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OLS Field Name OLS Field Data
Main Title Optical and Electrical Properties of Doped Poly-3-Octylthiophene Films.
Author Lidberg, R. L. ; Goswami, K. ; Lovato, M. R. ; Venkatasubramanian, R. ; Engelmann, W. H. ;
CORP Author Nevada Univ., Las Vegas. ;Physical Optics Corp., Torrance, CA.;Environmental Monitoring Systems Lab., Las Vegas, NV.
Publisher 1995
Year Published 1995
Report Number EPA-R-818353; EPA/600/A-95/046;
Stock Number PB95-199683
Additional Subjects Polymer films ; Optical properties ; Electrical properties ; Doped materials ; Reprints ; Absorption ; Electrical resistivity ; Electron transfer ; Electric charge ; Semiconductors(Materials) ; Semiconducting films ; Organic compounds ; Polycyclic sulfur heterocycles ; Spectroscopic analysis ; Electrochemistry ; Sensors ; Thiophene/poly-3-octyl ; P3OT ; Organic dopants
Holdings
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Status
NTIS  PB95-199683 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 09/02/1995
Collation 12p
Abstract
Results of optical absorption and electrical conductivity measurements of solution-doped poly-3-octylthiophene (P3OT) films were studied. Chloroform solutions of P3OT were doped with the organic electron-acceptors, 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) and 7,7,8,8-tetracyanoquinodimethane (TCNQ); and with the inorganic electron acceptor, ferric chloride. Charge transfer was observed in P3OT solutions doped with FeCl3 and DDQ. TCNQ-doped solutions showed no optical evidence of charge transfer. Thin films of doped P3OT were examined at various doping levels. Results are discussed in relation to the electrochemical properties of the prepared films. Usefulness lies in the ability to design and tailor new chemical sensor films which are responsive to various analytes of interest and importance to the U.S. Environmental Protection Agency, based on the analytes' electrochemical characteristics.