Issue 46, 2016

A dye encapsulated terbium-based metal–organic framework for ratiometric temperature sensing

Abstract

A terbium-based metal–organic framework (MOF) TbTATAB (H3TATAB = 4,4′,4′′-s-triazine-1,3,5-triyltri-p-aminobenzoic acid) with a 1D channel has been synthesized and structurally characterized. Then, the luminescent dye 7-diethylamino-4-methylcoumarin (C460) was encapsulated into the channel of TbTATAB by an exchange strategy to yield the dual-emitting MOF⊃dye composite TbTATAB⊃C460. Luminescence explorations demonstrated that the composite can be applied as a ratiometric thermometer over a wide temperature range from 100 to 300 K. The unique energy transfer between C460 molecules and Tb3+ enables the TbTATAB⊃C460 thermometer to be highly temperature-sensitive with a maximum relative sensitivity of 4.484% K−1 at 300 K. The composite luminescent thermometer is self-calibrated, colorimetric, reusable and much more thermosensitive than most of the other explored sensors.

Graphical abstract: A dye encapsulated terbium-based metal–organic framework for ratiometric temperature sensing

Supplementary files

Article information

Article type
Paper
Submitted
21 Sep 2016
Accepted
31 Oct 2016
First published
31 Oct 2016

Dalton Trans., 2016,45, 18689-18695

A dye encapsulated terbium-based metal–organic framework for ratiometric temperature sensing

T. Xia, T. Song, Y. Cui, Y. Yang and G. Qian, Dalton Trans., 2016, 45, 18689 DOI: 10.1039/C6DT03674K

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