Related Experiment Video
Updated: Nov 28, 2025

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings
Published on: April 16, 2017
Strontium-Based MOFs Showing Dual Emission: Luminescence Thermometers and Toluene Sensors
Pedro Leo1, David Briones1, Jose A García2
1Department of Chemical and Environmental Technology, Universidad Rey Juan Carlos, CalleTulipán s/n, 28933 Móstoles, Spain.
Abstract:
This work reports on the preparation and optical characterization of two metal-organic frameworks (MOFs) based on strontium ions and 2-amino-1,4-benzenedicarboxylate (NH2-bdc) ligand: i.e., [Sr(NH2-bdc)(DMF)] (1) and {[Sr(NH2-bdc)(Form)]·H2O} (2) (where DMF = dimethylformamide and Form = formamide). Compound 1 has a 3D architecture built up from the linkage established by NH2-bdc among metal-carboxylate rods, leaving significant microchannels that are largely occupied by DMF molecules coordinated to strontium centers. The solvent molecules play a crucial role in the photoluminescence (PL) properties, which has been deeply characterized by diffuse reflectance and variable-temperature emission. Interestingly, both materials present intriguing photoluminescence (PL) properties involving intense short-lived and long-lasting phosphorescence (LLP), though the latter is especially remarkable for compound 2 with a lifetime of 815 ms at low temperature. Conversely, the strong PL shown by 1 may be successfully exploited due to both its luminescent thermochromism observed in the RT to 10 K range and its solvent-dependent PL sensing capacity, imbuing this material with potential activity as a PL thermometer as well as a toluene detector in water solutions.
More Related Videos
Related Concept Videos
Equipments Used to Measure Body Temperature
Glass-bulb Thermometer:
Glass-bulb thermometers are hollow glass tubes with a bulb tip containing liquid such as ethanol or mercury. Historically, glass bulb mercury thermometers were the standard device to measure body temperature. Today, mercury thermometers are prohibited in many countries due to the hazardous effects of mercury and the risk of exposure if the glass bulb breaks. In general,...
Fluorescence and Phosphorescence: Instrumentation
Thermosensation
Thermometers and Temperature Scales
As many physical properties depend on temperature, the variety of thermometers is...
Photoluminescence: Applications
Gas Thermometers and the Kelvin Scale

