Year: 2024
Type: article
Abstract: Aqueous‐phase phosphors are of utmost importance for a myriad of applications. However, the emission wavelengths of the current aqueous organic room‐temperature phosphorescent (RTP) materials are limited to green and red bands, while the blue part is rarely reported, thus limiting the development of a full‐color RTP system. Theoretically, carboxylated benzene is expected to be blue phosphorescence‐emissive, but only green phosphorescence is observed in solid, due to the strong intermolecular π–π stacking that decreases the energy gap. Herein, the use of water‐dispersible layered double hydroxide (ZnAl‐LDH) is proposed for isolating Ph‐(COOH)n and the distance between the adjacent chromophores is confirmed to be larger (≈7.0 Å) than the threshold of π–π interaction. Deep‐blue phosphorescence with a lifetime over 0.1 s, and a maximum luminescence quantum yield of 42%, is harvested in the aqueous phase. The long‐lived deep‐blue phosphorescence is successfully explored for high‐temperature display and luminescent dyes.
Source: Advanced Science
Authors: Qian Chen, Peisheng Cao, Peng Wu
Institution: Sichuan University
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $6,120
Awards: G2517065553, G7006219233
OpenAlex ID: W4405945458