Achieving Dual Emission of Fluorescence and Phosphorescence from Anti-Kasha’s Metal–Organic Halides for Information Encryption

Shen, Yi; Wang, Bin; Wang, Pingping; Chen, Yang; Xu, Zhong; Huang, Wei; Wu, Dayu

doi:10.1021/acs.inorgchem.4c01047

Inorg. Chem.

2024

DOI: 10.1021/acs.inorgchem.4c01047

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Achieving Dual Emission of Fluorescence and Phosphorescence from Anti-Kasha’s Metal–Organic Halides for Information Encryption

Yi Shen,

Bin Wang,

Pingping Wang

et al.

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Aggregation‐induced circularly polarized luminescence and delayed fluorescence enabled by activating high‐level reverse intersystem crossing

Wang,

Ou,

Niu

et al. 2024

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Circularly polarized luminescence (CPL) materials with delayed fluorescence have attracted much attention due to their ability to efficiently trap triplet state excitons, thereby improving the photoluminescence quantum yields of CPL materials. However, much effort has been normally focused on the utilization of T1 excitons but seldom on the utilization of higher excited triplet state Tn (n > 1) excitons. Rational manipulation of higher excited triplet state Tn (n > 1) excitons and suppression of Kasha's rule of CPL materials remains a major challenge. Herein, two gold complex enantiomers ((R/S)‐BPAuBC) based on axially chiral binaphthyls and 3,6‐Di‐tert‐butylcarbazole groups are synthesized and systematically investigated. These materials exhibit aggregation‐induced circularly polarized delayed fluorescence. Circularly polarized delayed fluorescence was found to be enabled by activating high‐level reverse intersystem crossing (hRISC). The anti‐Kasha phosphorescence at 77 K proves that the exciton has a large population in the high‐lying triplet state T2, which allows the effective hRISC process to cross back to the singlet state S1 and emit delayed fluorescence. In addition, CPL “on–off” switching is further achieved in nanoparticles by acid–base stimulus, showing its potential as an acid–base responsive material.

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Aggregation‐induced circularly polarized luminescence and delayed fluorescence enabled by activating high‐level reverse intersystem crossing

Wang,

Ou,

Niu

et al. 2024

Aggregate

View full text Add to dashboard Cite

show abstract

Halide modulated room-temperature phosphorescence from one-dimensional metal‒organic halides for time-resolved anti-counterfeiting

Xu,

Shen,

Chen

et al. 2025

Journal of Luminescence

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Halogen Engineering Strategy-Induced Color-Tunable Room Temperature Phosphorescence in Metal–Organic Halides

Du,

Wang,

Zhu

et al. 2024

Inorg. Chem.

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Achieving Dual Emission of Fluorescence and Phosphorescence from Anti-Kasha’s Metal–Organic Halides for Information Encryption

Cited by 3 publications

References 50 publications

Aggregation‐induced circularly polarized luminescence and delayed fluorescence enabled by activating high‐level reverse intersystem crossing

Aggregation‐induced circularly polarized luminescence and delayed fluorescence enabled by activating high‐level reverse intersystem crossing

Halide modulated room-temperature phosphorescence from one-dimensional metal‒organic halides for time-resolved anti-counterfeiting

Halogen Engineering Strategy-Induced Color-Tunable Room Temperature Phosphorescence in Metal–Organic Halides

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