Abstract

Charges are produced in organic materials homogeneously by a multiphoton ionization mechanism. It is then possible to determine wavelength dependent ionization cross-sections at energies where the sample is opaque, but using light to which the sample is transparent. The transport of charges in organic materials is detected by a new interferometric technique. Finally the act of photoinduced charge-transfer is being probed by fluorescence lifetime measurements on the picosecond time scale.

  Funding Agency

Agency
National Institute of Health (NIH)
Institute
National Institute of General Medical Sciences (NIGMS)
Type
Research Project (R01)
Project #
5R01GM010865-26
Application #
3268169
Study Section
Biophysics and Biophysical Chemistry A Study Section (BBCA)
Project Start
1976-06-01
Project End
1986-06-30
Budget Start
1985-07-01
Budget End
1986-06-30
Support Year
26
Fiscal Year
1985
Total Cost
Indirect Cost

  Institution

Name
Cornell University
Department
Type
Schools of Arts and Sciences
DUNS #
City
Ithaca
State
NY
Country
United States
Zip Code
14850

  Publications

Shreve, A P; Trautman, J K; Frank, H A et al. (1991) Femtosecond energy-transfer processes in the B800-850 light-harvesting complex of Rhodobacter sphaeroides 2.4.1. Biochim Biophys Acta 1058:280-8
Trautman, J K; Shreve, A P; Violette, C A et al. (1990) Femtosecond dynamics of energy transfer in B800-850 light-harvesting complexes of Rhodobacter sphaeroides. Proc Natl Acad Sci U S A 87:215-9