A Robust Mixed-Lanthanide PolyMOF Membrane for Ratiometric Temperature Sensing

Area of Science:

• Materials Science
• Chemical Engineering
• Biotechnology

Background:

• Accurate, noninvasive temperature sensing is crucial across biology, chemistry, and engineering.
• Existing temperature sensors often face limitations in harsh environments or require invasive methods.

Purpose of the Study:

• To develop a novel membranous ratiometric luminescent thermometer with enhanced mechanical and stability properties.
• To utilize a photoinduced post-synthetic copolymerization strategy for creating a mixed-lanthanide polyMOF membrane.

Main Methods:

• A photoinduced post-synthetic copolymerization strategy was employed to synthesize a mixed-lanthanide polyMOF membrane.
• The membrane's luminescent properties and temperature sensing capabilities were investigated.
• Mechanical properties (flexibility, elasticity) and stability under various conditions (humidity, pH 0-14) were evaluated.

Main Results:

• The synthesized polyMOF membrane retained the temperature sensing behavior of the Ln-MOF powder.
• The membrane demonstrated excellent mechanical properties, including flexibility and elasticity.
• Remarkable stability was observed under harsh conditions such as high humidity and extreme pH levels (0-14).

Conclusions:

• A simple and effective strategy for forming polyMOF membranes was established.
• The developed luminescent thermometer membrane shows significant potential for practical applications in diverse and extreme environments.
• This work advances the utility of lanthanide-metal-organic framework (Ln-MOF)-based luminescent thermometers.