Chem. J. Chinese Universities ›› 2026, Vol. 47 ›› Issue (1): 20250325.doi: 10.7503/cjcu20250325

• Article • Previous Articles     Next Articles

Influence of Average Functionality of Precursors and Crosslink-enhanced Emission Effect on Solid-state Luminescence Performance of Carbonized Polymer Dots

LI Rui, LIU Junjun, TAO Songyuan, ZHU Zhicheng, YANG Bai()   

  1. State Key Laboratory of Supramolecular Structure and Materials,College of Chemistry,Jilin University,Changchun 130012,China
  • Received:2025-10-31 Online:2026-01-10 Published:2025-12-06
  • Contact: YANG Bai E-mail:byangchem@jlu.edu.cn
  • Supported by:
    the Natural Science Foundation of Jilin Province, China(No.***202402011)

Abstract:

Carbonized polymer dots(CPDs), as an important branch of carbon dots, have demonstrated remarkable performance and processing and molding advantages in the field of solid-state luminescent materials due to their unique sub-fluorescent groups and polymer-like structures. Specifically, the sub-fluorescent groups in the shell of CPDs avoid the generation of π-π interactions due to the presence of polymer components, thereby effectively suppressing the quenching caused by aggregation. Therefore, CPDs are ideal and highly efficient solid-state luminescent materials with development potential. To achieve efficient solid-state luminescence of CPDs, a series of CPDs was prepared using linear polyacrylic acid and organic small molecules of different functionalities as co-precursors through a hydrothermal process. The polymer molecular chain on the outer layer of CPDs isolates and disperses the fluorescence center, effectively suppressing the aggregation-caused quenching effect and ensuring the solid-state luminescence performance. Based on the crosslink-enhanced emission effect, the influence of the average functionality of co-precursors on the luminescence performance of CPDs was systematically studied. The results show that with the increase of the functionality and crosslinking degree of the precursors, the fluorescence quantum yield and

room-temperature phosphorescence lifetime of CPDs are significantly enhanced, effectively improving the solid-state luminescence performance.

Key words: Carbonized polymer dots, Carbon dots, Solid-state luminescence, Crosslink-enhanced emission effect, Functionality of precursor

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