Cited by A Novel Strategy to Construct Mofs-Based Probes Using New Reactive Coumarin Ligands for Rapid and Sensitive Detection of Hydrogen Sulfide (H2s)

Reconfigured Spin-Flip Process Enables Efficient and Persistent Triplet Excitons in Organic–Inorganic Metal Halides DOI

Zi-Ying Li, Rui Feng,

Shi-Shuang Huang

et al.

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 13, 2025

Triplet excitons, driven by spin-flip processes, play a crucial role in enabling efficient room-temperature phosphorescence across various applications. However, attaining significant accumulation of long-lived excitons is impeded the simultaneous influence nonradiative and radiative decay pathways alongside intersystem crossing efficiencies. Here, we introduce solvent intercalation approach that leverages triplet exciton processes family zero-dimensional organic-inorganic halides, A2ZnBr4 (A = organic phosphonium cations). By intercalating inactive molecules into these their can be reconfigured. This leads to significantly amplified but attenuated transitions, which give rise 16- 6-fold increases lifetime quantum yield, respectively. Our single crystal X-ray diffraction, transient absorption, theoretical calculation results reveal such dramatic improvement attributed unique spatial effect on both electrons holes induced intercalated molecules. The consequently reduced orbital degeneracy number spin-allowed channels, promoting crossing, while synergistically enhanced electron localization diminishes decay, leading high efficiency enduring phosphorescence. findings offer new pathway for manipulating process boost emission with potential applications designing wide spectrum phosphorescent materials.

Language: Английский

Citations

Control of photoluminescence properties by tailored supramolecular matrices DOI