Phase transition of metal–organic frameworks for regulating the fluorescence properties of dyes. (13th October 2022)

• Record Type: Journal Article
• Authors: Qin, Ziyue; Ren, Zhen; Chen, Cheng; Liu, Liwei; Ji, Ning; Zhao, Yanhua; Zha, Baoli; Fu, Yu; Shen, Yu; Huo, Fengwei
• Is Part Of: New journal of chemistry. Volume 46:Number 42(2022)
• Page Start: 20056
• Page End: 20060
• Publication Date: 2022-10-13
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/d2nj04243f
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : The phase transition of MOFs through a pressure-induced stimulated-aging strategy for the preparation of dyes@ZIF-8 with high loadings is reported. Abstract : Encapsulating dye molecules into metal–organic frameworks (MOFs) with high loadings and tunable photophysical properties is promising for future applications in opto-electronic displays, but it is challenging to match the channel size of the MOFs with the dimensions of the dyes. Here, we report a pressure-induced stimulated-aging (PISA) strategy that enables a large number of dyes to be well dispersed and confined within MOFs (denoted as dyes@MOFs). The fluorescence properties of these dyes can be regulated through the MOF microenvironment. Specifically, the fluorescence lifetime and quantum yield of rhodamine B (RhB)@ZIF-8 are 5–6 times higher than those of solid RhB. Moreover, the dyes@MOFs composites are fabricated into patterns and exhibit application prospects for multicolor displays, information encryption and storage.