Efficient triplet energy transfer in a 0D metal halide hybrid with long persistence room temperature phosphorescence for time-resolved anti-counterfeiting

Li, Jie; Wu, Jingjie; Xiao, Yonghong; Rao, Longshi; Zeng, Ruosheng; Xu, Ke; Huang, Xiao-Chun; Zhang, Jin Z.; Luo, Binbin

doi:10.1039/d3qi01774e

Cited by 10 publications

(2 citation statements)

References 47 publications

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“…As a kind of excellent host material, MHHs are widely utilized for Sb 3+ doping to tune the optical properties and afterglow time. ,− Since the RTP of CICH ranging from 380 to 650 nm overlaps well with the absorption of Sb 3+ (∼320–450 nm), triplet energy transfer might happen in Sb 3+ -doped CICH. Therefore, CICH with different Sb 3+ doping levels (CICH: x %Sb) were prepared.…”

Section: Resultsmentioning

confidence: 99%

Long-Persistent High-Temperature Phosphorescence of Zero-Dimensional Metal Halide Hybrid for Temperature-Sensitive Anticounterfeiting

Xie,

Peng,

Qin

et al. 2024

ACS Appl. Nano Mater.

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Solid-state materials with long-persistence phosphorescence always suffer serious thermal quenching effect that greatly hinders their applications at high-temperature conditions (>373 K). Therefore, developing high-temperature phosphorescence (HTP) materials remains a great challenge. In this work, cytosine (Cyt) is hybridized with indium chloride into zero-dimensional (Cyt) 2 [InCl 5 • H 2 O] (CICH). A green afterglow up to 1.0 s is observed at room temperature for CICH but almost quenched at 448 K due to the serious thermal quenching effect. Upon removing the coordinated H 2 O molecules of CICH (denoted to CIC), CIC shows an excellent performance of HTP with a persistence time of 0.4 s even at 448 K. The greatly improved thermal resistance is attributed to the removal of coordinated H 2 O molecules, which leads to a reduced free volume of Cyt, thereby suppressing the molecular vibration and rotation. Additionally, the afterglow time of CICH can be facilely tailored through Sb 3+ doping due to efficient triplet energy transfer. At last, given the high thermal tolerance of CIC, a temperature-sensitive anticounterfeiting is successfully demonstrated.

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Section: Resultsmentioning

confidence: 99%

Long-Persistent High-Temperature Phosphorescence of Zero-Dimensional Metal Halide Hybrid for Temperature-Sensitive Anticounterfeiting

Xie,

Peng,

Qin

et al. 2024

ACS Appl. Nano Mater.

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“…As a kind of ionic compound, metal halide hybrids (MHHs) mainly consist of organic cations and metal halide polyhedra anions. Due to their wide composition and structure tunability, easy preparation, and excellent optical properties, MHHs have been attracted enormous attention in optoelectronic fields including X-ray scintillator, − solid-state lighting, − anticounterfeiting, − information encryption, and stimulus response. , Recently, [2 + 2] photocycloaddition was successfully employed to control the room-temperature phosphorescence switch and photochromism in zero-dimensional (0D) bibased MHHs . Endowing MHHs with reversible photochromism could significantly broaden their applications in fields such as high-level-security information encryption and optical data storage.…”

Section: Introductionmentioning

confidence: 99%

Photocycloaddition of Zero-Dimensional Metal Halide Hybrids with Reversible Photochromism

Liu,

Chen,

Xiao

et al. 2024

ACS Appl. Mater. Interfaces

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In this work, two zero-dimensional (0D) metal halide hybrids L 2 ZnBr 4 [1, L = (E)-4-(2-(1H-pyrrol-3-yl)vinyl)-1-methylpyridin-1-ium] and L 6 Pb 3 Br 12 (2) were prepared, which demonstrated photochromism and photoinduced cracking. Upon irradiation at 450 nm, a single crystal-to-single crystal transformation occurred as a result of the [2 + 2] photocycloaddition of L. Interestingly, compared to the complete photocycloaddition of L in 1, only two-thirds of L monomers could be photodimerized in 2 because of the difference in L orientation. 1 shows reversible photochromic behavior including rapid response time, few cracks, high conversion rate, and good reaction reversibility, while 2 exhibits no significant color change but distinct photoinduced cracking because of the large local lattice strain induced by inhomogeneous and anisotropic deformation. Moreover, the photocycloaddition of L results in the distinct shift of photoluminescence of 1 and 2, attributed to the variation in conjugation of π electrons and distortion of metal halide clusters. As a proof-ofconcept, reversible optical writing is demonstrated for 1. These findings provide new insights into the design of stimuli-responsive multifunctional materials.

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Engineered Energy Transfer in Room Temperature Phosphorescent Materials for Time‐Resolved Dual‐Mode Encryption

Ren,

Zhang,

et al. 2024

Adv Funct Materials

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Room temperature phosphorescence (RTP) materials are of significant attentions due to their unique optical properties and potential applications in anti‐counterfeiting and information security. However, single spatial resolution anti‐counterfeiting decryption methods fail to meet high‐level security demands. A novel dual‐mode information encryption strategy based on self‐trapped exciton (STE) fluorescence and phosphorescence is proposed. By introducing ns2 metal ions into the zero‐dimensional organic–inorganic hybrid metal halide (Ph3S)2SnCl6, energy transfer pathways from the S1 and Tn energy levels to the STEs are constructed, enabling precise control of phosphorescence performance. This material exhibited STE fluorescence‐phosphorescence dual‐mode optical properties with different afterglow time, which can be utilized to develop high‐performance time‐resolved cryptographic systems. Femtosecond transient absorption experiments indicated that the energy transfer rate from the S1 to STEs significantly affected the time‐resolved characteristics of long afterglow materials. The potential of this material in time‐resolved cryptographic systems is demonstrated, enhancing security through time‐resolved multi‐level encryption and providing a new avenue for advanced anti‐counterfeiting and information security.

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Efficient triplet energy transfer in a 0D metal halide hybrid with long persistence room temperature phosphorescence for time-resolved anti-counterfeiting

Abstract: Endowing metal halide hybrids (MHHs) with time-resolved emission and afterglow could significantly broaden their applications in fields such as information security and anti-counterfeiting. Nonetheless, there have been relatively few successes...

Cited by 10 publications

References 47 publications

Long-Persistent High-Temperature Phosphorescence of Zero-Dimensional Metal Halide Hybrid for Temperature-Sensitive Anticounterfeiting

Long-Persistent High-Temperature Phosphorescence of Zero-Dimensional Metal Halide Hybrid for Temperature-Sensitive Anticounterfeiting

Photocycloaddition of Zero-Dimensional Metal Halide Hybrids with Reversible Photochromism

Engineered Energy Transfer in Room Temperature Phosphorescent Materials for Time‐Resolved Dual‐Mode Encryption

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