Applicability of Reddish-Orange Light Emitting Samarium (III) Complexes for Biomedical and Multifunctional...

Area of Science:

• Inorganic Chemistry
• Materials Science
• Photochemistry

Background:

• Samarium (III) complexes are known for their luminescent properties.
• Developing novel complexes with enhanced optical and biological characteristics is crucial for advanced applications.

Purpose of the Study:

• To synthesize and characterize novel samarium (III) complexes.
• To investigate the influence of ancillary ligands on the optical and biological properties of samarium (III) complexes.
• To explore potential applications in optoelectronics, lighting, and biological assays.

Main Methods:

• Synthesis of six samarium (III) complexes using the grinding technique.
• Characterization via elemental analysis, infrared, UV-Vis, NMR, TG/DTG, and photoluminescence spectroscopy.
• Evaluation of optical properties including luminescence, energy bandgap, CIE color coordinates, and quantum yield.
• Assessment of antioxidant and antimicrobial activities.

Main Results:

• All synthesized complexes exhibited reddish-orange luminescence attributed to the 4G5/2 → 6H7/2 transition of samarium (III) ions.
• Complexes with ancillary ligands (S2-S6) showed improved decay time, quantum yield, luminescence, energy bandgap, and biological properties compared to the parent complex (S1).
• The determined optical parameters (color purity, CIE coordinates, CCT) provide insights into their suitability for lighting and optoelectronic devices.

Conclusions:

• Ancillary ligands significantly enhance the photophysical and biological properties of samarium (III) complexes.
• The synthesized complexes demonstrate potential for applications in optoelectronics and lighting systems.
• Further investigation into their biological activities suggests promise for use in biomedical applications.