Chem. J. Chinese Universities ›› 2026, Vol. 47 ›› Issue (5): 20260075.doi: 10.7503/cjcu20260075

• Article • Previous Articles     Next Articles

Template for Delayed Fluorescence Based on Clusteroluminescence

YUAN Letian, GUO Jiachen, WU Tongyue, GAO Shuitao, HUANG Jianbin, YAN Yun()   

  1. Beijing National Laboratory for Molecular Sciences (BNLMS),College of Chemistry and Molecular Engineering,Peking University,Beijing 100871,China
  • Received:2026-02-08 Online:2026-05-10 Published:2026-04-09
  • Contact: YAN Yun E-mail:yunyan@pku.edu.cn
  • Supported by:
    the Key Project of the National Natural Science Foundation of China(22332001)

Abstract:

A clusteroluminescent material serving as a “delayed fluorescence template” was constructed via pressure-induced electrostatic assembly. Bulk materials were formed through the electrostatic complexation of anionic polyacrylamide(APAM) and polyhexamethylene biguanide hydrochloride(PHMB). Within this matrix, guanidyl, carboxylate, and amide groups are tightly interconnected via electrostatic and hydrogen bonding interactions, facilitating clusteroluminescence through through-space interactions. Notably, the embedded fluorescent dyes interact with either polymer component through electrostatic or polarization effects. Consequently, upon the incorporation of various dyes, the material exhibits delayed fluorescence, effectively acting as a template that activates this property in diverse fluorophores. By embedding distinct dyes, dynamic phosphorescent anti-counterfeiting applications are realized. This work provides a novel strategy and platform for the realization and application of delayed fluorescence.

Key words: Delayed fluorescence, Clusteroluminescence, Phosphorescence resonance energy transfer

CLC Number: 

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