摘要
单一分子发色团的多模式/多波长发光,能够规避因多种发色团混制带来的不同批次样品的发光性质误差,具有更好的应用前景和更广的应用范围。为了实现单一分子发色团的多重发光模式,一方面可以从经典的、具有反卡莎规则发光性质的分子出发,在此基础上进行结构修饰和改性设计;另一方面,利用氢键作用、超分子作用力等非共价键对分子发色团的单线态-三线态能级进行调控,也是主要的分子设计和构建思路。本文总结了近几年来报道的性能较优的、具有多重发光模式和多重刺激响应的单一分子发色团体系,例举了包括通过分子设计来调控高激发态-低激发态与单线态-三线态的能级差带来的多重发光性质的研究;同时赋以通过不同外部刺激来改变分子间作用的实例,展示了调控发射光信号的强度和比率等研究成果;并对单一分子发色团的多重发光调控行为在功能材料等方面的应用做出了展望。
The multi-mode/multi-wavelength photoluminescence from a single chromophore can avoid the error of emission properties,which is easily generated from different batches of samples upon mixing of multiple chromophores.Thus,this photoluminescent behavior has better prospects and a wider range of applications.To achieve the multi-mode photoluminescence in a single chromophore,structural modifications from the classic molecules with anti-Kasha rule luminescence properties can be carried out.On the other hand,molecular design with the construction of hydrogen bonding,supramolecular force,and other non-covalent bonds to regulate the singlet-triplet energy level of the chromophores can also be valid.This paper reviewed some representative development and achievements reported in recent years,providing multi-mode luminescence properties by controlling high-low excitation states and singlet-triplet states.Meanwhile,it showed achievements about controlling intensity and ratio of luminescence by using different stimuli.It also made an outlook on applications in function materials about adjustment of multi-mode emissions of single chromophores.
作者
何田田
朱亮亮
HE Tiantian;ZHU Liangliang(State Key Laboratory of Molecular Engineering of Polymers,Department of Macromolecular Science,Fudan University,Shanghai 200438,China)
出处
《化学反应工程与工艺》
CAS
2023年第1期81-90,共10页
Chemical Reaction Engineering and Technology
基金
国家自然科学基金(22275038)。
关键词
单一分子发色团
多重发光模式
反卡莎规则
激发态
single chromophore
multi-mode photoluminescence
anti-Kasha’s rule
excited state
