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Luminescence Lifetime Imaging of O2 with a Frequency-Domain-Based Camera System

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Published on: December 16, 2019

A luminescent mixed-lanthanide-organic framework sensor for decoding different volatile organic molecules.

Chao Zhan¹, Sha Ou, Chao Zou

¹Center for Chemistry of High-Performance and Novel Materials, Department of Chemistry, Zhejiang University , Hangzhou, 310027, P. R. China.

Analytical Chemistry

|June 4, 2014

Summary

This summary is machine-generated.

This study introduces a new luminescent sensor using lanthanide-organic frameworks (LOFs) for detecting volatile organic molecules (VOMs). The sensor offers a self-calibrating, highly differentiable, and stable method for VOM identification based on unique luminescence ratios.

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Area of Science:

Materials Science
Chemistry
Nanotechnology

Background:

Lanthanide-organic frameworks (LOFs) offer tunable properties for sensing applications.
Developing selective and stable sensors for volatile organic molecules (VOMs) remains a challenge.

Purpose of the Study:

To construct novel microporous LOFs using a flexible tripodal polyaromatic acid (H3TCM) and lanthanide ions (Ln).
To investigate the luminescence properties and energy transfer mechanisms within these LOFs.
To develop a VOM sensor based on the unique luminescent response of mixed Eu(x)Tb(1-x)-TCM.

Main Methods:

Synthesis of lanthanide-organic frameworks [LnTCM(H2O)2]·3DMF·H2O (Ln-TCM) using H3TCM and lanthanide ions (La, Eu, Tb).
Characterization of LOF structure and luminescence properties.
Investigation of resonance energy transfer from TCM to Eu(3+) and Tb(3+) ions.
Fabrication and testing of Eu(x)Tb(1-x)-TCM as a sensor for VOMs.

Main Results:

High-efficient resonance energy transfer was observed from TCM to lanthanide ions in the constructed LOFs.
Mixed Eu(x)Tb(1-x)-TCM exhibited tunable pores and modulated energy transfer and allocation.
The Eu(x)Tb(1-x)-TCM sensor demonstrated the ability to decode different VOMs via a unique emission intensity ratio.
A self-referencing luminescence strategy provided self-calibrating, highly differentiable, and stable signals for VOM detection.

Conclusions:

The developed Eu(x)Tb(1-x)-TCM LOFs are effective platforms for VOM sensing.
The self-referencing luminescence intensity ratio strategy offers a robust method for VOM identification.
These findings highlight the potential of tailored LOFs in practical sensing applications.