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Electrolyte-driven electrochemical amplification by poly(thienylacetylene) encapsulated within Zeolite Y
Electrochemical oxidation and reduction of poly(thienylacetylene) encapsulated inside zeolite Y (PTA@Y) exhibit with large anodic and cathodic doping currents with a significant reversibility. Thienyl groups lower the redox potential of polyacetylene chain whereas encapsulation stabilizes the resulting charged radical species blocking undesired post electron-transfer cross-link reactions. Size-exclusion effects associated produces an electrolyte-dependent amplification of currents recorded at PTA@Y-modified electrodes for electrochemical processes involving selected substrates in solution, namely, dinitrobiphenyl and benzidine. Keywords: Poly(thienylacetylene), Zeolite Y, Electrochemistry, …
Preparation and conductivity of PEDOT encapsulated inside faujasites
Poly[3,4-(ethylenedioxy)thiophene] (PEDOT) encapsulated inside the faujasite micropores has been prepared by polymerization of the monomer in partially Fe-exchanged faujasites. Faujasites containing PEDOT within the interior exhibit notable electrical conductivity compared to plain faujasite. This conductivity is attributed to the presence of polarons that have been detected by EPR spectroscopy.