Halogen‐ and Counterion‐Modulated Photochromic and Photoluminescence Properties of Haloargentate Hybrids

Shen, Junju; Zhang, Xiaoli; Kang, Xiaoli; Hao, Pengfei

doi:10.1002/ejic.201900258

Cited by 15 publications

(6 citation statements)

References 80 publications

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“…3− polymeric chain. [53][54] Insets in (g) and (h) show the corresponding plots of the PL intensity vs excitation power. (i) A CIE 1931 plot with the emission colors of (TEP)2Cu2Br4 and (TEP)2Cu4Br6.…”

Section: Synthesis and Structurementioning

confidence: 99%

Stimuli-responsive Photoluminescent Copper(I) Halides for Scintillation, Anticounterfeiting and LED Applications

Saparov,

Popy,

Singh

et al. 2024

Preprint

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Highly sensitive stimuli-responsive multifunctional luminescent materials are crucial for applications in optical sensing, high-level security, and anticounterfeiting. Here, we report two zero-dimensional (0D) hybrid copper(I) halides, (TEP) Cu Br and (TEP) Cu Br , which are comprised of isolated [Cu Br ] and [Cu Br ] inorganic cluster units, respectively, separated by TEP (TEP = tetraethylphosphonium) cations. (TEP) Cu Br and (TEP) Cu Br demonstrate ultrabright greenish-white and orange-red emissions, respectively, with near unity photoluminescence quantum yields. Optical spectroscopy measurements and density-functional theory (DFT) calculations reveal that photoemissions of these compounds originate from the formation of self-trapped excitons (STEs) due to the excited-state distortions in the copper(I) halide units. Single crystals of both compounds are radioluminescence (RL) active at room temperature under both X- and γ-rays exposure. The excellent energy resolution values and light yields up to 15,800 ph/MeV under 662 keV γ-rays of Cs suggest their potential for scintillation applications. Remarkably, (TEP) Cu Br and (TEP) Cu Br are interconvertible through external chemical stimuli or reverse crystallization. In addition, both compounds demonstrate luminescence on-off switching upon thermal stimuli. The sensitivity of (TEP) Cu Br and (TEP) Cu Br to the chemical and thermal stimuli coupled with their ultrabright emission allows their consideration for practical applications such as solid-state lighting, sensing, information storage, and anticounterfeiting.

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Section: Synthesis and Structurementioning

confidence: 99%

Stimuli-responsive Photoluminescent Copper(I) Halides for Scintillation, Anticounterfeiting and LED Applications

Saparov,

Popy,

Singh

et al. 2024

Preprint

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show abstract

“…As an important member of the metal halide family, organic–inorganic haloargentate hybrids have always fascinated researchers, and this is due to not only their structural diversity, ranging from discrete blocks to three-dimensional (3D) systems, − but also their multiple applicable natures in nonlinear optical properties, visible light catalysis, photochromism, piezochromism, and switchable dielectrics . On the other hand, the thermally stimulated phase transition materials often bring about interesting physical properties such as fluorescence, thermochromism, , ferroelectricity, and so on.…”

Section: Introductionmentioning

confidence: 99%

Thermotropic Structure Phase Transitions and Two Types of Thermochromic Behaviors in a Bromoargentate Cluster [Pr-dabco]₂Ag₄Br₆

Pan,

Zhai,

Zhang

et al. 2024

Inorg. Chem.

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Organic−inorganic silver halide hybrids show abundant phase transitions and thermochromism. However, it is very rare that silver halides exhibit thermochromism related to thermotropic structure phase transition. Herein, a bromoargentate hybrid, [Pr-dabco] 2 Ag 4 Br 6 (1) (Pr-dabco + = 1-propyl-1,4diazabicyclo-[2.2.2]octan-1-ium), with tetranuclear [Ag 4 Br 6 ] 2− clusters was prepared and characterized by microanalysis, ultraviolet−visible (UV−vis) diffuse reflectance spectroscopy, and thermogravimetric (TG) and differential scanning calorimetry (DSC) techniques. Interestingly, 1 undergoes an irreversible structure phase transition at ∼436 K in the first heating process, which is accompanied by an abrupt color change from colorless to yellow; however, a reversible color change between pale yellow and yellow is observed in the next heating−cooling cycles. Notably, DSC measurement revealed that a reversible phase transition is associated with the change in color between pale yellow and yellow, while the powder X-ray diffraction (PXRD) patterns corresponding to pale yellow and yellow phases are quite similar to each other. These observations demonstrate that thermochromism in the next heating−cooling runs is associated with a reversible structure phase transition, which perhaps concerns the disorder−order transformation of alkyl chains in the cationic ligand [Pr-dabco] + , and relevant to the anharmonic fluctuations of the Ag−Br and Ag−N bonds, a strong electron−phonon coupling effect is seen within the bromoargentate cluster.

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“…Common inorganic photochromic factors include silver halides, 24,25 transition metal oxides (e.g. TiO 2 , WO 3 ), [26][27][28][29][30][31][32] and polyoxometalates (POMs).…”

Section: Introductionmentioning

confidence: 99%

Synthesis of sodium alginate/polyacrylamide photochromic hydrogels with quadruple crosslinked networks

Zuo¹,

Qi²,

Xie³

et al. 2023

J. Mater. Chem. B

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Halogen‐ and Counterion‐Modulated Photochromic and Photoluminescence Properties of Haloargentate Hybrids

Cited by 15 publications

References 80 publications

Stimuli-responsive Photoluminescent Copper(I) Halides for Scintillation, Anticounterfeiting and LED Applications

Stimuli-responsive Photoluminescent Copper(I) Halides for Scintillation, Anticounterfeiting and LED Applications

Thermotropic Structure Phase Transitions and Two Types of Thermochromic Behaviors in a Bromoargentate Cluster [Pr-dabco]₂Ag₄Br₆

Synthesis of sodium alginate/polyacrylamide photochromic hydrogels with quadruple crosslinked networks

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Halogen‐ and Counterion‐Modulated Photochromic and Photoluminescence Properties of Haloargentate Hybrids

Cited by 15 publications

References 80 publications

Stimuli-responsive Photoluminescent Copper(I) Halides for Scintillation, Anticounterfeiting and LED Applications

Stimuli-responsive Photoluminescent Copper(I) Halides for Scintillation, Anticounterfeiting and LED Applications

Thermotropic Structure Phase Transitions and Two Types of Thermochromic Behaviors in a Bromoargentate Cluster [Pr-dabco]2Ag4Br6

Synthesis of sodium alginate/polyacrylamide photochromic hydrogels with quadruple crosslinked networks

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Thermotropic Structure Phase Transitions and Two Types of Thermochromic Behaviors in a Bromoargentate Cluster [Pr-dabco]₂Ag₄Br₆