High-performance room temperature phosphorescence prompted by hydrogen-bonded organic frameworks

Abstract

Remarkable efforts have been made for room temperature phosphorescence (RTP) materials; however, achieving desirable RTP materials in water remains a focus of researchers. Here, we report a high-performance RTP platform based on hydrogen-bonded organic frameworks (HOFs) by simple and efficient in situ encapsulation of phosphor into HOF materials. The obtained host-guest materials not only exhibit phosphorescent lifetime of up to 4.91 ms but also resist water and oxygen quenching agents to maintain phosphorescence in aqueous solution. In addition, an attractive triplet-to-singlet Förster resonance energy transfer (TS-FRET) platform can be easily fabricated by embedding Nile red (NilR) acceptor into [email protected] (NPA: 4-bromo-1,8-naphthalic anhydride) donor materials. Furthermore, the proposed HOF-based RTP materials can be facilely processed into luminescent film. This HOF-based RTP strategy may act as a facile and versatile route toward outstanding RTP materials in aqueous solution.