Accession Number:

ADA209679

Title:

Optical Nonlinearity in DNA Films

Descriptive Note:

Annual rept. Jun 1988-May 1989

Corporate Author:

ARIZONA STATE UNIV TEMPE

Personal Author(s):

Report Date:

1989-06-28

Pagination or Media Count:

8.0

Abstract:

We have used Raman and Brillouin scattering to study the role of water, ions base sequence, and crystal morphology on the structure and dynamics of DNA. We find that the interactions between DNA double helices as measured by the frequency of Raman bands in the solid state, elastic properties, internal geometry conformation and optical properties are all dominated by the specific counter ion, changing in a systematic manner with counter ion hydrated radius. The primary hydration shell relaxes at about 2.5 GHz and consists of about one monolayer of water molecules attached to the DNA by one hydrogen bond, on average. The hyperpolarizibility of DNA films is about 1 of that of quartz.

Subject Categories:

  • Genetic Engineering and Molecular Biology
  • Organic Chemistry
  • Physical Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE