Related Experiment Video
Updated: Jun 7, 2025
High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings
Published on: April 16, 2017
Highly Sensitive Solid Ratiometric Luminescent Thermometer Based on N,C-Chelating Four-Coordinate Organoboron
Ying Sun1, Zhen Wang1, Hao Xu1
1State Key Laboratory of Applied Organic Chemistry (Lanzhou University), Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Lanzhou Magnetic Resonance Center, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China.
Researchers developed a novel single-component organic material for ratiometric thermometers. This luminescent thermometer demonstrates high sensitivity and a wide temperature range, offering a new approach for photonic thermometry.
Area of Science:
- Materials Science
- Chemistry
- Physics
Background:
- Developing single-component organic solid-state luminophores for ratiometric thermometers is challenging.
- Ratiometric thermometry requires materials that exhibit predictable changes in luminescence with temperature.
- Organic materials offer potential for cost-effective and versatile sensor applications.
Purpose of the Study:
- To synthesize and characterize novel N,C-chelated tetra-coordinated organoboron compounds.
- To evaluate the potential of these compounds as single-component ratiometric thermometers.
- To investigate the mechanism behind the temperature-dependent luminescence properties.
Main Methods:
- Synthesis of N,C-chelated tetra-coordinated organoboron compounds.
- Structural characterization using spectroscopic and crystallographic techniques.
- Luminescence spectroscopy to assess temperature-dependent behavior (sensitivity, range, reversibility).
Main Results:
- Successful synthesis of a series of organoboron compounds.
- Identification of BN2Br as a promising luminescent thermometer material.
- BN2Br exhibits high temperature sensitivity (3.67% K-1) over a wide range (120-280 K) with good reversibility.
- Temperature-dependent intermolecular stacking was identified as the key mechanism.
Conclusions:
- N,C-chelated tetra-coordinated organoboron compounds are viable for single-component ratiometric thermometry.
- BN2Br demonstrates excellent performance as a luminescent thermometer.
- The findings provide insights for designing advanced photonic thermometers.
