Optical materials for surface-enhanced Raman applications based on sol-gel encapsulated gold particles

Fatemeh Akbarian; Bruce S. Dunn; Jeffrey I. Zink

doi:10.1117/12.188944

13 October 1994 Optical materials for surface-enhanced Raman applications based on sol-gel encapsulated gold particles

Fatemeh Akbarian, Bruce S. Dunn, Jeffrey I. Zink

Proceedings Volume 2288, Sol-Gel Optics III; (1994) https://doi.org/10.1117/12.188944
Event: SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, 1994, San Diego, CA, United States

Abstract

A photochemical method of producing nanometer gold particles in optically transparent sol-gel silicate materials is described. Organometallic gold precursor compounds are dissolved in the sol and encapsulated in the growing silicate network. Irradiation of the doped monoliths with ultraviolet light causes the photodeposition of gold particles within the silica gel or xerogel. The particles are characterized by their electronic absorption spectra and by TEM. The transparent, porous monoliths are excellent substrates for surface enhanced Raman spectroscopy (SERS). Small molecules such as pyrazine diffuse into the monoliths and are detected by using SERS. The sol-gel matrix stabilizes the gold particles (in comparison to colloids in liquid media) and SERS can be used to detect molecules that penetrate the matrix.

Citation Download Citation

Fatemeh Akbarian, Bruce S. Dunn, and Jeffrey I. Zink "Optical materials for surface-enhanced Raman applications based on sol-gel encapsulated gold particles", Proc. SPIE 2288, Sol-Gel Optics III, (13 October 1994); https://doi.org/10.1117/12.188944

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