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Synthesis of Near-Infrared Emitting Gold Nanoclusters for Biological Applications
Published on: March 22, 2020
Enhanced emission of silver nanoclusters through quantitative phase transfer
Isabel Díez1, Hua Jiang, Robin H A Ras
1Molecular Materials group, Department of Applied Physics, Helsinki University of Technology/Aalto University, Puumiehenkuja 2, 02150 Espoo, Finland.
Summary
Fluorescent silver nanoclusters were successfully transferred from water to organic solutions. This transfer enhances their emission properties and purity, expanding potential applications for this unique fluorophore.
Area of Science:
- Nanotechnology
- Materials Science
- Photochemistry
Background:
- Silver nanoclusters (AgNCs) exhibit unique fluorescence properties.
- Previous work focused on aqueous solutions of AgNCs stabilized by poly(methacrylic acid).
- Sensing applications of these aqueous AgNCs have been explored.
Purpose of the Study:
- To prepare organic solutions of fluorescent silver nanoclusters.
- To investigate the transfer of AgNCs from aqueous to organic phases.
- To evaluate the impact of organic phase transfer on AgNC properties.
Main Methods:
- Quantitative transfer of AgNCs from aqueous to immiscible organic solvents.
- Characterization of AgNCs in the organic phase.
Main Results:
- Successful preparation of fluorescent silver nanoclusters in organic solutions.
- Enhanced emission properties of AgNCs in the organic phase.
- Increased purity of AgNCs observed in the organic solvent.
Conclusions:
- Organic solutions of fluorescent AgNCs can be prepared via quantitative transfer.
- Transfer to organic solvents improves emission and purity.
- This method broadens the application scope of silver nanocluster fluorophores.
