Highly pressure-responsive dual-mode optical manometer based on Mn2+-activated Ca2Gd8(SiO4)6O2 phosphors

Chemical Engineering Journal, Год журнала: 2025, Номер 505, С. 159652 - 159652

Опубликована: Янв. 16, 2025

Язык: Английский

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The art of controlled nanoscale lattices: A review on the self-assembly of colloidal metal–organic framework particles and their multifaceted architectures

Materials Science and Engineering R Reports, Год журнала: 2024, Номер 159, С. 100785 - 100785

Опубликована: Фев. 22, 2024

Язык: Английский

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Smart‐Responsive HOF Heterostructures with Multiple Spatial‐Resolved Emission Modes toward Photonic Security Platform

Advanced Materials, Год журнала: 2023, Номер 36(9)

Опубликована: Окт. 25, 2023

Abstract Luminescent hydrogen‐bonded organic frameworks (HOFs) with the unique dynamics and versatile functional sites hold great potential application in information security, yet most of responsive HOFs focus on single‐component framework restrained emission control, limiting further applications advanced confidential protection. Herein, first smart‐responsive HOF heterostructure multiple spatial‐resolved modes for covert photonic security platform is reported. The heterostructures are prepared by integrating different into a single microwire based hydrogen‐bond‐assisted epitaxial growth method. distinct behaviors permit to simultaneously display thermochromism via transformation acidichromism protonation effect, thus generating modes. dual stimuli‐controlled constitute fingerprint heterostructure, enable establishment barcode convert states, which demonstrate dynamic coding capability enhanced anticounterfeiting label applications. These results offer promising route design function‐oriented smart microdevices toward

Язык: Английский

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Harvesting Multicolor Photoluminescence in Nonaromatic Interpenetrated Metal–Organic Framework Nanocrystals via Pressure‐Modulated Carbonyls Aggregation

Advanced Materials, Год журнала: 2024, Номер 36(27)

Опубликована: Апрель 25, 2024

Abstract Interpenetrated metal–organic frameworks (MOFs) with nonaromatic ligands provide a unique platform for adsorption, catalysis, and sensing applications. However, nonemission the lack of optical property tailoring make it challenging to fabricate smart responsive devices interpenetrated MOFs based on ligand‐centered emission. In this paper, pressure‐induced aggregation effect is introduced in Zn 4 O(ADC) (Et 3 N) 6 (IRMOF‐0) nanocrystals (NCs), where carbonyl groups results O ─ distances smaller than sum van der Waals radii (3.04 Å), triggering photoluminescence turn‐on behavior. It noteworthy that IRMOF‐0 NCs display an ultrabroad emission tunability 130 nm from deep blue (440 nm) yellow (570 upon release ambient conditions at different pressures. The eventual retention through‐space n–π* interactions degrees via pressure treatment primarily responsible achieving controllable multicolor behavior initially nonemissive NCs. fabricated phosphor‐converted light‐emitting diodes pressure‐treated exhibit excellent thermal, chromaticity, fatigue stability. proposed strategy not only imparts new vitality but also offers perspectives advancements field displays daylight illumination.

Язык: Английский

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Pressure‐Tailored π–π Stacking in Dimers Enhances Blue Photoluminescence in Boron‐Based Organic Molecules

Laser & Photonics Review, Год журнала: 2025, Номер unknown

Опубликована: Янв. 11, 2025

Abstract Organic materials with exceptional blue photoluminescence have emerged as a captivating class of materials, exhibiting promising applications full‐color display and solid‐state lighting. However, the quenching is largely unsolved problem towing to strong π – interaction in aggregation effect or electrostatic repulsion. Herein, strategy harvest remarkably enhanced emission phenylboric acid molecules intricate hydrogen bond networks through pressure treatment engineering proposed. Intriguingly, quantum yields pressure‐treated experiences significant enhancement from 2.3 % 31.5 %, which shows bright emission. The inhibition benzene ring vibration reduction stacking originating offset mode are highly responsible for photoluminescence. This work demonstrates feasibility modulating molecular patterns achieve efficient presents momentous improving optical properties organic materials.

Язык: Английский

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Pressure treatment enables white-light emission in Zn-IPA MOF via asymmetrical metal-ligand chelate coordination

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Янв. 15, 2025

Metal-organic frameworks that feature hybrid fluorescence and phosphorescence offer unique advantages in white-emitting communities based on their multiple emission centers high exciton utilization. However, it poses a substantial challenge to realize superior white-light single-component metal-organic without encapsulating varying chromophores or integrating phosphor subunits. Here, we achieve high-performance with photoluminescence quantum yield of 81.3% via boosting triplet excitons distribution through pressure treatment Zn-IPA frameworks. A novel metal-ligand asymmetrical chelate coordination is successfully integrated into the after high-pressure over ~20.0 GPa. This modification unexpectedly endows targeted sample new emergent electronic state narrow singlet-triplet energy gap, which effectively accelerates spin-flipping process for boosted population. Time delay phosphor-converted light-emitting diodes are fabricated long time up ~7 s switching off, providing significant advancements time-delay lighting applications. Pressure-treatment can alter optical properties Here authors induce amorphization remains decompression enables efficient narrowing gap.

Язык: Английский

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Synthesis and Pressure-Induced Structural Phase Transition of Energetic Molecular Perovskite DAI-1

Solid State Sciences, Год журнала: 2025, Номер unknown, С. 107864 - 107864

Опубликована: Фев. 1, 2025

Язык: Английский

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Crystal-field regulation enables broadband-to-line emission switching in Cr³⁺-activated pyroxenes

Journal of Materials Chemistry C, Год журнала: 2024, Номер 12(7), С. 2379 - 2390

Опубликована: Янв. 1, 2024

The realization of pressure-driven dynamic and reversible broadband-to-line emission switching in Cr 3+ -activated pyroxenes LiScSi 2 O 6 LiScGe through crystal field engineering.

Язык: Английский

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Room temperature synthesized layered CAU-17 MOFs for highly active and selective electrocatalytic CO2 reduction to formate

Journal of Alloys and Compounds, Год журнала: 2024, Номер 978, С. 173516 - 173516

Опубликована: Янв. 13, 2024

Язык: Английский

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Vibration‐Dependent Dual‐Phosphorescent Cu₄ Nanocluster with Remarkable Piezochromic Behavior

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(29)

Опубликована: Май 1, 2024

Abstract The dual emission (DE) characteristics of atomically precise copper nanoclusters (Cu NCs) are significant theoretical and practical interest. Despite this, the underlying mechanism driving DE in Cu NCs remains elusive, primarily due to complexities excited state processes. Herein, a novel [Cu 4 (PPh 3 ) (C≡C− p −NH 2 C 6 H ]PF ( NC, shielded by alkynyl exhibiting DE, was synthesized. Hydrostatic pressure applied , for first time, investigate DE. With increasing pressure, higher‐energy peak gradually disappeared, leaving lower‐energy as dominant emission. Additionally, crystal exhibited notable piezochromism transitioning from cyan orange. Angle‐dispersive synchrotron X‐ray diffraction results revealed that reduced inter‐cluster distances under brought peripheral ligands closer, leading formation new C−H⋅⋅⋅N N−H⋅⋅⋅N hydrogen bonds . It is proposed these strengthened bond interactions limit ligands′ vibration, resulting vanishing peak. In situ high‐pressure Raman vibrationally resolved spectra demonstrated benzene ring C=C stretching vibration structural source

Язык: Английский

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