Format

Send to

Choose Destination
See comment in PubMed Commons below
J Phys Chem A. 2009 Apr 23;113(16):4437-44. doi: 10.1021/jp811084x.

Surface-enhanced vibrational raman optical activity: a time-dependent density functional theory approach.

Author information

  • 1Department of Chemistry, The Pennsylvania State University, 104 Chemistry Building, University Park, Pennsylvania 16802, USA. jensen@chem.psu.edu

Abstract

In this work we present the first simulations of the surface-enhanced Raman optical activity (SEROA) using time-dependent density functional theory (TDDFT). A consistent treatment of both the chemical and electromagnetic enhancements is achieved by employing a recently developed approach based on a short-time approximation for the Raman and ROA cross-sections. As an initial application we study a model system consisting of adenine interacting with a Ag(20) cluster. Because both the silver cluster and adenine in the absorption geometry are achiral, the chiroptical properties are due to the interactions between the two systems. Our results show that the total enhancement is on the order of 10(4) both for SEROA and SERS. However, the chemical enhancement is found to be larger for SEROA than for SERS. The results presented here show that SEROA can be a useful approach for studying induced chirality in small metal clusters due to the absorption of molecules.

[PubMed]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for American Chemical Society
    Loading ...
    Write to the Help Desk