Reversible multilevel stimuli-responsiveness and multicolor room temperature phosphorescence to fluorescence transition based on a metal–organic framework system

IF 13.3 1区工程技术 Q1 ENGINEERING, CHEMICAL

Chemical Engineering Journal Pub Date : 2025-01-29 DOI:10.1016/j.cej.2025.160075

Hui-Li Sun, Zhong-Hao Wang, Rui-Qi Huang, Zhuo-Di Chen, Mei Pan

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引用次数: 0

Abstract

Photoluminescent metal–organic frameworks (MOFs) have garnered significant interest over the years. However, reports on room-temperature phosphorescence (RTP) MOFs with multilevel stimulus responsiveness are scarce. Achieving efficient intersystem crossing (ISC) across singlet − triplet states poses a challenge. This research presents LIFM-SHL-2, a MOF that demonstrates multilevel stimuli-responsiveness, transiting between high-efficiency green RTP and blue fluorescence upon grinding or hydrochloric acid (HCl) vapor fumigation. Due to its distorted molecular structure and porous structure, the RTP emission of LIFM-SHL-2 is easily altered by external stimuli, resulting in phase transitions and unique multilevel responses. The mechanically induced transition of LIFM-SHL-2 from a crystalline to an amorphous state can restore the elastic framework properties of the initial crystal, leading to variable luminescence. At the same time, LIFM-SHL-2 demonstrates potential for use in optical security, encryption and gas sensing, underscoring its importance for the development of advanced smart MOF-based RTP materials.

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来源期刊

Chemical Engineering Journal 工程技术-工程：化工

CiteScore

21.70

自引率

9.30%

发文量

6781

审稿时长

2.4 months

期刊介绍： The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.