Fabrication of functionalized gold nanoparticles by femtosecond laser ablation in aqueous solutions of biopolymers

S Besner; A. V. Kabashin; M. Meunier; F. M. Winnik

doi:10.1117/12.628885

12 October 2005 Fabrication of functionalized gold nanoparticles by femtosecond laser ablation in aqueous solutions of biopolymers

S Besner, A. V. Kabashin, M. Meunier, F. M. Winnik

Author Affiliations +

Proceedings Volume 5969, Photonic Applications in Biosensing and Imaging; 59690B (2005) https://doi.org/10.1117/12.628885
Event: Photonics North, 2005, Toronto, Canada

Abstract

Femtosecond laser ablation of a gold plate in aqueous solutions has been used to form colloidal gold nanoparticles. Using different chemical environments during the fabrication, this method makes it possible to functionalize nanomaterials by an appropriate capping ligand. In particular, we were able to control the size and the reactivity of gold particles by using different polymers (dextran and polyethylene glycol). The size of the nanoparticles, measured by transmission electron microscopy (TEM), was found to be as low as 5 nm, in some cases. The addition of these capping agents also significantly improved the long term stability of gold particles. The produced nanoparticles exhibited a strong absorption band near 520 nm due to the surface plasmon resonance and a photoluminescence signal in the violet-blue spectral range. The functionalized nanoparticles produced are of significance in view of their bio-imaging and bio-sensing applications.

Citation Download Citation

S Besner, A. V. Kabashin, M. Meunier, and F. M. Winnik "Fabrication of functionalized gold nanoparticles by femtosecond laser ablation in aqueous solutions of biopolymers", Proc. SPIE 5969, Photonic Applications in Biosensing and Imaging, 59690B (12 October 2005); https://doi.org/10.1117/12.628885

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available