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DynamicPhosphorescence/Fluorescence Switching inHybrid Metal HalidesToward Time-ResolvedMulti-LevelAnti-Counterfeiting Zhou GuojunMao YilinZhang Jian2024 год

Dynamic Phosphorescence/Fluorescence Switching in Hybrid Metal Halides Toward Time-Resolved Multi-Level Anti-Counterfeiting
статья из журнала

Дополнительные ссылки: eLibrary
База данных: Каталог библиотеки СФУ
Библиографическое описание: Dynamic Phosphorescence/Fluorescence Switching in Hybrid Metal Halides Toward Time-Resolved Multi-Level Anti-Counterfeiting : научное издание / G. G. Zhou [et al.]. - Текст : непосредственный // Advanced Functional Materials. - 2024. - № . - ISSN 1616-301X. - ISSN 1616-3028, DOI 10.1002/adfm.202413524.
Аннотация: <jats:title>Abstract</jats:title><jats:p>Hybrid metal halides (HMHs) with time-resolved luminescence behavior promise to be a breakthrough in multi-level anti-counterfeiting, but controlling the dynamic switching between phosphorescence and fluorescence is extremely challenging. Herein, an array of 0D HMHs is constructed by screening the <jats:italic>π</jats:italic>-conjugated ligand with room-temperature phosphorescence (RTP). Compared to the organic chromophore, (ETPP)<jats:sub>2</jats:sub>ZrCl<jats:sub>6</jats:sub> possesses a misaligned stacking and rigid structure, contributing to an improved phosphorescence quantum yield (Φ<jats:sub>P</jats:sub> = 27.50%) and an extended phosphorescence lifetime (<jats:italic>τ</jats:italic> = 0.6234 s), as the intervening of inorganic unit [ZrCl<jats:sub>6</jats:sub>]<jats:sup>2−</jats:sup> suppresses the energy losses caused by nonradiative relaxation and prompts the intersystem crossover (ISC) process. Not only that, the interplay of phosphorescence-fluorescence dual-mode emission can be intelligently controlled by doping the active metal Te<jats:sup>4+</jats:sup>, resulting in a dynamic switching between RTP phosphorescence and self-trapped exciton (STE) fluorescence. DFT calculations reveal the governing origins of RTP-STE from the intermolecular ISC channels and spin-orbit coupling (SOC) coefficients. These precise images into periodic pixelated arrays enable the multi-level anti-counterfeiting and information encryption. This work proposes a fluorescence-phosphorescence co-modulating strategy under the premise of dissecting the structural origins for optimizing RTP phosphorescence, which paves the way for designing high-security-level anti-counterfeiting materials.</jats:p>
Год издания: 2024
Авторы: Zhou Guojun , Mao Yilin , Zhang Jian , Ren Qiqiong , Molokeev Maxim S. , Xia Zhiguo , Zhang Xian-Ming
Издательство: Wiley Interscience, Weinheim
Источник: Advanced Functional Materials
Держатель оригинала документа: College of Chemistry & Chemical Engineering Key Laboratory of Interface Science and Engineering in Advanced Material Taiyuan University of Technology Taiyuan Shanxi 030024 P. R. China, Department of Physics and Technical Sciences Western Caspian University Baku AZ 1001 Azerbaijan, Key Laboratory of Magnetic Molecules and Magnetic Information Materials (Ministry of Education) School of Chemistry and Material Science Shanxi Normal University Taiyuan 030031 P. R. China, Laboratory of Crystal Physics Kirensky Institute of Physics Federal Research Center KSC SB RAS Krasnoyarsk 660036 Russia, School of Physics and Optoelectronics South China University of Technology Guangzhou 510641 P. R. China, State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices School of Materials Science and Engineering South China University of Technology Guangzhou 510641 P. R. China
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