Accession Number:

AD0781925

Title:

Picosecond Flash Photolysis and Spectroscopy: Bis-(4-Dimethylaminodithiobenzel)-Ni(II), (BDN).

Descriptive Note:

Technical rept.,

Corporate Author:

WASHINGTON STATE UNIV PULLMAN DEPT OF CHEMISTRY

Personal Author(s):

• Magde,Douglas
• Bushaw,Bruce A.
• Windsor,M. W.

Report Date:

1974-06-01

Pagination or Media Count:

20.0

Abstract:

The transient absorption spectrum of an electronically excited dithiene, bis-4-dimethylaminodithiobenzil-NiII, BDN, was measured with 10 ps temporal resolution and 1 nm wavelength resolution. For a series of heavy atom solvents, both the ground state and the excited state spectra remained constant while the decay kinetics of the excited state absorption, as well as the recovery from ground state bleaching, varied. The excited state spectrum can plausibly be fit by a particular one electron transition between previously calculated molecular orbitals, although this clearly does not prove that these orbitals provide the best description for the excited states. The authors comment on three possibilities within the framework of the ground state virtual orbital picture. The recently developed techniques will be generally applicable in probing the photodynamics of presently intractable molecular species. The significance of the data for laser mode-locking is discussed. Modified author abstract

Descriptors:

• *Visible spectra
• *Nickel compounds
• *Metal complexes
• Absorption spectra
• Electron transitions
• Spectrum analysis
• Mode locked lasers
• Organic sulfur compounds
• Excitation
• Molecular orbitals
• Pulses

Subject Categories:

• Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE