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EnglishThe electrochemical growth of polyalkylterthiophenes has been monitored in situ with the Electrochemical Quartz Crystal Microbalance (EQCM). Potential controlled synthesis of poly-3′4′-didodecyilterthiophene (3′4′-DDTT) and poly-33″-DDTT revealed an unexpected cathodic precipitation following the anodic deposition. From the analysis of the experimental data we obtained an excellent fit of the cathodic precipitation curves with a first-order nucleation law. A correlation between substitution pattern of the starting monomers and the deposition kinetic of the resulting polymers was found. Factors controlling the cathodic deposition of the Poly-DDTTs didn't depend on the presence of a parent phase on the electrode. Finally, long time-scale experiments (500s) with EQCM during potentiostatic synthesis of Poly-DDTTs revealed an evolution of the deposited mass with peculiar features of a process under diffusion control.
| Titolo: | EQCM Characterization of some substituted polyterthiophenes | |
| Autore/i: | Dini D.; Decker F.; Zotti G.; Schiavon G.; Zecchin S.; Andreani F.; Salatelli E.; Lanzi M. | |
| Autore/i Unibo: | ||
| Anno: | 1999 | |
| Rivista: | ||
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/S0013-4686(98)00300-4 | |
| Abstract: | The electrochemical growth of polyalkylterthiophenes has been monitored in situ with the Electrochemical Quartz Crystal Microbalance (EQCM). Potential controlled synthesis of poly-3′4′-didodecyilterthiophene (3′4′-DDTT) and poly-33″-DDTT revealed an unexpected cathodic precipitation following the anodic deposition. From the analysis of the experimental data we obtained an excellent fit of the cathodic precipitation curves with a first-order nucleation law. A correlation between substitution pattern of the starting monomers and the deposition kinetic of the resulting polymers was found. Factors controlling the cathodic deposition of the Poly-DDTTs didn't depend on the presence of a parent phase on the electrode. Finally, long time-scale experiments (500s) with EQCM during potentiostatic synthesis of Poly-DDTTs revealed an evolution of the deposited mass with peculiar features of a process under diffusion control. | |
| Data stato definitivo: | 2022-03-23T16:18:36Z | |
| Appare nelle tipologie: | 1.01 Articolo in rivista |
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