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) : Jenekhe, S. A. ; De Paor, L. R.

PDF Url : ADA314779

Report Date : 09 SEP 1996

Pagination or Media Count : 5

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) poly(benzimidazobenzophenanthroline ladder) (BBL) and p-type (electron donating) poly(p-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.

Descriptors :   *POLYMERS, *ELECTRON TRANSFER, *BINARY COMPOUNDS, TRANSIENTS, IONS, ZIRCONIUM COMPOUNDS, FLUORESCENCE, SPECTROSCOPY, MOLECULAR STATES, LEAD TITANATES, ELECTRON DONORS, MIXING, SEMICONDUCTOR JUNCTIONS, MOLECULE MOLECULE INTERACTIONS, N TYPE SEMICONDUCTORS, ABSORPTION, ELECTRON ACCEPTORS, PHOTODIODES, PHOTOVOLTAIC EFFECT, P TYPE SEMICONDUCTORS, MOLECULAR ELECTRONICS, PHOTORECEPTORS.

Subject Categories : Polymer Chemistry
      Atomic and Molecular Physics and Spectroscopy
      Optics
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE