Award Date

1-1-1995

Degree Type

Thesis

Degree Name

Master of Science (MS)

Department

Chemistry

Number of Pages

57

Abstract

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-l,4-benzoquinone (DDQ) and 7,7,8,8-tetracyanoquinodimethane (TCNQ); and with the inorganic electron acceptor, ferric chloride (FeCl{dollar}\sb3{dollar}). Charge transfer was observed in P3OT solutions doped with FeCl{dollar}\sb3{dollar} and DDQ. TCNQ-doped solutions showed no optical evidence of charge transfer. Thin films of the doped P3OT were examined at various doping levels. Spectroscopic and electrical conductivity measurements of P3OT films, doped with DDQ, TCNQ, and FeCl{dollar}\sb3{dollar}, at different doping levels, are presented. Optical absorption measurements provided information on the degree of charge transfer occurring for the various dopants. Electrical conductivity measurements showed that the conductivity of P3OT increased with the various dopants in the order of TCNQ {dollar}<{dollar} DDQ {dollar}<{dollar} FeCl{dollar}\sb3{dollar}, for the same dopant concentration level. Results are discussed in relation to the electrochemical properties of the prepared films and the structural properties of P3OT.

Keywords

Absorption; Acceptor; Conductivity; Doped; Electrical; Electron; Films; Octylthiophene; Optical; Poly

Controlled Subject

Polymers; Polymerization; Chemistry; Materials science; Condensed matter; Physics

File Format

pdf

File Size

2160.64 KB

Degree Grantor

University of Nevada, Las Vegas

Language

English

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