Acta Chimica Sinica ›› 2021, Vol. 79 ›› Issue (5): 575-587.DOI: 10.6023/A21010029 Previous Articles     Next Articles

Review

聚集态分子排列对光电性能的影响

王金凤a, 李振a,b,c,*()   

  1. a 天津大学 分子聚集态科学研究院 天津 300072
    b 武汉大学化学与分子科学学院 武汉 430072
    c 天津大学-新加坡国立大学福州联合学院 福州 350207
  • 投稿日期:2021-01-28 发布日期:2021-03-19
  • 通讯作者: 李振
  • 作者简介:

    王金凤, 湖北黄冈人, 博士研究生, 天津大学工程师, 2019年于武汉大学获得理学博士学位, 主要从事染料敏化太阳能电池、室温磷光和力致发光相关研究.

    李振, 湖北孝感人, 教授, 国家杰出青年科学基金获得者, “科技部中青年科技创新领军人才计划”入选者, 国家“万人计划”入选者, 英国皇家化学会会士(Fellow of RSC). 1997年于武汉大学化学系获理学学士学位, 2002年于武汉大学化学学院获理学博士学位. 研究方向为有机、高分子光电功能材料化学. 研究对象主要为有机共轭体系和功能高分子, 研究范围涉及二阶非线性光学、有机室温磷光、力致发光、聚集诱导发光、传感器、太阳能电池、磁性纳米材料等.

  • 基金资助:
    项目受天津大学启动基金资助

Significant Influence of Molecular Packing in Aggregates on Optoelectronic Properties

Jinfeng Wanga, Zhen Lia,b,c,*()   

  1. a Institute of Molecular Aggregation Science, Tianjin University, Tianjin 300072, China
    b College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
    c Joint School of National University of Singapore and Tianjin University, Fuzhou 350207, China
  • Received:2021-01-28 Published:2021-03-19
  • Contact: Zhen Li
  • About author:
  • Supported by:
    Starting Foundation of Tianjin University

Organic materials based on small molecules are aggregates that composed of many molecules. Their properties are not only determined by the spatial configuration and electronic properties of individual molecule, but also closely related to the molecular packing modes and the intermolecular interactions in the aggregates. In the realm of organic molecules, the macroscopic performance of molecular aggregates is not just the simple superposition of single molecules, but often display overall differential response of aggregates, namely, distinct properties can be created by molecular uniting with particular packing modes. Therefore, molecular aggregation science has gradually appeared in scientific research and drawn much attention in recent years. With the continuous and serious exploration of molecular aggregation science, especially the in-depth study of the molecular packing modes and intermolecular interactions of organic molecules in the solid state, it is found that the luminescence based on aggregation state is completely different from the characteristics of individual molecule, including the emission intensity and color, emission type, and even the excitation process, which could be realized by regulating molecular aggregation behavior. In addition, the morphology and dimensions of the aggregates can also be adjusted to achieve excellent performances of optoelectronic devices. This review will introduce the important influence of the arrangement of aggregated molecules on mechanochromism, room temperature phosphorescence, mechanoluminescence and organic field effect transistors, and further elaborate the importance of the molecular packing, providing some guidance for regulating molecular packing mode and targeted design and development of high-performance optoelectronic materials.

Key words: molecular packing, mechanochromism, room temperature phosphorescence, mechanoluminescence, organic field effect transistor