Recent Advances in Developing Lanthanide Metal-Organic Frameworks for Ratiometric Fluorescent Sensing

Area of Science:

• Materials Science
• Chemistry
• Nanotechnology

Background:

• Fluorescent probes are crucial for optical sensor systems due to rapid responses.
• Ratiometric fluorescent sensors offer superior sensitivity and visual screening over single-emission systems by analyzing emission intensity ratios.
• Lanthanide metal-organic frameworks (LnMOFs) are versatile luminescent materials suitable for ratiometric sensing.

Purpose of the Study:

• To review the fundamental concepts and optical characteristics of dual-emitting LnMOFs.
• To discuss construction strategies and sensing mechanisms of LnMOF-based ratiometric fluorescent sensors.
• To explore future prospects and challenges in the field.

Main Methods:

• Literature review focusing on dual-emitting lanthanide metal-organic frameworks (LnMOFs).
• Analysis of ratiometric fluorescent sensing mechanisms.
• Discussion of LnMOF design principles and construction strategies.

Main Results:

• Dual-emitting LnMOFs serve as effective ratiometric fluorescent sensors.
• LnMOFs provide multiple luminescence sources (lanthanide ions, ligands, guest species).
• Ratiometric sensing with LnMOFs enables quantitative analysis via emission intensity ratios.

Conclusions:

• Dual-emitting LnMOFs represent a promising platform for highly sensitive optical sensing.
• Further research is needed to address challenges and explore new design directions for LnMOF sensors.
• LnMOF-based ratiometric sensors offer significant potential for various analytical applications.