A luminescent metal-organic framework for sensing methanol in ethanol solution

Area of Science:

• Materials Science
• Chemistry
• Nanotechnology

Background:

• Metal-organic frameworks (MOFs) offer tunable properties for various applications.
• Luminescent MOFs are of interest for sensing and optical devices.
• Developing selective sensors for volatile organic compounds (VOCs) is crucial.

Purpose of the Study:

• To synthesize and characterize a new luminescent zinc-based metal-organic framework (Zn-MOF).
• To investigate the luminescence response of the synthesized Zn-MOF to different solvents.
• To evaluate the potential of the Zn-MOF as a sensor for methanol detection.

Main Methods:

• Hydrothermal synthesis of the Zn-MOF using a semi-rigid ligand (H3pcoip).
• Investigation of luminescence properties in methanol, ethanol, and water.
• Testing the sensing capabilities for methanol in ethanol solutions at varying concentrations.

Main Results:

• A novel luminescent Zn-MOF was successfully synthesized.
• The Zn-MOF exhibited a unique luminescence response to methanol, distinct from ethanol and water.
• A turn-on luminescence switching property was observed, triggered by methanol.
• High sensitivity was achieved, detecting methanol concentrations as low as 2 × 10(-7) in ethanol.

Conclusions:

• The synthesized Zn-MOF demonstrates excellent selectivity and high sensitivity for methanol detection.
• This Zn-MOF shows significant potential for application as a chemical sensor in ethanol solutions.
• The findings contribute to the development of advanced luminescent materials for chemical sensing.