Second harmonic generation of chiral-modified silver nanoparticles

Yue Tao; Gabriela Aldea-Nunzi; Sanyasi Rao Bobbara; Jean-Michel Nunzi

doi:10.1117/12.2033655

11 October 2013 Second harmonic generation of chiral-modified silver nanoparticles

Yue Tao, Gabriela Aldea-Nunzi, Sanyasi Rao Bobbara, Jean-Michel Nunzi

Proceedings Volume 8915, Photonics North 2013; 891513 (2013) https://doi.org/10.1117/12.2033655
Event: Photonics North 2013, 2013, Ottawa, Canada

Abstract

Various approaches for the optical detection of chiral compounds have been developed due to their natural optical activity. Since the advantages of second harmonic generation (SHG) on noble-metal nanoparticles (NPs) have been observed, it would be interesting to study the nonlinear phenomena from chiral compounds attached Ag NPs. In the present work, we fabricated chiral-modified Ag NPs based on the self-assembly process of cysteine and Ag, and carried out the investigation on SHG on modified and unmodified Ag NPs. For modified Ag NPs, either L-Cysteine (L-C) or D-Cysteine (D-C), as a pair of enantiomers, was applied on top of the Ag NPs. The resulting chiral-modified monolayers of L-C/Ag NPs and D-C/Ag NPs exhibit a reversed optical rotation difference (ORD) at linearly ±45° polarization of SH, where no such difference exists for Ag NPs alone. SHG efficiently probes and discriminates L-C from D-C monolayers on the modified Ag NPs, which constitutes a simple and sensitive optical diagnostic of chiral molecules.

Citation Download Citation

Yue Tao, Gabriela Aldea-Nunzi, Sanyasi Rao Bobbara, and Jean-Michel Nunzi "Second harmonic generation of chiral-modified silver nanoparticles", Proc. SPIE 8915, Photonics North 2013, 891513 (11 October 2013); https://doi.org/10.1117/12.2033655

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