Energy Transfer‐Assisted Color Conversion of Persistent Mechanoluminescence in RhB@SiO2/SrAl2O4:Eu,Dy System for Multilevel Information Encryption

Author:

Deng Yuan1,Peng Danni1,Shen Cheng‐Long1ORCID,Sun Junlu1,Zheng Guangsong1,Chang Shulong1,Liang Yachuan2,He Jun3,Shan Chong‐Xin1,Dong Lin1ORCID

Affiliation:

1. Henan Key Laboratory of Diamond Optoelectronic Materials and Devices Key Laboratory of Material Physics Ministry of Education School of Physics and Laboratory of Zhongyuan Light Zhengzhou University Zhengzhou 450052 China

2. School of Electronics and Information Zhengzhou University of Light Industry Zhengzhou 450002 China

3. Key Laboratory of Artificial Micro‐ and Nano‐Structures of Ministry of Education School of Physics and Technology Wuhan University Wuhan 430072 China

Abstract

AbstractPersistent mechanoluminescence (PML) is highly desirable for its ability to overcome transient‐emitting behavior, but its applications are hindered by the limited emission wavelengths. Herein, a universal chemical interlinkage‐assisted efficient energy transfer (ET) strategy is introduced to achieve color conversion from green to red in traditional PML materials. A straightforward chemical route to create the RhB@SiO2/SAOED system is established via covalent chemical interlinkage by depositing mesoporous silica‐encapsulated Rhodamine B (RhB) nanoparticles (RhB@SiO2) onto SrAl2O4:Eu, Dy (SAOED) particles. The resulting system exhibits a high ET efficiency of 53.5%. The multicolor PML of the RhB@SiO2/SAOED system remains visible to the naked eye for exceeding 28 s after mechanical stimulation. With this unique PML behavior, the RhB@SiO2/SAOED system demonstrates the potential applications ranging from visualized reading activities to multi‐mode anticounterfeiting. This universal PML color‐conversion strategy provides a new approach to high‐performance mechanical light energy‐conversion systems and may further inspire more diverse functional applications of classical PML materials.

Funder

National Key Research and Development Program of China

National Natural Science Foundation of China

China Postdoctoral Science Foundation

Publisher

Wiley

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