Tunable Fluorescence of Graphdiyne Quantum Dots by Enlarging π System and Altering Electronic Structure
- 1School of Pharmacy and Laboratory Medicine, Jiangsu Health Vocational College, Nanjing 211800, China
- 2School of Chemistry, Chemical Engineering & Biotechnology, Nanyang Technological University, Singapore 637371, Singapore
Abstract
Extending the fluorescence of graphdiyne quantum-dot-derived materials beyond the predominantly reported blue-to-green region may broaden their use in fluorescence imaging and sensing. To address this issue, modified graphdiyne quantum dots (M-GDQDs) with green, yellow, and red fluorescence were first obtained by classical hydrothermal and solvothermal methods. Experimental and theoretical studies have shown that the enlargement of the π system and the changes in electronic structures contributed to the red shift in the fluorescence emission wavelength, although the individual contributions of conjugation and surface chemistry could not be quantitatively separated. The prepared M-GDQDs exhibit wonderful optical properties, good water solubility and excellent biocompatibility, which are beneficial for bioimaging. This study not only enriches the types of graphdiyne quantum dots, but it can also be used for the construction of multichannel fluorescent biosensing platforms. We believe that the emergence of M-GDQDs offers promising application prospects in the fields of nanomedicine and disease-related biomarker analysis.
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BibTeX
@article{qiao2026tunable,
title = {{Tunable Fluorescence of Graphdiyne Quantum Dots by Enlarging π System and Altering Electronic Structure}},
author = {Ling Qiao and Wenchao Lang and Jia Luo and Xiaoqing Xu},
journal = {Molecules},
year = {2026},
month = nov,
doi = {10.3390/molecules31213998},
url = {https://www.mdpi.com/1420-3049/31/21/3998},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Tunable Fluorescence of Graphdiyne Quantum Dots by Enlarging π System and Altering Electronic Structure
AU - Ling Qiao
AU - Wenchao Lang
AU - Jia Luo
AU - Xiaoqing Xu
PY - 2026
DA - 2026/11/06
JO - Molecules
DO - 10.3390/molecules31213998
UR - https://www.mdpi.com/1420-3049/31/21/3998
AB - Extending the fluorescence of graphdiyne quantum-dot-derived materials beyond the predominantly reported blue-to-green region may broaden their use in fluorescence imaging and sensing. To address this issue, modified graphdiyne quantum dots (M-GDQDs) with green, yellow, and red fluorescence were first obtained by classical hydrothermal and solvothermal methods. Experimental and theoretical studies have shown that the enlargement of the π system and the changes in electronic structures contributed to the red shift in the fluorescence emission wavelength, although the individual contributions of conjugation and surface chemistry could not be quantitatively separated. The prepared M-GDQDs exhibit wonderful optical properties, good water solubility and excellent biocompatibility, which are beneficial for bioimaging. This study not only enriches the types of graphdiyne quantum dots, but it can also be used for the construction of multichannel fluorescent biosensing platforms. We believe that the emergence of M-GDQDs offers promising application prospects in the fields of nanomedicine and disease-related biomarker analysis.
SN - 1420-3049
ER -