The nature and dynamics of nonlinear excitations in conducting polymers. Polyaniline |
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Authors: | V I Krinichnyi |
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Institution: | (1) Institute of Problems of Chemical Physics, Russian Academy of Sciences, 142432 Chernogolovka, Moscow Region, Russian Federation |
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Abstract: | The advantages of using the multifrequency (3-cm, 8-mm, and 2-mm) EPR method in combination with the modified method of spin
label and spin probes and the methods of steady-state microwave saturation and microwave saturation transfer of spin packets
in studies of the spin and electrodynamic properties of polyaniline are outlined. The methods of determining the composition
of localized and delocalized paramagnetic centers and calculating their main parameters from total ESR spectra are described.
Original results of investigations of polyaniline modified with sulfuric, hydrochloric, camphorsulfonic, and 2-acrylamido-2-methyl-l-propanesulfonic
acids are reported. The dependences of the nature, electronic relaxation, dynamics of paramagnetic centers, and the charge-transfer
mechanism on the method of synthesis, the structure of the acid molecule, and the polyaniline oxidation level are shown.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 2, pp. 205–230, February, 2000. |
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Keywords: | polyaniline conducting polymers EPR spin conducting mechanism polaron |
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