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‐Promoted Self‐Trapped Exciton Emission and White‐Light Harvesting in Lead Halide Metal–Organic Frameworks at Ambient Conditions

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

Опубликована: Фев. 8, 2025

Abstract Lead halide metal−organic frameworks (MOFs) possess unique advantages in preparing single‐component white‐light‐emitting (WLE) materials due to their broadband emission based on self‐trapping excitons (STEs). However, order obtain high‐quality white light emission, challenges remain adjusting and optimizing the color temperature coordinates of STE emission. Herein, we have achieved tunable with Commission International de l'Eclairage (0.32, 0.38) 5777 K at ambient conditions TMOF‐8(Cl) through pressure treatment. The irreversible lattice distortion after treatment reduces distance between [PbCl] + unit TDC 2− unit. enhanced hydrogen bonding interactions electronic coupling Pb‐ s orbitals ligand energy levels turn charge transfer (CT) channel from Adjusting degree can achieve regulation relative intensity CT thereby obtaining This study provides a new perspective modulation MOFs platform for development WLE materials.

Язык: Английский

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Pressure-Induced Changes in the Phase Distribution and Carrier Dynamics of Quasi-Two-Dimensional Ruddlesden–Popper Perovskites

The Journal of Physical Chemistry Letters, Год журнала: 2024, Номер 15(32), С. 8142 - 8150

Опубликована: Авг. 2, 2024

Quasi-two-dimensional (quasi-2D) perovskites hold significant potential for diverse design strategies due to their tunable structures, exceptional optical properties, and environmental stability. Due the complexity of structure carrier dynamics, characterization methods such as photoluminescence absorption spectroscopy can observe but cannot precisely distinguish or identify phase distribution within quasi-2D perovskite films correlate phases with dynamics. In this study, we used pressure modulate intralayer interlayer structures (PEA)

Язык: Английский

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Fabrication of a novel mixed-valent copper-based coordination polymer as a fluorescent sensor for selective and efficient detection of multiple analytes

Inorganic Chemistry Communications, Год журнала: 2024, Номер unknown, С. 113354 - 113354

Опубликована: Окт. 1, 2024

Язык: Английский

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