基于铕/铽有机功能化介孔二氧化硅的发光温度计

Luminescent thermometer based on Eu /Tb -organic-functionalized mesoporous silica.

作者信息

Kaczmarek Anna M, Esquivel Dolores, Laforce Brecht, Vincze Laszlo, Van Der Voort Pascal, Romero-Salguero Francisco J, Van Deun Rik

机构信息

L3 - Luminescent Lanthanide Lab, Department of Chemistry, Ghent University, Ghent, Belgium.

Departamento de Quimica Organica, Instituto Universitario de Investigacion en Quimica Fina y Nanoquimica IUIQFN, Facultad de Ciencias, Universidad de Córdoba, Córdoba, Spain.

出版信息

Luminescence. 2018 May;33(3):567-573. doi: 10.1002/bio.3447. Epub 2018 Jan 25.

DOI:10.1002/bio.3447

PMID:29369466

Abstract

In this work we investigate a mesoporous silica (MS) decorated with dipyridyl-pyridazine (dppz) ligands and further grafted with a mixture of Eu /Tb ions (28.45%:71.55%), which was investigated as a potential thermometer in the 10-360 K temperature range. The MS material was prepared employing a hetero Diels-Alder reaction: 3,6-di(2-pyridyl)-1,2,4,5-tetrazine was reacted with the double bonds of vinyl-silica (vSilica) followed by an oxidation procedure. We explore using the dppz-vSilica material to obtain visible emitting luminescent materials and for obtaining a luminescent thermometer when grafted with Eu /Tb ions. For the dppz-vSilica@Eu,Tb material absolute sensitivity S of 0.011 K (210 K) and relative sensitivity S of 1.32 %K (260 K) were calculated showing good sensing capability of the material. Upon temperature change from 10 K to 360 K the emission color of the material changed gradually from yellow to red.

摘要

在这项工作中，我们研究了一种用联吡啶哒嗪（dppz）配体修饰并进一步接枝了铕/铽离子混合物（28.45%:71.55%）的介孔二氧化硅（MS），该材料在10 - 360 K温度范围内被研究作为一种潜在的温度计。MS材料采用杂环狄尔斯-阿尔德反应制备：3,6-二（2-吡啶基）-1,2,4,5-四嗪与乙烯基二氧化硅（vSilica）的双键反应，随后进行氧化过程。我们探索使用dppz-vSilica材料来获得可见发光的发光材料，并在接枝铕/铽离子时获得发光温度计。对于dppz-vSilica@Eu,Tb材料，计算出其绝对灵敏度S为0.011 K（210 K），相对灵敏度S为1.32 %K（260 K），表明该材料具有良好的传感能力。当温度从10 K变化到360 K时，材料的发射颜色从黄色逐渐变为红色。