Manganese halides with timely and delayed reversible thermal fluorescence quenching for dual-secure information encryption and anti-counterfeiting

Li Cong, Longyun Lv, Ying Liu, Yuxin Jia, Xuerui Chang, Yufan Lin, Juan Li*, Bin Bin Cui

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

摘要

Mn (II)−based hybrid metal halides have become a promising class of optoelectronic materials due to their non-toxic, diverse molecular coordination, efficient photoluminescence and tunable emission wavelength. Three novel manganese halides TAMn2Cl5·2H2O, TA2MnBr4 and TMG2MnBr4 (TA = triethylamine, TMG = 1,1,3,3-tetramethylguanidine) were successfully prepared, exhibiting bright green light emission with the max emission at 525, 525 and 527 nm, with the photoluminescence quantum yields (PLQY) of 11.64 %, 89.61 % and 90.02 %, respectively. TAMn2Cl5·2H2O and TA2MnBr4 exhibit delayed and timely quenching of thermal fluorescence and recovery of green light emission, while TMG2MnBr4 shows thermally stable green luminescence. TA2MnBr4 and TMG2MnBr4 were used to achieve timely information encryption and anti-counterfeiting. The pairing combinations of TAMn2Cl5·2H2O, TA2MnBr4 and TMG2MnBr4 achieved dual-secure encryption and anti-counterfeiting of information. This work demonstrates the potential applications of Mn (II)-based metal halides in the fields of information encryption and anti-counterfeiting.

源语言英语
文章编号159672
期刊Chemical Engineering Journal
505
DOI
出版状态已出版 - 1 2月 2025

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引用此

Cong, L., Lv, L., Liu, Y., Jia, Y., Chang, X., Lin, Y., Li, J., & Cui, B. B. (2025). Manganese halides with timely and delayed reversible thermal fluorescence quenching for dual-secure information encryption and anti-counterfeiting. Chemical Engineering Journal, 505, 文章 159672. https://doi.org/10.1016/j.cej.2025.159672