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

Author(s) Xia, T.; Song, T.; Cui, Y.; Yang, Y.; Qian, G.
Journal Dalton Trans
Date Published 2016 Nov 22
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 Tb(3+) 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.

DOI 10.1039/c6dt03674k
ISSN 1477-9234
Citation Xia T, Song T, Cui Y, Yang Y, Qian G. A dye encapsulated terbium-based metal-organic framework for ratiometric temperature sensing. Dalton Trans. 2016;45(46):18689-18695.

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