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A heat-set lanthanide metallogel capable of emitting stable luminescence under thermal, mechanical and water stimuli

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Abstract

Preparing luminescence-stable lanthanide materials in a facile manner has always been an intriguing challenge. Herein we report an easy approach to the preparation of a heat-set lanthanide-based metallogel (H6L/Tb gel) with stable luminescence from 5,5′,5′′-(1,3,5-triazine-2,4,6-triyl)tris(azanediyl) triisophthalate (H6L) as a Tb3+ coordinating ligand. The heat-set H6L/Tb gel exhibits luminescence that mostly retains its intensity in the 0–90 °C temperature range and under mechanical stimulus. In addition, the H6L/Tb xerogel is also luminescent in aqueous solution. UV-vis and FT-IR spectroscopy and XRD studies reveal that the stable luminescence of the H6L/Tb gel depends on heat-set-induced strong hydrogen bonding, π–π stacking, and metal–ligand interactions. This study provides a heat-set approach to the preparation of luminescence-stable metallogel materials, such metallogels are potentially useful in anti-counterfeiting and sensing fields, among others.

Graphical abstract: A heat-set lanthanide metallogel capable of emitting stable luminescence under thermal, mechanical and water stimuli

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Article information


Submitted
11 Dec 2019
Accepted
26 Jan 2020
First published
27 Jan 2020

Dalton Trans., 2020, Advance Article
Article type
Paper

A heat-set lanthanide metallogel capable of emitting stable luminescence under thermal, mechanical and water stimuli

B. Zhang, X. Dong, Y. Xiong, Q. Zhou, S. Lu, Y. Liao, Y. Yang and H. Wang, Dalton Trans., 2020, Advance Article , DOI: 10.1039/C9DT04713A

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