Related Experiment Video
Updated: Jul 31, 2026
10:51
The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
Published on: April 10, 2015
12.6K
Amphiphile-Assisted Synthesis of Ruthenium Nanoparticles for Controlled Release and Enhanced Antibacterial Activity
Raúl Gimeno-Ferrero1, Manel Estruch-Blasco1, Eloísa Pajuelo2
1Departamento de Química Orgánica y Farmacéutica, Facultad de Farmacia, Universidad de Sevilla, C/ Profesor García González, 2, Sevilla, 41012, Spain.
Small Methods
|November 19, 2025
Summary
Novel Ruthenium nanoparticles (RuNPs) offer enhanced antibacterial properties. These RuNPs protect ruthenium complexes from degradation and show potent activity against Gram-positive bacteria.
Area of Science:
- Materials Science
- Nanotechnology
- Antimicrobial Agents
Background:
- Ruthenium (Ru) complexes show promise as antibacterial agents.
- Challenges include aqueous degradation and limited bacterial uptake.
- Novel delivery systems are needed to improve Ru-based therapeutics.
Purpose of the Study:
- To develop novel Ruthenium nanoparticles (RuNPs) for enhanced antibacterial efficacy.
- To create RuNPs with controlled release properties.
- To investigate the antibacterial activity of RuNPs against Gram-positive bacteria.
Main Methods:
- Self-assembly of amphiphilic molecules and Ru(III) complexes to form RuNPs.
- Encapsulation of hydrophobic Ru(III) complexes (Ru-TOA, Ru-Benza) within micelle cores.
- Post-synthesis modification with polyethylene glycol (PEG) chains for controlled release.
Main Results:
- Formation of water-stable, monodispersed RuNPs with sizes ranging from ~10 nm to 104.2 nm.
- RuNPs demonstrated improved stability and enhanced bacterial uptake compared to free Ru(III) complexes.
- Controlled Ru release achieved by PEGylation, reducing burst effect.
- Significant antibacterial activity against S. aureus, S. pseudintermedius, and E. faecalis (MIC: 16 mg·L⁻¹, MBC: 32 mg·L⁻¹).
Conclusions:
- Developed RuNPs represent a promising platform for antibacterial agents.
- Controlled release and enhanced stability improve therapeutic potential.
- RuNPs show high efficacy against clinically relevant Gram-positive bacteria.
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