Dual-Ring-Locking Strategy Enables Persistent Blue Room Temperature Phosphorescence in Benzo[b]phospholiums DOI
Bo Yang,

Suqiong Yan,

Shirong Ban

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 18, 2025

Commercial phosphines and phosphoniums were commonly reported to have unstable triplet dissipation because of the flexible C-P pyramidal geometry, resulting in extremely weak or no phosphorescence. To boost populations stability by restricting molecular motion rebuilding electronic structures, we that dual-ring-locking strategy could enable elevated intersystem crossing (ISC) radiation for rigid benzo[b]phospholium configuration, exhibiting intense persistent room temperature phosphorescence (RTP) poly(vinyl alcohol) (PVA). Among them, dual-ring-locked [P1]+[Cl]- showed near-ultraviolet fluorescence maximized at 400 nm dichloromethane blue RTP emission 453 (Φphos ≈ 12.4%, τphos > 1200 ms) PVA matrix. In contrast, [P2]+[Cl]- possessed a single ring-locked nucleus had red-shifted < 1.8%, = 74.2 ms). Time-dependent density functional theory (TD-DFT) disclosed improved spin-flipping benefited from integrated π-π*/n-π* transition, rational split energy, excited states. The impressive OU-RTP duration function as an afterglow pattern optical encryption emitting layer light-emitting diode (LED) applications.

Language: Английский

New horizons in phosphorus-based emitters: From circularly polarized fluorescence to room-temperature phosphorescence DOI

Bo Yang,

Suqiong Yan,

Shirong Ban

et al.

Chinese Chemical Letters, Journal Year: 2025, Volume and Issue: unknown, P. 110837 - 110837

Published: Jan. 1, 2025

Language: Английский

Citations

1
Transparent Organic Glass With Bright Triplet Excitons for High‐Spatial‐Resolution Indirect X‐Ray Imaging via Heavy Metal Halide Incorporation DOI Open Access

Ziwei Xu,

Nan Li,

Xiaolong Feng

et al.

Advanced Optical Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 10, 2025

Abstract Organic scintillators are emerging as promising candidates for indirect X‐ray imaging due to their tunable luminescent properties. However, achieving high transparency while maintaining a content of organic material in scintillation pellets remains challenge, which limits performance. In this study, transparent glass based on ethyl‐triphenyl‐phosphonium chloride (ETPCl) is presented, exhibits bright exciton emission and enhance attenuation through the incorporation lead halide. Remarkably, addition halide does not compromise glass's transparency, ≈90% 400–800 nm wavelength range. Transient absorption measurements further reveal that presence heavy atoms enhances intersystem crossing improves triplet efficiency, increasing photoluminescence quantum yield from 7.1% pure ETPCl 35.4% containing 10 mol.% PbCl 2 . Additionally, atom effect attenuation, leading increased radioluminescence intensity. experiments demonstrate spatial resolution up 19.9 lp mm⁻¹ at modulation transfer function value 0.2. These findings provide approach fabricating scintillator glasses with improved utilization enabling high‐resolution imaging.

Language: Английский

Citations

0
How Intermolecular Interaction and Hydrostatic Pressure Affect the Organic Room Temperature Phosphorescence Properties: A QM/MM Study DOI
Yuanyuan Xu, Huanling Liu, Kunwei Pang

et al.

Chinese Journal of Physics, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

Citations

0
Enhanced Photoactivated Circularly Polarized Afterglow with High Dissymmetry Factor and Tunable Emission DOI Open Access
Yuxia Zhang, Yu-Chang Wang,

Junjie Wu

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 5, 2025

Abstract Photoactivated circularly polarized afterglow (CPA) exhibits broad application prospects in various optoelectronic areas due to its multidimensional emission characteristics, including wavelengths, lifetimes, and chirality. Achieving photoactivated CPA with extremely high dissymmetry factor ( g lum ) values is highly desired but considerably challenging. This work reports a bilayer assembly (R/S‐CLC‐TPB) integrating TPB@PMMA thin film the selective reflection of cholesteric liquid crystals. Initially, R/S‐CLC‐TPB no emission, while following 1 min UV irradiation, it achieves an noticeable long lifetime 125 ms value up 1.6. enhancement can be attributed oxygen consumption properties under subsequently minimizing loss triplet exciton. Furthermore, by employing triplet‐singlet Förster resonance energy transfer (TS‐FRET) strategy from organic persistent room‐temperature phosphorescence donor fluorescent dye acceptor, color successfully modulated green orange. Ultimately, these materials demonstrate promising capabilities for advanced multi‐level information encryption utilizing their tunable color, create multiple layers that selectively accessed decoded based on photoactivation chiroptical properties.

Language: Английский

Citations

0
Chiral cocrystals with circularly polarized persistent phosphorescence and large second harmonic generation DOI
Yongbo Peng,

Guoxing Zhou,

Rongyan Zhang

et al.

Surfaces and Interfaces, Journal Year: 2025, Volume and Issue: unknown, P. 106114 - 106114

Published: Feb. 1, 2025

Language: Английский

Citations

0
Dual-Ring-Locking Strategy Enables Persistent Blue Room Temperature Phosphorescence in Benzo[b]phospholiums DOI
Bo Yang,

Suqiong Yan,

Shirong Ban

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 18, 2025

Commercial phosphines and phosphoniums were commonly reported to have unstable triplet dissipation because of the flexible C-P pyramidal geometry, resulting in extremely weak or no phosphorescence. To boost populations stability by restricting molecular motion rebuilding electronic structures, we that dual-ring-locking strategy could enable elevated intersystem crossing (ISC) radiation for rigid benzo[b]phospholium configuration, exhibiting intense persistent room temperature phosphorescence (RTP) poly(vinyl alcohol) (PVA). Among them, dual-ring-locked [P1]+[Cl]- showed near-ultraviolet fluorescence maximized at 400 nm dichloromethane blue RTP emission 453 (Φphos ≈ 12.4%, τphos > 1200 ms) PVA matrix. In contrast, [P2]+[Cl]- possessed a single ring-locked nucleus had red-shifted < 1.8%, = 74.2 ms). Time-dependent density functional theory (TD-DFT) disclosed improved spin-flipping benefited from integrated π-π*/n-π* transition, rational split energy, excited states. The impressive OU-RTP duration function as an afterglow pattern optical encryption emitting layer light-emitting diode (LED) applications.

Language: Английский

Citations

0