the ionic liquid upon laser irradiation.

Key words:

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

离子液体[Bmim][BF₄]中卟啉的三线态动力学

English

Triplet Excited State Dynamics of Porphyrin in Ionic Liquid [Bmim][BF₄]

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

离子液体[Bmim][BF4]中卟啉的三线态动力学

English

Triplet Excited State Dynamics of Porphyrin in Ionic Liquid [Bmim][BF4]

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

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CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

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