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Hybrid thin films derived from poly(acrylic)/ colloidal silica/lanthanide metal complex
Yang-Yen Yu1, Wen-Chen Chien, Shih-Yu Chen
1Department of Materials Engineering, Mingchi University of Technology, Taishan, Taipei Hsien 243, Taiwan.
Journal of Nanoscience and Nanotechnology
|November 18, 2009
Summary
This study developed novel poly(acrylic)/SiO2/EuL3 x 2H2O hybrid thin films. Incorporating silica improved europium (Eu3+) dispersion, enhanced thermal stability, and controlled optical properties for potential applications.
Area of Science:
- Materials Science
- Nanotechnology
- Photochemistry
Background:
- Hybrid organic-inorganic materials offer tunable properties.
- Lanthanide complexes, like Eu3+, are crucial for luminescence applications.
- Controlling material morphology and optical characteristics is key for advanced devices.
Purpose of the Study:
- To synthesize and characterize novel poly(acrylic)/SiO2/EuL3 x 2H2O hybrid thin films.
- To investigate the effect of silica content on the structural, optical, and thermal properties.
- To explore the potential for controlling refractive index and luminescence behavior.
Main Methods:
- Sol-gel reaction, thermal polymerization, and spin coating.
- Incorporation of colloidal silica (SiO2) and europium (Eu3+) complexes.
- Characterization using TEM, PL, UV-Vis, n&k analysis, TGA, DSC, SEM, SCMS, and AFM.
Main Results:
- Well-dispersed SiO2 and Eu3+ in hybrid films without aggregation.
- Enhanced Eu3+ luminescence with reduced concentration quenching due to SiO2.
- Tunable refractive index and good transparency in the visible spectrum.
- Increased thermal stability (pyrolysis temperature and T(g)) with higher SiO2 content.
- Flatter film surfaces achieved with poly-functional acrylates.
Conclusions:
- The developed hybrid thin films exhibit promising optical and thermal properties.
- Silica incorporation effectively enhances Eu3+ luminescence and material stability.
- The tunable refractive index and surface morphology open avenues for optical and electronic applications.
