Chemical Communications, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 25, 2024
This study explores the synthesis and melting behavior of 9R-like 2D hybrid metal halide (MHEA) 4 Pb 3 Br 10 , which has a low point 99 °C, highlighting its potential for melt-processing glass formation.
Language: Английский
Advanced Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 2, 2025
0D hybrid metal halide (HMH) luminescent glasses have garnered significant attentions for its chemical diversity in optoelectronic applications and it also retains the skeleton connectivity coordination mode of crystalline counterparts while exhibiting various physics/chemistry characteristics distinct from states. However, understanding glass-forming ability specific structural origins underpinning properties HMH remains elusive. In this review, is started solid-liquid phase transition thermodynamic analysis HMHs formed through melt-quenching, summarize current compounds capable stably forming glassy phases via design. The characterization methods are further discussed highlight exceptional transparency, properties, glass crystallization behaviors. Moreover, application prospects demonstrated by these been presented accordingly X-ray detection imaging, anti-counterfeiting, information encryption. Finally, perspective offered into future development emerging family their applications.
Language: Английский
Citations
2
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown
Published: June 5, 2024
Abstract The construction of mechanically responsive materials with reversible shape‐shifting, shape‐locking, and stretchability holds promise for a wide range applications in fields such as soft robotics flexible electronics. Here, we report novel thermoelastic one‐dimensional organic–inorganic hybrids ( R/S ‐Hmpy)PbI 3 (Hmpy=2‐hydroxymethyl‐pyrrolidinium) to show mechanical responses. single crystals undergo two phase transitions at 310 K 380 K. When heated K, they shape‐shifting expansion along the b ‐axis by about 13.4 %, corresponding larger deformation than that thermally activated shape memory alloys (8.5 %), exhibit strong actuation force. During cooling process, stretched crystal maintains shape‐locking phenomenon occurs, which is lifted when temperature decreases 305 Meanwhile, due introduction chiral ions, thermal switching shows 10‐fold second‐order nonlinear contrast (common values typically below 3‐fold). This study presents actuator based on ‐locking first time. dielectric optical properties broaden crystals.
Language: Английский
Citations
8
Inorganic Chemistry Frontiers, Journal Year: 2024, Volume and Issue: 11(15), P. 4611 - 4618
Published: Jan. 1, 2024
The first polar 2D lead-free hybrid perovskite (4BrPEA) 3 BiI 6 was synthesized by reducing the occupancy rate of Bi 3+ ions, and self-powered polarization-sensitive photodetector achieved a large photocurrent anisotropy factor 2.16.
Language: Английский
Citations
6
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(44)
Published: June 26, 2024
Abstract Crystalline metal halide perovskites (MHPs) have ushered in remarkable advancements across diverse fields, including materials, electronics, and photonics. While the advantages of crystallinity are well‐established, ability to transition a glassy state with unique properties presents unprecedented opportunities expand structure‐property relationship broaden application scope for 2D MHPs. Up until now, exploration amorphous analogs MHPs is confined high‐pressure conditions, limiting in‐depth studies practical applications. In this context, new type synthesized by incorporating halogen substituted organic cations, resulting combination low melting temperature inhibited crystallization. This can be effectively melt‐quenched into except (DMIEA) 3 Pb 2 I 7 (DMIEA = N , ‐dimethyl iodoethylammonium) counterpart. Analysis crystallization activation energy (DMIPA) 4 10 (DMIPA iodopropylammonium) reveals 60.7 ± 4.0 kJ mol −1 which indicates fast glass‐crystal transition. The atypical MHP showcases facile reversible switching between crystalline states opens up novel possibilities applications, such as nonvolatile memory, optical communication, neuromorphic computing.
Language: Английский
Citations
6
Chemical Science, Journal Year: 2024, Volume and Issue: 15(29), P. 11374 - 11381
Published: Jan. 1, 2024
Chiral three-dimensional lead iodide hybrids were constructed by introduction of chiral cations. The compounds exhibit BPVE, chiroptical properties, and Rashba–Dresselhaus effect, offering prospects for chiroptic spintronic applications.
Language: Английский
Citations
4
Nature Reviews Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 9, 2025
Language: Английский
Citations
0
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: April 21, 2025
Abstract Organic–inorganic hybrid metal halides are emerging as a class of functional materials that combine attractive photophysical properties with great processability. Their modular chemical structures allow for melt processing through crystal‐melt transitions. Herein, the study reports synthesis (Bzmim) 2 MnX 4 (Bzmim = 1‐benzyl‐3‐methylimidazolium, X Cl, Br, I) single crystals low melting temperatures ranging from 130 to 160 °C. Among them, MnBr exhibits superior luminescence performance photoluminescence quantum yield 78.6% and light 34 900 photons MeV −1 , making it act promising scintillator. Interestingly, leveraging fluidity porous structure nylon film, transparent crystalline ‐Nylon composite film is fabricated by melt‐infiltration process. Compared has an increased transmittance ≈20% >60%. It can be attributed uniform crystallization in pores which suppresses severe crosstalk caused large refractive index difference at nylon‐air interface. The melt‐processable spatial resolution 16 line pairs per millimeter practical X‐ray imaging, well applications curved imaging due its flexibility.
Language: Английский
Citations
0
Small, Journal Year: 2025, Volume and Issue: unknown
Published: April 2, 2025
2D hybrid organic-inorganic perovskites (2D HOIPs) are of interest for optoelectronic and phase-change applications. Using ultra-fast (flash) differential scanning calorimetry (FDSC), this study shows the HOIPs (S-Cl-MBA)2PbI4 (R-Cl-MBA)2PbBr4 (Cl-MBA referring to 4-chloro-α-methylbenzylamine) form a glass on cooling. Both show evidence liquid-to-glass transition during quenching from liquid state; reheating, glass-to-liquid is followed by crystallization melting. continuous heating in FDSC, temperature dependence viscosity characterized. The kinetic fragility similar that bulk metallic glass-formers significantly lower than organic chalcogenide liquids. On cooling liquid, formation first impeded thermal degradation, then crystallization. stages degradation can be related known mechanisms. This highlights reduced glass-transition as key parameters guiding optimization HOIP compositions targeted
Language: Английский
Citations
0
The Journal of Physical Chemistry C, Journal Year: 2024, Volume and Issue: 128(35), P. 14849 - 14859
Published: Aug. 26, 2024
Melt processability of metal halide hybrids (MHH), suitable for fabricating thin-film devices and accessing glassy phases compounds, has received current research interest. Successful melt requires suppressing melting temperatures (Tm) well below the decomposition temperature (Td). However, absence a clear structure–property correlation renders suppression Tm challenging low-dimensional MHH. Here, zero-dimensional (0D) Mn(II) is reported with rational choice ammonium organic cation (length aliphatic chain, aromatic substitution tertiary tethering group, variation). A observed structure delicate balance between ΔHfus ΔSfus at play in determining temperature. Experimental values support qualitative trend points, as highlighted by detailed Hirshfeld surface analysis. Among various compounds here, (BzBu3N)2MnBr4 (Bz = benzyl; Bu butyl) shows lowest 96 °C (with Td 180 °C). Furthermore, successful low-melting demonstrated doctor-bladed molten samples, maintaining purity crystallinity. The present work provides chemical thermodynamic insights into lowering points MHH unravels operative relationship, highlighting mechanism that vital importance designing 0D appropriate processability.
Language: Английский
Citations
3
Angewandte Chemie, Journal Year: 2024, Volume and Issue: unknown
Published: June 5, 2024
Abstract The construction of mechanically responsive materials with reversible shape‐shifting, shape‐locking, and stretchability holds promise for a wide range applications in fields such as soft robotics flexible electronics. Here, we report novel thermoelastic one‐dimensional organic–inorganic hybrids ( R/S ‐Hmpy)PbI 3 (Hmpy=2‐hydroxymethyl‐pyrrolidinium) to show mechanical responses. single crystals undergo two phase transitions at 310 K 380 K. When heated K, they shape‐shifting expansion along the b ‐axis by about 13.4 %, corresponding larger deformation than that thermally activated shape memory alloys (8.5 %), exhibit strong actuation force. During cooling process, stretched crystal maintains shape‐locking phenomenon occurs, which is lifted when temperature decreases 305 Meanwhile, due introduction chiral ions, thermal switching shows 10‐fold second‐order nonlinear contrast (common values typically below 3‐fold). This study presents actuator based on ‐locking first time. dielectric optical properties broaden crystals.
Language: Английский
Citations
2