Conformation and electrical conductivity of poly(γ-methyl-L(LD)-glutamates) reticulate-doped with 1,3-dimethylimidazolium-7,7,8,8-tetracyano-p-quinodimethane complex salt |
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Authors: | Miloslav orm Petr Ddek Stanislav Neprek Rudolf Kotva Hana Pivcov |
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Affiliation: | Miloslav Šorm,Petr Dědek,Stanislav Nešpůrek,Rudolf Kotva,Hana Pivcová |
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Abstract: | Polymeric composites were prepared by reticulate doping of poly(γ-methyl-L-glutamate) (PMLGA) and poly(γ-methyl-LD-glutamate) (PMLDGA, 1 : 1) having different conformation forms with 1,3-dimethylimidazolium-TCNQ complex salt. The heat induced α-helix to coil transition in PMLGA and α-helix to β-form and coil transition in PMLDGA were carried out in chlorobenzene and o-dichlorobenzene at temperatures between 70 and 150°C. The conductivity of polyglutamate composites thermally treated and prepared at 70°C is higher by approximately two orders of magnitude than that of thermally not treated films cast at ambient temperature. The conductivity of the most conductive reticulate-doped PMLGA film is higher by more than four orders of magnitude than that of the 1,3-dimethylimidazolium-TCNQ complex salt in pressed pellets. |
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