A novel Lu3+ fluorescent nano-chemosensor using new functionalized mesoporous structures

Area of Science:

• Materials Science
• Analytical Chemistry
• Nanotechnology

Background:

• Mesoporous silica materials offer high surface area and ordered structures for chemical sensing applications.
• Lutetium (Lu3+) detection is crucial in various fields, including nuclear medicine and catalysis.
• Developing selective and sensitive fluorescent chemosensors remains a key challenge in analytical chemistry.

Purpose of the Study:

• To design and synthesize a novel fluorescent chemosensor for selective Lu3+ detection.
• To investigate the structural integrity and sensing properties of the developed material.
• To evaluate the performance of the chemosensor in terms of sensitivity, selectivity, and operational range.

Main Methods:

• Synthesis of 8-hydroxyquinoline functionalized mesoporous silica (LUS-SPS-Q) via post-grafting.
• Characterization of the material's structure using relevant techniques (e.g., microscopy, spectroscopy).
• Fluorescence spectroscopy to quantify Lu3+ ion concentration and assess selectivity against other ions.

Main Results:

• The synthesized LUS-SPS-Q maintained its ordered mesoporous structure.
• The material demonstrated selective fluorescence enhancement upon binding with Lu3+ ions.
• The chemosensor exhibited a linear response in the range of 1.6×10(-7) to 1.0×10(-5) mol L(-1) with a limit of detection of 8.2×10(-8) mol L(-1) within a pH range of 3.3-8.3.

Conclusions:

• The developed 8-hydroxyquinoline functionalized mesoporous silica is an effective fluorescent chemosensor for Lu3+.
• The sensor's selectivity and sensitivity are attributed to the fluorophore moiety and strong covalent binding with Lu3+.
• This material shows potential for practical applications in Lu3+ ion detection.