A heat-set lanthanide metallogel capable of emitting stable luminescence under thermal, mechanical and water stimuli
发布时间：2021-03-01 浏览人次：1371来源：湖北省地质实验测试中心
摘要：Preparing luminescence-stable lanthanide materials in a facile manner has always been an intriguing chal_x005f_x005f_x0002_lenge. 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
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.
关键词：lanthanide materials, lanthanide-based metallogel, π–π stacking, metal–ligand interactions
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