Electronic Resource
College Park, Md.
:
American Institute of Physics (AIP)
The Journal of Chemical Physics
90 (1989), S. 2042-2044
ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
The magnetic and optical properties of a nonconjugated conducting polymer (1,4 cis-polyisoprene) at different doping levels of iodine are discussed in this report. The EPR and static magnetic susceptibility measurements show that cation radical (spin 1/2) species are generated as a consequence of doping. The concentration of the cation radicals increases approximately linearly with the dopant concentration until saturation. The magnetic susceptibility has a Curie-like temperature dependence as anticipated. The optical measurement of doped samples show two absorption peaks—one at ∼4.27 eV and the other at ∼3.3 eV. The first peak is attributed to the excitation of the cation radicals (comparable to ethylene ions) and the second one is interpreted as due to charge transfer between localized states. These results are fully consistent with the electrical properties and the structure of the system.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.456047
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