Acta Chimica Sinica ›› 2020, Vol. 78 ›› Issue (1): 23-33.DOI: 10.6023/A19110407 Previous Articles     Next Articles



马云a,b, 陈可欣b, 郭则灵a,c, 刘淑娟b, 赵强b, 黄维扬a,c   

  1. a 香港理工大学应用生物及化学科技学系 香港;
    b 南京邮电大学有机电子与信息显示国家重点实验室培育基地 信息材料与纳米技术研究院 南京 210023;
    c 香港理工大学深圳研究院 深圳 518057
  • 投稿日期:2019-11-15 发布日期:2019-12-19
  • 通讯作者: 赵强, 黄维扬;
  • 作者简介:马云,副教授,于2012年在南京邮电大学获得硕士学位,2015年在香港浸会大学获得博士学位.2016年加入南京邮电大学信息材料与纳米技术研究院,研究兴趣主要为发展刺激响应型光功能材料用于不同的光电领域;赵强,教授,于2007年在复旦大学获得博士学位,之后在日本名古屋大学从事博士后研究.2008年加入南京邮电大学信息材料与纳米技术研究院,主要从事有机及柔性光电子领域的研究,重点围绕高性能有机半导体的结构设计、性能调控及其在光电器件和生物医学领域的应用开展了系统性和创新性的研究工作;黄维扬,教授,1995在香港大学化学系获哲学博士学位,1996在美国德州农工大学从事博士后研究工作,1997年,在英国剑桥大学从事博士后研究工作.1998~2016于香港浸会大学任教,随后加入香港理工大学.长期专注于无机化学中金属有机聚合物/配合物的设计、合成及其光电应用等领域的基础与应用研究,在新材料的制备、结构性能调控和构效关系等方面取得了系列创新性成果.
  • 基金资助:

Phosphorescent Soft Salt Complexes for Optoelectronic Applications

Ma Yuna,b, Chen Kexinb, Guo Zelinga,c, Liu Shujuanb, Zhao Qiangb, Wong Wai-Yeunga,c   

  1. a Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hong Kong, China;
    b Key Laboratory for Organic Electronics and Information Displays and Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, Nanjing 210023, China;
    c The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen 518057, China
  • Received:2019-11-15 Published:2019-12-19
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Nos. 51873176, 21701087, 61825503), the Hong Kong Research Grants Council (PolyU 153062/18P and C6009-17G), the Hong Kong Polytechnic University (1-ZE1C) and Ms Clarea Au for the Endowed Professorship in Energy (847S).

Phosphorescent ion-paired complexes, which consist of two oppositely charged transition metal complexes with excellent photophysical properties, are called "soft salts" because of the soft nature of the ions. In recent decades, phosphorescent soft salt complexes have gained an increasing attention and this review aims to summarize the syntheses and photophysical properties of those complexes, and recent advances of them in different optoelectronic applications. Generally, phosphorescent soft salt complexes are synthesized via salt metathesis reactions between two oppositely charged organometallic components. By changing the chemical structure of ligands or the metal centers of the different ionic complexes, the photophysical properties of soft salt complexes can be easily regulated. Moreover, most of the soft salt complexes show concentration-dependent photoluminescence (PL) spectra due to the energy transfer between positive and negative ions. Thus, white light emission can be obtained by dissolving ion-paired complex consisting of two ionic components with blue and yellow emission in solution at certain concentration. Considering the excellent photophysical properties and easy tunability of phosphorescent soft salt complexes, the application of them in diverse optoelectronic fields, such as organic light emitting diodes, bioimaging, photodynamic therapy, electrochromic luminescence devices, and so on, have been explored. For example, Thompson and co-workers utilized iridium(III) complexes based phosphorescent soft salts to fabricate organic light emitting diodes for the first time. Our group have first developed soft salts based phosphorescent probes for ratiometric and lifetime imaging of pH and oxygen changes in living cells. In addition, we have found that soft salt complexes showed an enhanced singlet oxygen generation rate due to the efficient energy transfer between two ionic components, which has great potential to act as a photosensitizer for photodynamic therapy of cancer cells. Huang and co-workers have proposed a new strategy to design electrochromic luminescence materials based on soft salt complexes, which display tunable and reversible electrochromic luminescence. In summary, phosphorescent soft salt complexes possessing excellent photophysical properties show great potential in diverse optoelectronic applications.

Key words: soft salt complex, electrostatic interaction, phosphorescence, photophysical property, optoelectronic application