Accession Number:

ADA314779

Title:

Photoinduced Electron Transfer in Binary Blends of Conjugated Polymers.

Descriptive Note:

Technical rept.,

Corporate Author:

ROCHESTER UNIV NY DEPT OF CHEMICAL ENGINEERING

Personal Author(s):

Report Date:

1996-09-09

Pagination or Media Count:

5.0

Abstract:

We report the first observation of photoinduced electron transfer between two pi-conjugated polymers in binary systems. Picosecond transient absorption and fluorescent spectroscopies of mixtures of n-type electron accepting polybenzimidazobenzophenanthroline ladder BBL and p-type electron donating polyp-phenylene benzobisthiazole PBZT evidence intermolecular electron transfer when BBL is selectively photoexcited. The results suggest that blends of pi-conjugated polymers are supramolecular materials which have novel features such as delocalized radical ion pairs or diion pairs, novel properties, and implications for organic p-n junction devices, photodiodes, photovoltaic cells, photoreceptors, and molecular electronic devices. Observation of photoinduced electron transfer between the components of the binary blends also implies molecular level miscibility of the blends.

Subject Categories:

  • Polymer Chemistry
  • Atomic and Molecular Physics and Spectroscopy
  • Optics
  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE