TY - JOUR
T1 - Manganese halides with timely and delayed reversible thermal fluorescence quenching for dual-secure information encryption and anti-counterfeiting
AU - Cong, Li
AU - Lv, Longyun
AU - Liu, Ying
AU - Jia, Yuxin
AU - Chang, Xuerui
AU - Lin, Yufan
AU - Li, Juan
AU - Cui, Bin Bin
N1 - Publisher Copyright:
© 2025 Elsevier B.V.
PY - 2025/2/1
Y1 - 2025/2/1
N2 - 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.
AB - 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.
KW - Delayed and timely quenching
KW - Green light emission
KW - Information encryption and anti-counterfeiting
KW - Mn (II)−based hybrid metal halides
KW - The double-secure encryption system
UR - http://www.scopus.com/inward/record.url?scp=85215391354&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2025.159672
DO - 10.1016/j.cej.2025.159672
M3 - Article
AN - SCOPUS:85215391354
SN - 1385-8947
VL - 505
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
M1 - 159672
ER -