@misc{LangeMirsky, author = {Lange, Ulrich and Mirsky, Vladimir M.}, title = {Separated analysis of bulk and contact resistance of conducting polymers: comparison of simultaneous 2- and 4-point measurements with impedance measurements}, series = {Journal of Electroanalytical Chemistry}, volume = {622}, journal = {Journal of Electroanalytical Chemistry}, number = {2}, issn = {1572-6657}, doi = {10.1016/j.jelechem.2008.06.013}, pages = {246 -- 251}, abstract = {Simultaneous measurements of conductive polymer by two-and four-point techniques were used for evaluation of the contact resistance for the polymer/metal interface. An experimental validation of this approach was performed for polypyrrole electrochemically deposited on gold electrodes. The dependence of contact resistance on the electrode potential versus reference electrode was measured. The results were compared with the corresponding dependence obtained from impedance spectroscopy. Both techniques provide almost identical data while the new approach is easier, faster and independent on selection of equivalent circuits.}, language = {en} } @misc{LangeRoznyatovskayaMirsky, author = {Lange, Ulrich and Roznyatovskaya, Nataliya V. and Mirsky, Vladimir M.}, title = {Conducting polymers in chemical sensors and arrays (invited review)}, series = {Analytica Chimica Acta}, volume = {614}, journal = {Analytica Chimica Acta}, number = {1}, issn = {0003-2670}, doi = {10.1016/j.aca.2008.02.068}, pages = {1 -- 26}, abstract = {The review covers main applications of conducting polymers in chemical sensors and biosensors. The first part is focused on intrinsic and induced receptor properties of conducting polymers, such as pH sensitivity, sensitivity to inorganic ions and organic molecules as well as sensitivity to gases. Induced receptor properties can be also formed by molecularly imprinted polymerization or by immobilization of biological receptors. Immobilization strategies are reviewed in the second part. The third part is focused on applications of conducting polymers as transducers and includes usual optical (fluorescence, SPR, etc.) and electrical (conductometric, amperometric, potentiometric, etc.) transducing techniques as well as organic chemosensitive semiconductor devices. An assembly of stable sensing structures requires strong binding of conducting polymers to solid supports. These aspects are discussed in the next part. Finally, an application of combinatorial synthesis and high-throughput analysis to the development and optimization of sensing materials is described.}, language = {en} }