Modulating luminescence and assembled shapes of ultrasmall Au nanoparticles towards hierarchical information encryption

Zhou, Tingyao; Jiang, Xingyu

2022-09-01

10.1039/d2sc04031j

Chemical Science   Impact Factor & Quartile

2041-6520

2041-6539

Because of their intriguing luminescence performances, ultrasmall Au nanoparticles (AuNPs) and their assemblies hold great potential in diverse applications, including information security. However, modulating luminescence and assembled shapes of ultrasmall AuNPs to achieve a high-security level of stored information is an enduring and significant challenge. Herein, we report a facile strategy using Pluronic F127 as an adaptive template for preparing Au nanoassemblies (AuNAs) with controllable structures and tunable luminescence to realize hierarchical information encryption through modulating excitation light. The template guided ultrasmall AuNP in situ growth in the inner core and assembled these ultrasmall AuNPs into intriguing necklace-like or spherical nanoarchitectures. By regulating the type of ligand and reductant, their emission was also tunable, ranging from green to the second near-infrared (NIR-II) region. The excitation-dependent emission could be shifted from red to NIR-II, and this significant shift was considerably distinct from the small range variation of conventional nanomaterials in the visible region. In virtue of tunable luminescence and controllable structures, we expanded their potential utility to hierarchical information encryption, and the true information could be decrypted in a two-step sequential manner by regulating excitation light. These findings provided a novel pathway for creating uniform nanomaterials with desired functions for potential applications in information security.

SCI ; EI

English

NI Journal Papers

First ; Corresponding

National Key Research and Development Program of China[2021YFF1200100] ; National Natural Science Foundation of China["21907032","81730051","32071390"] ; Shenzhen Science and Technology Program[KQTD20190929172743294] ; Shenzhen Key Laboratory of Smart Healthcare Engineering[ZDSYS20200811144003009] ; Guangdong Innovative and Entrepreneurial Research Team Program[2019ZT08Y191]

Chemistry

Chemistry, Multidisciplinary

WOS:000865426000001

ROYAL SOC CHEMISTRY

20224513056024

Cryptography ; Gold nanoparticles ; Infrared devices ; Light ; Luminescence

Data Processing and Image Processing:723.2 ; Light/Optics:741.1 ; Nanotechnology:761

Web of Science

Southern Univ Sci & Technol, Dept Biomed Engn, Shenzhen Key Lab Smart Healthcare Engn, 1088 Xueyuan Rd, Shenzhen 518055, Guangdong, Peoples R China

Zhou, Tingyao,Jiang, Xingyu. Modulating luminescence and assembled shapes of ultrasmall Au nanoparticles towards hierarchical information encryption[J]. Chemical Science,2022.

Zhou, Tingyao,&Jiang, Xingyu.(2022).Modulating luminescence and assembled shapes of ultrasmall Au nanoparticles towards hierarchical information encryption.Chemical Science.

Zhou, Tingyao,et al."Modulating luminescence and assembled shapes of ultrasmall Au nanoparticles towards hierarchical information encryption".Chemical Science (2022).