中国物理B ›› 2025, Vol. 34 ›› Issue (8): 87801-087801.doi: 10.1088/1674-1056/add679

所属专题： SPECIAL TOPIC — Structures and properties of materials under high pressure

• • 上一篇    下一篇

Pressure dependent excited state dynamics behavior in CzCNDSB

Guang-Jing Hou(侯广静)1, Ting-Ting Wang(王亭亭)1, Cun-Fang Feng(冯存方)2, Hong-Yu Tu(屠宏宇)1, Yu Zhang(张宇)1, Fang-Fei Li(李芳菲)1, Ying-Hui Wang(王英惠)1, Ping Lu(路萍)3,†, Tian Cui(崔田)4,‡, and Ling-Yun Pan(潘凌云)1,§   

  1. 1 State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China;
    2 College of Chemistry, Jilin University, Changchun 130012, China;
    3 State Key Laboratory of Supramolecular Structure and Materials, Department of Chemistry, Jilin University, Changchun 130012, China;
    4 School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
  • 收稿日期:2025-03-13 修回日期:2025-05-07 接受日期:2025-05-09 出版日期:2025-07-17 发布日期:2025-08-08
  • 通讯作者: Ping Lu, Tian Cui, Ling-Yun Pan E-mail:ply@jlu.edu.cn;cuitian@nbu.edu.cn;lup@jlu.edu.cn
  • 基金资助:
    This project was supported by the National Key Research and Development Program of China (Grant Nos. 2018YFA0305900 and 2017YFA0403704), the National Natural Science Foundation of China (Grant Nos. 61575079, 51632002, 11804113, and 51720105007), and the Natural Science Foundation of Jilin Province, China (Grant No. 20180101230JC).

Pressure dependent excited state dynamics behavior in CzCNDSB

Guang-Jing Hou(侯广静)1, Ting-Ting Wang(王亭亭)1, Cun-Fang Feng(冯存方)2, Hong-Yu Tu(屠宏宇)1, Yu Zhang(张宇)1, Fang-Fei Li(李芳菲)1, Ying-Hui Wang(王英惠)1, Ping Lu(路萍)3,†, Tian Cui(崔田)4,‡, and Ling-Yun Pan(潘凌云)1,§   

  1. 1 State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China;
    2 College of Chemistry, Jilin University, Changchun 130012, China;
    3 State Key Laboratory of Supramolecular Structure and Materials, Department of Chemistry, Jilin University, Changchun 130012, China;
    4 School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
  • Received:2025-03-13 Revised:2025-05-07 Accepted:2025-05-09 Online:2025-07-17 Published:2025-08-08
  • Contact: Ping Lu, Tian Cui, Ling-Yun Pan E-mail:ply@jlu.edu.cn;cuitian@nbu.edu.cn;lup@jlu.edu.cn
  • Supported by:
    This project was supported by the National Key Research and Development Program of China (Grant Nos. 2018YFA0305900 and 2017YFA0403704), the National Natural Science Foundation of China (Grant Nos. 61575079, 51632002, 11804113, and 51720105007), and the Natural Science Foundation of Jilin Province, China (Grant No. 20180101230JC).

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摘要： High pressure can alter the properties of matter and modulate the excited-state relaxation behavior of materials without chemical intervention. In this study, high pressure was combined with steady-state absorption and fluorescence spectroscopy, as well as transient spectroscopy techniques, to investigate its effect on the optical properties of the stimuli-responsive material (2Z,2$'$Z)-2,2$'$-(1,4-phenylene)bis(3-(4-(9H-carbazol-9-yl)phenyl)acrylonitrile) (CzCNDSB). With increasing pressure, the steady-state absorption and fluorescence peaks of CzCNDSB crystals exhibit red shifts, which are fully reversible. At the same time, pressure causes the molecules to pack more closely, leading to an increase in both the number and energy of multiplet self-trapped state, while the energy of local excited state decreases. The steady-state and transient results provide information on electronic energy levels, excited-state dynamics, and other properties of CzCNDSB, which show strong pressure dependence. These findings highlight the potential of CzCNDSB for practical applications such as photodetectors and solar energy conversion.

关键词: high pressure, CzCNDSB, transient absorption, stimuli-response

Abstract: High pressure can alter the properties of matter and modulate the excited-state relaxation behavior of materials without chemical intervention. In this study, high pressure was combined with steady-state absorption and fluorescence spectroscopy, as well as transient spectroscopy techniques, to investigate its effect on the optical properties of the stimuli-responsive material (2Z,2$'$Z)-2,2$'$-(1,4-phenylene)bis(3-(4-(9H-carbazol-9-yl)phenyl)acrylonitrile) (CzCNDSB). With increasing pressure, the steady-state absorption and fluorescence peaks of CzCNDSB crystals exhibit red shifts, which are fully reversible. At the same time, pressure causes the molecules to pack more closely, leading to an increase in both the number and energy of multiplet self-trapped state, while the energy of local excited state decreases. The steady-state and transient results provide information on electronic energy levels, excited-state dynamics, and other properties of CzCNDSB, which show strong pressure dependence. These findings highlight the potential of CzCNDSB for practical applications such as photodetectors and solar energy conversion.

Key words: high pressure, CzCNDSB, transient absorption, stimuli-response

中图分类号:  (Transient absorption)

  • 78.47.jb
87.15.ht (Ultrafast dynamics; charge transfer) 62.50.-p (High-pressure effects in solids and liquids) 82.53.-k (Femtochemistry)