Opal‐Inspired SiO 2 ‐Mediated Carbon Dot Doping Enables the Synthesis of Monodisperse Multifunctional Afterglow Nanocomposites for Advanced Information Encryption
Year: 2024
Type: article
Abstract: Despite recent advancements in inorganic and organic phosphors, creating monodisperse afterglow nanocomposites (NCs) remains challenging due to the complexities of wet chemistry synthesis. Inspired by nanoinclusions in opal, we introduce a novel SiO 2 ‐mediated carbon dot (CD) doping method for fabricating monodisperse, multifunctional afterglow NCs. This method involves growing a SiO 2 shell matrix on monodisperse nanoparticles (NPs) and doping CDs into the SiO 2 shell under hydrothermal conditions. Our approach preserves the monodispersity of the parent NP@SiO 2 NCs while activating a green afterglow in the doped CDs with an impressive lifetime of 1.26 s. Additionally, this method is highly versatile, allowing for various core and dopant combinations to finely tune the afterglow through core‐to‐CD or CD‐to‐dye energy transfer. Our findings significantly enhance the potential of SiO 2 coatings, transforming them from merely enhancing the biocompatibility of NCs to serving as a versatile matrix for emitters, facilitating afterglow generation and paving the way for new applications.
Authors: Shuaimeng Guan, Xue Chen, Rui Yu, Weidong Xu, Zhongbin Wu, Yung Doug Suh, Xiaowang Liu, Wei Huang
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4402514639