Structural Characterization and Bioactivity of a Titanium(IV)-Oxo Complex Stabilized by Mandelate Ligands

Area of Science:

• Inorganic Chemistry
• Materials Science
• Biomaterials

Background:

• Titanium-oxo complexes (TOCs) are typically studied for structure and photocatalysis.
• Exploration into the biological activities of TOCs remains an emerging area.
• This research investigates a novel TOC for potential antimicrobial applications.

Purpose of the Study:

• To synthesize and characterize a new titanium-oxo complex, [Ti8O2(OiPr)20(man)4] (1).
• To evaluate the antimicrobial efficacy of compound (1) and its composites.
• To assess the biocompatibility of the developed composite materials.

Main Methods:

• Synthesis of [Ti8O2(OiPr)20(man)4] (1) from titanium(IV) isopropoxide and mandelic acid.
• Structural determination via single-crystal X-ray diffraction and spectroscopic analysis.
• Incorporation of (1) into polymethyl methacrylate (PMMA) to form composite materials.
• Antimicrobial activity testing against Gram-positive and Gram-negative bacteria.
• Cytotoxicity assessment using MTT assays on L929 murine fibroblast cell line.

Main Results:

• The novel titanium-oxo complex [Ti8O2(OiPr)20(man)4] (1) was successfully synthesized and structurally characterized.
• Compound (1) and its PMMA composites demonstrated significant antimicrobial activity against both Gram-positive and Gram-negative bacterial strains.
• MTT assays confirmed that the PMMA + (1) composites exhibit no cytotoxicity on L929 murine fibroblast cells.

Conclusions:

• The synthesized titanium-oxo complex (1) is a potent antimicrobial agent.
• Composite materials incorporating (1) show potential for developing effective antimicrobial coatings.
• The developed composites are biocompatible, suggesting broad applicability in medical and material science fields.