Acta Chim. Sinica ›› 2018, Vol. 76 ›› Issue (4): 246-258.DOI: 10.6023/A17110504 Previous Articles     Next Articles

Review

有机/金属有机力致发光材料的研究进展

刘明丽a,b, 吴琪b, 史慧芳b, 安众福b, 黄维a,b,c   

  1. a 内蒙古大学化学化工学院 呼和浩特 010021;
    b 南京工业大学 先进材料研究院 国家江苏先进生物与化学制造协同创新中心 江苏省柔性电子重点实验室 南京 211800;
    c 西北工业大学 陕西省柔性电子研究院 西安 710072
  • 收稿日期:2017-11-24 出版日期:2018-04-15 发布日期:2018-02-26
  • 通讯作者: 安众福, 黄维 E-mail:iamzfan@njtech.edu.cn;iamwhuang@njtech.edu.cn
  • 作者简介:刘明丽,目前主要研究工作为超长有机磷光材料与有机电致发光主体材料合成及性能研究;吴琪,目前主要研究工作为超长有机磷光材料与有机电致发光主体材料合成及性能研究;安众福,他的研究课题主要集中在有机电子器件,包括有机光电材料与器件,超长有机磷光材料及其应用;黄维,主要研究方向为柔性电子材料与器件、纳米材料和纳米技术等.
  • 基金资助:

    项目受中国国家基础研究973计划(No.2015CB932200)、国家自然科学基金(Nos.51673095和61505078)、江苏省自然科学基金(No.BK2015064)和江苏省“六产业高层次人才”(XCL-025)资助.

Progress of Research on Organic/Organometallic Mechanoluminescent Materials

Liu Minglia,b, Wu Qib, Shi Huifangb, An Zhongfub, Huang Weia,b,c   

  1. a College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021;
    b Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic, Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211800;
    c Shanxi Institute of Flexible Electronics, Northwestern Polytechnical University, Xi'an 710072
  • Received:2017-11-24 Online:2018-04-15 Published:2018-02-26
  • Contact: 10.6023/A17110504 E-mail:iamzfan@njtech.edu.cn;iamwhuang@njtech.edu.cn
  • Supported by:

    Project supported by the National Basic Research Program 973 of China (No. 2015CB932200), the National Natural Science Foundation of China (Nos. 51673095 and 61505078), the Natural Science Foundation of Jiangsu Province (No. BK2015064) and the "High-Level Talents in Six Industries" of Jiangsu Province (No. XCL-025).

Functional materials with unique properties or specific functions, have been developed greatly in the areas of information, aerospace, energy, biology and so forth. Recently, organic/organometallic mechanoluminescence (ML) has attracted considerable attention owing to its unique optical properties induced by external stimulus, which demonstrates great potential as a candidate for sensing of impact, stress, tension or pressure, display and lighting, as well as imaging. In this review, the recent progress on organic/organometallic ML materials, the relationship between molecular structures and properties, their luminescent mechanisms, as well as the applications are summarized. Currently, the organic/organometallic ML systems mainly contain small molecules, including organometallic complexes and pure organic compounds, and polymers. In comparison to the design and preparation of materials, the progress of underlying mechanisms still remains ambiguous without a universal acknowledgement. Up to now, it is generally accepted that organic/organometallic ML materials should have non-centrosymmetric molecular structures, dipolar structures and piezoelectric properties. Because when the crystals are stimulated under grinding, rubbing, cutting, cleaving, shaking, scratching, compressing, or crushing, the center asymmetric molecular structures of organic/organometallic materials are broken, resulting in disruption of the crystal and electronic discharge at the crack surface, then emitting obvious light from the surface of solids state. This organic ML mechanism is mainly derived from the mechanism of inorganic ML. Mechanisms of organic/organometallic ML materials need to be verified by further experiments and theoretical study. As to the mechanism of mechanically activated luminescence of pure organic polymers, it was reported that when the material was stimulated by mechanical forces, the excited state went back to the ground state and emitted light. This review will focus on the recent progress of organic/organometallic mechanoluminescent materials including rare-earth organometallic complex, transition organometallic complex, pure organic small molecule materials and pure organic polymer materials, and their mechanisms during the past decades. Finally, the challenges and the outlook of the organic/organometallic ML have been discussed.

Key words: mechanoluminescence, organometallic complex, piezoelectricity, center asymmetric molecular structure, molecular crystal engineering