A universal strategy toward two-component organic-inorganic metal halide luminescent glasses and glass-crystal composites.

The development of melt-quenched organic-inorganic metal halide (OIMH) glasses is hampered by the scarcity of suitable organic molten salts and low luminescence efficiency. Herein, we developed a series of two-component OIMH amorphous glasses consisting of (TPG)MnBr (TPG, triphenylguanidium) and AMnBr (A, organic molten cation), named α(ATPG). The high glass-formation ability (GFA) in (TPG)MnBr provides a platform to modulate the crystallization of another molten AMnBr by homogeneous melting.

Branched Alkyl Chains Tunable Organic-Inorganic Hybrid Manganese Halides for Anti-counterfeiting, White Light-emitting Diode and X-ray Imaging Applications.

Manganese-based organic-inorganic metal halides (Mn-based OIMHs) scintillators have aroused a research upsurge due to their outstanding photoluminescence performance, low toxicity, and tunable structures. Herein, we demonstrate a molecular engineering strategy that synergistically enhances luminescence efficiency and radiation sensitivity by systematic elongation of branched alkyl chains in phosphonium-based cations. The (4-DEATBP)MnBr (4-DEATBP = (4-(diethylamino)butyl)triphenylphosphonium) crystal exhibits remarkable thermochromic luminescence properties and anti-thermal quenching effect, highlighting the application potential in high-temperature anti-counterfeiting and information encryption.

An anti-thermal-quenching organic-inorganic hybrid manganese-based single-crystal scintillator for high-temperature X-ray imaging.

High-temperature X-ray detection holds promising potential in practical applications in the development of industry. Organic-inorganic manganese-based halide (OIMH) scintillators have undergone a research upsurge due to their high X-ray attenuation ability, low preparation cost, outstanding photoluminescence performance, and flexible structures. However, the thermal quenching effects of OIMH materials limit their applications at high temperatures.

Organic-Inorganic Hybrid Rare Earth Halide Glasses for Tunable Multicolor X-ray Scintillation.

Rare earth-based all-inorganic glass-ceramics have played an important role in the field of optoelectronics. However, the research of organo-inorganic hybrid rare earth halide glass that can be produced at low temperatures is still in the blank stage. In this paper, we report for the first time novel amorphous organic-inorganic hybrid rare earth-based halide luminescent glasses, BzmimLnCl (Bzmim = 1-benzyl-3-methylimidazolium; Ln = Tb, Eu), and realize tunable multicolor photoluminescence emission.

Anion-π interaction guided switchable TADF and low-temperature phosphorescence in phosphonium salts for multiplexed anti-counterfeiting.

Anion-π interactions have gained continuous attention in diverse organic aggregates, as they can effectively alter emission behavior. Herein, the anion-π interaction is introduced to phosphonium salts, which exhibit tunable thermally activated delayed fluorescence and phosphorescence emission. Intriguingly, the emission spectra evolve from deep-blue to yellow emission by regulation of the anion-π interaction strength through varying the anions, such as BF , CFSO , PF , and NO, accompanied by adjustable luminescent decay times from milliseconds to several seconds.

Crystallization of CsPbBr Nanocrystals within a Melt-Quenched Glassy Coordination Polymer.

Lead halide perovskite nanocrystal materials such as CsPbX (X = Cl, Br, and I) have triggered an intense research upsurge due to their excellent scintillation performance. Herein, an crystallization strategy is developed to grow CsPbBr nanocrystals (NCs) within a low-melting-point (280 °C) coordination polymer (CP) glass. The viscosity of coordination glass is reduced through a low-temperature (e.

Bisphosphonium cation based metal halide glass scintillators with tunable melting points.

Organic-inorganic metal halide (OIMH) glass offers the advantages of large-scale production, high transparency, and minimal light scattering. However, undesired crystallization in OIMH glass can occur, leading to deteriorated transparency. Herein, a series of bisphosphonium organic cations were designed to construct Mn-based metal halide crystals with a photoluminescence quantum yield (PLQY) near unity, alongside the development of highly thermally stable OIMH glasses.