Novel core-shell structure microspheres based on lanthanide complexes for white-light emission and fluorescence...

Area of Science:

• Materials Science
• Nanotechnology
• Inorganic Chemistry

Background:

• Lanthanide complexes offer unique luminescent properties.
• Core-shell nanostructures provide enhanced material functionalities.
• Development of selective sensors for analytes like Cu(2+) is crucial.

Purpose of the Study:

• To synthesize novel core-shell structured materials using lanthanide complexes and silica microspheres.
• To investigate the optical properties and potential applications in white-light devices.
• To evaluate the sensing capabilities for acetone and Cu(2+) cations.

Main Methods:

• Solvothermal synthesis of SiO2@Ln-dpa core-shell materials.
• Electron microscopy for structural and morphological characterization.
• Optical spectroscopy for luminescence analysis.
• Sensing experiments to determine selectivity and sensitivity.

Main Results:

• Successfully prepared spherical SiO2@Ln-dpa nanoparticles with uniform size and core-shell structure.
• Demonstrated excellent optical performance, with SiO2@(Dy:Eu)-dpa showing potential for white-light emission.
• Developed highly selective and sensitive sensors for acetone and Cu(2+) cations.
• Observed a >20% increase in the quenching effect coefficient for Cu(2+) sensing compared to pure lanthanide complexes.

Conclusions:

• The synthesized core-shell materials exhibit promising optical properties for lighting applications.
• These core-shell nanostructures function as effective and enhanced sensors for acetone and Cu(2+).
• The improved performance highlights the advantage of integrating lanthanide complexes with silica microspheres for sensing applications.