Macroscopic Assembly of Chiral Hydrogen‐bonded Metal‐free Supramolecular Glasses for Enhanced Color‐tunable Ultralong Room Temperature Phosphorescence

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(28)

Опубликована: Май 12, 2023

Glassy materials, with desirable mechanical rigidity, shaping ability, high transparency, are attracting great interest in diverse fields. However, optically bulk molecule-based glasses still rare, mainly due to limited monomeric species and harsh preparation conditions. Herein, we report a facile bottom-up solution fabrication process obtain metal-free supramolecular (SMGs) at the macroscopic scale using L-Histidine hexamethylenetetramine as building blocks. The chiral SMGs possess color-tunable ultralong room temperature phosphorescence (decay lifetime up 141.2 ms) circular polarized luminescence (g factor 8.7×10-3 ). strong hydrogen bonds effectively drive formation of SMGs, provide rigid microenvironment boost triplet exciton generation. By virtue excitation- temperature-dependent applications including multicolored displays, visual UV detection, persistently luminescent thermometer demonstrated.

Язык: Английский

---

Zero-dimensional halide hybrid bulk glass exhibiting reversible photochromic ultralong phosphorescence

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Июнь 29, 2024

Dynamically responsive materials, capable of reversible changes in color appearance and/or photoemission upon external stimuli, have attracted substantial attention across various fields. This study presents an effective approach wherein switchable modulation photochromism and ultralong phosphorescence can be achieved simultaneously a zero-dimensional organic-inorganic halide hybrid glass doped with 4,4´-bipyridine. The facile fabrication large-scale glasses is accomplished through combined grinding-melting-quenching process. persistent luminescence regulated the photochromic switch induced by photo-generated radicals. Furthermore, incorporation aggregation-induced chirality effect generates intriguing circularly polarized luminescence, optical dissymmetry factor (g

Язык: Английский

---

Glassy inorganic-organic hybrid materials for photonic applications

Matter, Год журнала: 2024, Номер 7(6), С. 1950 - 1976

Опубликована: Апрель 26, 2024

Язык: Английский

---

Organic Cation Design of Manganese Halide Hybrids Glass toward Low‐Temperature Integrated Efficient, Scaling, and Reproducible X‐Ray Detector

Advanced Optical Materials, Год журнала: 2023, Номер 11(13)

Опубликована: Апрель 5, 2023

Abstract Zero‐dimensional (0D) structure‐based manganese metal halides (MHs) are believed to be the most promising candidates for next‐generation X‐ray scintillators due their intense radioluminescence and environmental friendliness. However, low‐temperature (<180 °C), large‐area integration with more efficient detection remains a tremendous challenge. Herein, from perspective of cation (ionic liquids) structure design, basic physical parameters 0D MHs regulated. And calculations experimental results demonstrate larger‐size cations that induce lower melting temperatures, larger exciton‐binding energies, ion migration energy, tunable hardness, which desirable MHscintillators. As result, champion materialHTP 2 MnBr 4 is achieved as glassy transparency wafer by (165 °C) melt‐quenching. Its application imaging features high spatial resolution (17.28 lp mm −1 ), scalability (>30 × 30 cm strong coupling force. Furthermore, HTP glass reproducible properties demonstrates light yield (38 000 photon MeV excellent irradiation stability, low limit (0.13 µGy s ). The authors believe this work will provide guidance MHscintillators further commercial applications.

Язык: Английский

---

Organic–Inorganic Hybrid Glasses of Atomically Precise Nanoclusters

Journal of the American Chemical Society, Год журнала: 2024, Номер 146(11), С. 7373 - 7385

Опубликована: Март 4, 2024

Organic–inorganic atomically precise nanoclusters provide indispensable building blocks for establishing structure–property links in hybrid condensed matter. However, robust glasses of ligand-protected nanocluster solids have yet to be demonstrated. Herein, we show [Cu4I4(PR3)4] cubane coordinated by phosphine ligands (PR3) form melt-quenched air with reversible crystal–liquid–glass transitions. Protective critically influence the glass formation mechanism, modulating glasses' physical properties. A utilizing ethyldiphenylphosphine-based nanoclusters, [Cu4I4(PPh2Et)4], exhibits superb optical properties, including >90% transmission both visible and near-infrared wavelengths, negligible self-absorption, near-unity quantum yield, high light yield. Experimental theoretical analyses demonstrate structural integrity [Cu4I4(PPh2Et)4] nanocluster, i.e., iodine-bridged tetranuclear cubane, has been fully preserved state. The strong internanocluster CH−π interactions found subsequently reduced vibration account its enhanced luminescence Moreover, this highly transparent enables performant X-ray imaging low-loss waveguiding fibers drawn above transition. discovery "nanocluster glass" opens avenues unraveling mechanisms designing novel luminescent well-defined advanced photonics.

Язык: Английский

---

Toward atomic-scale understanding of structure-dynamics-properties relations for metallic glasses

Progress in Materials Science, Год журнала: 2024, Номер 145, С. 101311 - 101311

Опубликована: Май 12, 2024

Язык: Английский

---

Bio-sourced flexible supramolecular glasses for dynamic and full-color phosphorescence

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Ноя. 3, 2024

Glass, a diverse family of amorphous materials, has significantly advanced human society across various fields. The demand for flexible ultrathin glass, driven by modern optical displays and portable optoelectronics, presents challenges in energy consumption, fabrication complexity, recycling. Here, we demonstrate flexibility full-color luminescence large-scale glasses derived from readily available natural resources, specifically egg albumen (EA) gelatin (GEL), via an evaporation-driven self-assembly process. dynamic crosslinked networks formed through hydrogen bonding between EA GEL impart both high hardness to the glasses, with flexural strength values comparable state-of-the-art inorganic organic glasses. Additionally, EA–GEL-based exhibit excitation-dependent time-gated chiral ultralong phosphorescence color blue red, lifetime up 180.4 ms. With their easy processability emission, these biogenic can be fabricated into anti-counterfeiting patterns information codes. There is increasing thin, but its recycling complex. authors report development glass luminescence, albumin gelatin.

Язык: Английский

---

Ultrahigh X‐Ray Imaging Spatial Resolution Enabled by an 0D Mn(II) Hybrid Scintillator

Advanced Functional Materials, Год журнала: 2024, Номер 34(40)

Опубликована: Апрель 15, 2024

Abstract Spatial resolution of scintillator is crucial for high‐quality X‐ray imaging, especially in tiny and complicated electronic component. In this work, PrPP 2 MnBr 4 single crystal obtained by dual‐solvent evaporation method, which gives an unprecedented high spatial 104.3 lp/mm, representingstate the art among non‐lead metal halides. The study also conducts preparation large area scintillation screen (10 cm × 10 cm) solidifying melted salt , thus giving excellent imaging with 53.5 lp mm −1 demonstrates its application on detection.

Язык: Английский

---

Multiphase Transformation in Hybrid Copper(I)-Based Halides Enable Improved X-ray Scintillation and Real-Time Imaging

ACS Materials Letters, Год журнала: 2024, Номер 6(4), С. 1542 - 1548

Опубликована: Март 19, 2024

Crystal-glass phase transformation and glass recrystallization in zero-dimensional (0D) hybrid metal halides make them thriving X-ray scintillators with the advantages of large-area fabrication improved performance. Herein, we report three 0D copper(I) composed identical organic cations versatile self-assembly copper-iodide anions find that volumes inorganic groups are related to their lattice energies, which conformationally governed thermodynamics formation through destabilization. A subsequent heating counterparts allows bulk glass-ceramic via recrystallization, exhibiting outstanding scintillation performances (with a light yield 64 000 ph MeV–1 detection limit 72.6 nGy s–1) high stability for real-time imaging (spatial resolution above 20 lp mm–1). This multiphase strategy luminescence halide opens an exploratory way structural design engineering scintillator screens imaging.

Язык: Английский

---

Large-Area Transparent Antimony-Based Perovskite Glass for High-Resolution X-ray Imaging

ACS Nano, Год журнала: 2024, Номер 18(26), С. 16715 - 16725

Опубликована: Июнь 14, 2024

Nonlead low-dimensional halide perovskites attract considerable attention as X-ray scintillators. However, most scintillation screens exhibit pronounced light scattering, which detrimentally reduces the quality of imaging. Herein, we employed a simple and straightforward solvent-free melt-quenching method to fabricate large-area zero-dimension (0D) antimony-based perovskite transparent medium, namely (C

Язык: Английский

---