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Updated: Jan 28, 2026
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Gold Nanoparticle Synthesis
Published on: July 10, 2021
15.9K
Photocrosslinking of collagen using Ru(II)-polypyridyl complex functionalized gold nanoparticles
Nandhini Thangavel1, Indhumathi Jayakumar2, Mukund Ravichandran2
1Inorganic and Physical Chemistry Laboratory, CSIR-Central Leather Research Institute, Adyar, Chennai 600 020, India.
Summary
Newly synthesized gold nanoparticles conjugated with Ruthenium(II) complexes (NCs) stabilize collagen by crosslinking, hindering degradation. This offers potential for developing new photocatalysts for biomedical applications, particularly in corneal treatments.
Area of Science:
- Biomaterials Science
- Nanotechnology
- Biochemistry
Background:
- Collagen, an extracellular matrix protein, is vital for biomedical devices but prone to degradation.
- Stabilizing collagen is crucial for enhancing its utility in various biological applications.
Purpose of the Study:
- To synthesize and characterize gold nanoparticles conjugated with Ruthenium(II) complexes (NCs).
- To investigate the stabilization of collagen using these NCs under different conditions.
- To explore the potential of NCs as photocatalysts for collagen crosslinking.
Main Methods:
- Synthesis and characterization of gold nanoparticles conjugated with Ru(II) complexes.
- Dynamic Light Scattering (DLS) for nanoparticle size analysis.
- Fibrillation assays, Circular Dichroism (CD), Infra-Red (IR) spectroscopy, and SDS-PAGE for collagen stability and structural integrity assessment.
Main Results:
- NCs demonstrated effective collagen crosslinking, significantly hindering enzymatic digestion.
- Photo-irradiation with NCs delayed collagen fibrillation, while persulfate accelerated it.
- Spectroscopic studies confirmed that the triple helical structure of collagen remained unaltered post-photo-irradiation.
- Neither gold nanoparticles nor Ru(II) complexes alone provided collagen stabilization.
Conclusions:
- The study successfully demonstrated the efficacy of NCs in stabilizing collagen through crosslinking.
- The findings highlight the potential of NCs as novel photocatalysts for collagen modification.
- This research may pave the way for advanced photocatalyst development for corneal applications.
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