Accession Number:

AD0776661

Title:

Picosecond Flash Photolysis and Spectroscopy: 3,3'-Diethyloxadicarbocyanine Iodide (DODCI).

Descriptive Note:

Technical rept. 1 Apr 73-28 Feb 74,

Corporate Author:

WASHINGTON STATE UNIV PULLMAN DEPT OF CHEMISTRY

Personal Author(s):

• Magde,Douglas
• Windsor,Maurice W.

Report Date:

1974-03-01

Pagination or Media Count:

16.0

Abstract:

The authors demonstrate transient absorption spectroscopy with picosecond time resolution and nanometer spectral resolution over the entire visible region. To resolve multiple discrepancies in the literature, they studied 3,3-diethyloxadicarbocyanine iodide, measuring both excited singlet lifetime and ground state depletion and recovery. The kinetics of the two processes are the same. They report fluorescence yield determinations and comment on the controversy over photoisomer generation. Modified author abstract

Descriptors:

• *Visible spectra
• *Cyanine
• Dyes
• Absorption spectra
• Electron transitions
• Quantum efficiency
• Molecular energy levels
• Relaxation time
• Fluorescence

Subject Categories:

• Radiation and Nuclear Chemistry
• Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE