Synthetically modified BSA-based heterometallic nanoparticles facilitating energy and/or electron transfer events

Area of Science:

• Biomaterials Science
• Nanotechnology
• Analytical Chemistry

Background:

• Bovine serum albumin (BSA) offers diverse binding sites for functional material development.
• Facile methods for co-loading BSA nanoparticles (BNP) with luminescent and catalytic functions remain underexplored.

Purpose of the Study:

• To explore facile methods for co-loading BSA nanoparticles (BNP) with luminescent and catalytic functions.
• To develop a sensing and catalytic system using co-loaded BNP.

Main Methods:

• Co-loading of a luminescent lipophilic Pt(II) complex and redox-active Cu(II) ions into BSA nanoparticles.
• Utilizing the Pt(II) complex as a luminescent probe for Cu(II) ion detection and subsequent reduction.
• Demonstrating laccase-like activity of copper ions bound to BNP via adrenaline oxidation.

Main Results:

• The luminescent Pt(II) complex in BNP visualizes Cu(II) ion binding and reduction to Cu(I).
• Co-loaded BNP exhibits mutual influence between Cu(I) and Pt(II) centers, affecting luminescence and electrochemical behavior.
• Modification of the co-loading method tunes copper ion loading, luminescence, and laccase-like activity.

Conclusions:

• Co-loading redox-active copper ions and luminescent Pt(II) complex into BNP integrates sensing and catalytic activities.
• The synthetic method modification allows tuning of sensing and catalytic functionalities.
• This approach offers a versatile route for developing multifunctional nanomaterials.