Dye-Encapsulated Metal-Organic Frameworks for the Multi-Parameter Detection of Temperature

Area of Science:

• Materials Science
• Chemistry
• Physics

Background:

• Accurate temperature detection is critical across scientific research.
• External environmental interference can compromise temperature measurement accuracy.
• Developing advanced materials for enhanced sensing is an ongoing challenge.

Purpose of the Study:

• To develop a novel porous metal-organic framework (MOF) composite for multi-parameter temperature detection.
• To improve the accuracy and reduce environmental interference in temperature sensing.
• To enhance the quantum efficiency and thermal stability of fluorescent organic dyes.

Main Methods:

• Synthesis and structural characterization of a novel porous metal-organic framework (MOF), Zn-CYMPN.
• Encapsulation of fluorescent organic dyes (DPEE or DPEM) into the Zn-CYMPN pores to create composites.
• Evaluation of the composites' fluorescent emission wavelength and intensity response to temperature changes.

Main Results:

• Successful synthesis of Zn-CYMPN and its composites with DPEE or DPEM.
• Composites exhibited good linear responses of maximum fluorescent emission wavelength and intensity to temperature over a wide range.
• The MOF encapsulation improved the quantum efficiency and thermal stability of the organic dyes.

Conclusions:

• The synthesized Zn-CYMPN⊃DPEE/DPEM composites are highly sensitive thermometers with multi-parameter temperature readouts.
• This approach offers a convenient method for multi-parameter temperature detection with improved accuracy.
• The study demonstrates the potential of MOF-based materials for advanced optical sensing applications.