title: A Luminescent Metal-Organic Framework Thermometer with Intrinsic Dual Emission from Organic Lumophores.
abstract: A new mixed-ligand metal-organic framework (MOF), ZnATZ-BTB, has been constructed as a luminescent ratiometric thermometer by making use of the intrinsic dual emission at cryogenic temperatures. Its twofold interpenetrated network promotes the Dexter energy transfer (DET) between the mixed organic lumophores. The temperature-dependent luminescent behavior arises from the thermal equilibrium between two separated excited states coupled by DET, which is confirmed by Boltzmann distribution fitting. The small excited-state energy gap allows ZnATZ-BTB to measure and visualize cryogenic temperatures (30-130 K) with significantly high relative sensitivity (up to 5.29% K(-1) at 30 K). Moreover, it is the first example of a ratiometric MOF thermometer the dual emitting sources of which are widely applicable mixed organic ligands, opening up new opportunities for designing such devices.
authors: State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China.|Graduate School of the Chinese Academy of Sciences Beijing, 100049, China.
authors: Hao
authors: H
authors: Zhang
authors: State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China.
authors: Chensheng
authors: C
authors: Lin
authors: State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China.
authors: Tianlu
authors: T
authors: Sheng
authors: State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China.
authors: Shengmin
authors: S
authors: Hu
authors: State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China.|Graduate School of the Chinese Academy of Sciences Beijing, 100049, China.
authors: Chao
authors: C
authors: Zhuo
authors: State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China.
authors: Ruibiao
authors: R
authors: Fu
authors: State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China.
authors: Yuehong
authors: Y
authors: Wen
authors: State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China.|Graduate School of the Chinese Academy of Sciences Beijing, 100049, China.
authors: Haoran
authors: H
authors: Li
authors: State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China.|Graduate School of the Chinese Academy of Sciences Beijing, 100049, China.
authors: Shaodong
authors: S
authors: Su
authors: State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China. wxt@fjirsm.ac.cn.
authors: Xintao
authors: X
authors: Wu
keywords: cryogenic temperatures; energy transfer; fluorescence; metal-organic frameworks; ratiometric thermometer