Fluorescence spectra, quantum yields, intensity and anisotropy decays of oligothiophenes and oligophenylevinylenes with varying chain length are studied in the dissolved state in the ultrathin disordered and anisotropic films. The strong increase of quantum yield with disorder is a result of increasing density of luminescence centers. Fluorescence spectra of OPV films and aggregates are consistent with several distinct components, which are due to emission from traps below the exciton band.

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
Biotechnology Resource Grants (P41)
Project #
3P41RR008119-06
Application #
6282909
Study Section
Project Start
1998-04-01
Project End
1999-03-31
Budget Start
1997-10-01
Budget End
1998-09-30
Support Year
6
Fiscal Year
1998
Total Cost
Indirect Cost
Name
University of Maryland Baltimore
Department
Type
DUNS #
003255213
City
Baltimore
State
MD
Country
United States
Zip Code
21201
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