TY - GEN A1 - Broncová, Gabriela A1 - Anikin, Sergey A1 - Lange, Ulrich A1 - Matějka, Pavel A1 - Krondak, Martin A1 - Král, Vladimír A1 - Mirsky, Vladimir M. T1 - Electrochemical and spectroscopic properties of poly-4,4′-dialkoxy-2,2′-bipyrroles T2 - Journal of Solid State Electrochemistry N2 - The structure and the electrochemical and spectral properties of two conductive electrochemically polymerized substituted bipyrroles 4,4′-methoxy-2,2′-bipyrrole and 4,4′-buthoxy-2,2′-bipyrrole were studied and compared. The polymers were characterized by cyclic voltammetry, FT-Raman spectroscopy, scanning electron microscopy, and in situ conductivity measurements at different pH and redox state. KW - Conducting polymer KW - Polydialkoxybipyrroles KW - Raman spectroscopy KW - Cyclic voltammetry KW - Conductivity Y1 - 2010 U6 - https://doi.org/10.1007/s10008-009-0911-5 SN - 1432-8488 SN - 1433-0768 VL - 14 IS - 6 SP - 1035 EP - 1044 ER - TY - GEN A1 - Krondak, Martin A1 - Broncová, Gabriela A1 - Anikin, Sergey A1 - Merz, Andreas A1 - Mirsky, Vladimir M. T1 - Chemosensitive properties of poly-4,4'-dialkoxy2,2’-bipyrroles T2 - Journal of Solid State Electrochemistry N2 - Chemosensitive properties of 4,4′-dimethoxy-2,2′-bipyrrole and 4,4′-dibuthoxy-2,2′-bipyrrole were investigated. These new conductive polymers were polymerized by cyclic voltammetry on the platinum and gold interdigitated electrodes designed for 2- and 4-point measurement of lateral conductivity. Thus, obtained polymers demonstrated high sensitivity to HCl in the parts per million concentration range. Kinetics of the gaseous HCl influence on the ratios of conductivities measured by 2- and 4-point techniques was analyzed. Some response of the polymers conductance towards NH3, NO and oxygen was also observed, but with much lower sensitivity than towards HCl. In aqueous solutions, the polymer conductivity was pH dependent; in comparison with 4,4′-dibuthoxy-2,2′-bipyrrole, the conductivity range of the methoxy derivative was shifted to acidic range for about two pH units. A possibility to use the pH dependence for the development of enzymatic biosensors with pH transducing was demonstrated. KW - Conductive polymer KW - Sensor KW - Conductivity KW - HCI KW - Alkoxybipyrroles Y1 - 2006 U6 - https://doi.org/10.1007/s10008-005-0069-8 SN - 1432-8488 SN - 1433-0768 VL - 10 IS - 3 SP - 185 EP - 191 ER -