新型有机发光材料的设计合成及其刺激发光响应机制研究

Stimuli-responsive luminescent materials are an important class of smart materials whose luminescent properties are intelligently changed in response to external stimuli. They have a wide variety of applications in anti-counterfeit, sensing systems and information storage, and so on. The research project is planned to systemically and thoroughly study on the external stimuli-responsive properties of the new kinds of luminescent materials, elucidate their stimuli-responsive mechanisms, get the internal relationship and rules, and explore their applications. The research plan identifies three priority research areas, including: 1) design and synthesis of new kinds of luminescent materials based on dual emission (fluorescence-phosphorescence, fluorescence-thermally activated delayed fluorescence, and fluorescence-long afterglow), systematic investigation on the relationships between molecular structures and properties, and the exploration of their emissive mechanisms; 2) systematic investigation of their stimuli-responsive mechanisms; 3) on the basis of a complete analysis and explanation of the relationship of molecular structure, aggregation structure and stimuli-responsive luminescent properties, we will further carry out the applied research of the smart materials in the fields of anti-counterfeit, sensing systems, information storage, and so on. Through this research project, we will lay a solid practical and theoretical basis for development of the new smart materials with multi-stimuli-responsive and wide variation of wavelength natures in the future. Through this study, we hope to provide theoretical bases and new strategies for new kinds of stimuli-responsive luminescent smart materials, and lay a solid foundation for their practical applications through significant breakthrough in application study.

刺激响应有机发光材料是一类对外界刺激产生发光响应的智能材料。本项目拟在设计合成新型有机发光材料基础上，系统深入地研究这类材料对力、光和热等外界刺激的发光响应，阐明它们的刺激发光响应机制，总结它们内在的关系规律，并探索它们的应用。研究重点包括：1）设计合成基于荧光-磷光双发射、荧光-热激活延迟荧光双发射、荧光-长余辉双发射、力刺激荧光-磷光双发射直接发光等新型有机发光分子，系统地研究其分子结构与性能的关系规律；2）深入研究上述新型有机发光材料的外界刺激发光响应机制；3）在上述研究基础上，进一步深入开展这些材料在商标防伪、刺激响应传感和光信息存储等领域中的应用研究。通过本项目的研究，为设计合成具有多重刺激发光响应且响应波长范围宽的新型有机发光智能材料打下良好的基础,为这类智能材料的研究提供理论基础和研究方法，以期在这类智能材料的应用研究方面取得重大突破，为这类智能材料的实际应用奠定良好的基础。

刺激响应性有机发光材料是指在光、电、力等外界刺激作用下有机发光材料的发光性能发生明显改变的一类智能材料。这类智能材料在信息加密防伪、传感、发光器件等领域具有重要的潜在应用。刺激响应性有机发光材料与器件的发展离不开有机发光材料的分子设计并进行系统性的分子结构与性能关系研究，了解其深层次的物理和化学问题。通过本项目的研究，在聚集诱导热激活延迟荧光双发射刺激响应及发光器件、有机长余辉双发射发光机制、有机发光材料的力致发光、有机发光材料的光致变色、以及柔性氢键有机框架（HOF）材料的刺激响应等方面都取得了很大的结果。多个研究成果在国内外具有重要影响，对相关研究起到重要的指导作用。到目前为止，已经发表标注本项目资助的期刊论文60篇，其中57篇论文的SCI影响因子大于3。影响因子大于9的论文34篇。重要论文包括：1篇Chem、5篇Angew Chem Int Ed、2篇Nat Commun、2篇Adv Funct Mater、8篇Chem Sci、2篇CCS Chem、1篇Sci China Chem、2篇Chem Eng J、4篇Adv Optical Mater。上述60篇标注本项目资助的论文总共引用2316次，有2篇论文进入ESI高被引论文。项目执行期间授权中国专利12件，申请受理专利5件。参加国内国际学术会议12次，均获邀请报告。毕业博士生9名，毕业硕士生3名，在读博士生8名，在读硕士生2名。指导本科生毕业论文10名。培养出站博士后2名。项目执行期间，“新型有机发光材料的设计合成及其力刺激发光响应研究”获得2018年度广东省自然科学奖一等奖。项目负责人获得2021年广东省第十六届丁颖科技奖。项目负责人入围2021爱思唯尔“中国高被引学者”和2022科睿唯安“高被引科学家”榜单。项目组成员杨志涌和赵娟获得广东省杰出青年基金项目支持。与著名显示面板企业深圳市华星光电技术有限公司进行了良好的产学研合作。