TY - JOUR
T1 - Engineering particles for sensing applications via in-situ synthesizing carbon dots@SiO2 photonic crystals
AU - Yu, Xiao Qing
AU - Zhang, Xiaoying
AU - Qiu, Tongyue
AU - Liu, Huilong
AU - Guo, Jiazhuang
AU - Li, Qing
AU - Zhang, Zunmin
AU - Chen, Su
N1 - Publisher Copyright:
© 2023
PY - 2023/6/1
Y1 - 2023/6/1
N2 - Particle engineering has been one of the hotspots in both stimuli-responsive and smart nanomaterials. However, efficient and facile implementation of robust covalent interaction in particle engineering remains a great challenge. Herein, we firstly propose an easy-to-perform and versatile bottom-up particle engineering strategy for covalent coupling between SiO2 particle and carbon dots (CDs) in situ. Robust covalent interactions enable the nano-micro coupling of CDs and SiO2 particles, and nearly twofold fluorescence enhancement of CDs was obtained. Moreover, hydrogen bond-driven assembly of the carbon dots@SiO2 (CDs@SiO2) particles was demonstrated via molecular dynamics (MD) simulations, which guaranteed the high-quality colloidal photonic crystals (CPCs) without coffee ring effect. In addition, the optical coupling between CPCs and CDs ensures brighter and more saturated structural colors, as well as enhanced fluorescence for microfluidics-derived bi-optical CDs@SiO2 CPC supraballs. Based on this, bi-optical signal detection chip towards veterinary drug is developed. The in-situ covalent coupling strategy developed in this work might open an innovative avenue towards the particle engineering, which will also provide a methodological reference for the design of functional inorganic particles.
AB - Particle engineering has been one of the hotspots in both stimuli-responsive and smart nanomaterials. However, efficient and facile implementation of robust covalent interaction in particle engineering remains a great challenge. Herein, we firstly propose an easy-to-perform and versatile bottom-up particle engineering strategy for covalent coupling between SiO2 particle and carbon dots (CDs) in situ. Robust covalent interactions enable the nano-micro coupling of CDs and SiO2 particles, and nearly twofold fluorescence enhancement of CDs was obtained. Moreover, hydrogen bond-driven assembly of the carbon dots@SiO2 (CDs@SiO2) particles was demonstrated via molecular dynamics (MD) simulations, which guaranteed the high-quality colloidal photonic crystals (CPCs) without coffee ring effect. In addition, the optical coupling between CPCs and CDs ensures brighter and more saturated structural colors, as well as enhanced fluorescence for microfluidics-derived bi-optical CDs@SiO2 CPC supraballs. Based on this, bi-optical signal detection chip towards veterinary drug is developed. The in-situ covalent coupling strategy developed in this work might open an innovative avenue towards the particle engineering, which will also provide a methodological reference for the design of functional inorganic particles.
KW - Carbon dots
KW - Dual-signal detection
KW - Microfluidics
KW - Particle engineering
KW - SiO photonic crystals
UR - http://www.scopus.com/inward/record.url?scp=85152471385&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2023.142851
DO - 10.1016/j.cej.2023.142851
M3 - 文章
AN - SCOPUS:85152471385
SN - 1385-8947
VL - 465
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
M1 - 142851
ER -