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On the generality of dye incorporation in silica nanoparticles
Qingwu Yao1,2, Yuying Yang1, Xuejun Cheng2,3
1Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University Nanjing 211816 Jiangsu Province China ias_xyliu@njtech.edu.cn.
RSC Advances
|September 22, 2025
Abstract:
Doping dyes in silica has a wide range of applications, but there is currently no general method of synthesis. Here, we show that 98 cationic dyes of 11 series could be directly doped in silica nanoparticles of uniform size. In this co-precipitation method, the negatively charged silica precursor, poly(silicic acid), basically wraps the dyes as counter ions and preserves them.

