4.7 Article

Indole Carbonized Polymer Dots Boost Full-Color Emission by Regulating Surface State

期刊

ISCIENCE
卷 23, 期 10, 页码 -

出版社

CELL PRESS
DOI: 10.1016/j.isci.2020.101546

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资金

  1. Fundamental Research Funds for the Central Universities [XDJK2019B001]
  2. National Natural Science Foundation of China [21535006]
  3. Institute of translational medicine
  4. First Hospital of Jilin University

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Carbonized polymer dots (CPDs) are impressive imaging probes with great potential for enriching the library of metal-free fluorescent materials, yet current strategies have struggled to achieve products that emit full-color light in a single reaction system. Establishing an efficient and robust synthesis approach that unlocks the color barrier to the luminescence centers of specific CPDs remains a challenge. Herein, the surface-state engineering of pyridine and amide in the indole system to create a palette of resolvable full-color light-emissive CPDs is reported. Detailed structural analysis revealed that cationic polymerization and oxidation reactions potentially contribute to the formation of the main frameworks and emission centers of the final CPDs, with emissive oxygen- and nitrogen-based centers fixed by cross-linked polymer structures. This study provides valuable insight into the energy absorbance and photoluminescence mechanism of CPDs and introduces additional reactants (benzo heterocycle) into CPD research.

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