10.1021/acs.langmuir.5b01931.s001 Bogdan Parakhonskiy Bogdan Parakhonskiy Dmitry Shchukin Dmitry Shchukin Polypyrrole Microcontainers: Electrochemical Synthesis and Characterization American Chemical Society 2015 electrogenerated hydrogen gas bubbles characterization polypyrrole microcontainers CharacterizationWe 70 μ m hydrogen microbubble surface Dependent gain insight diameter polypyrrole shell Electrochemical Synthesis template synthesis electrochemically electrochemical biasing electropolymerization conditions Polypyrrole Microcontainers growth kinetics scanning electron microscopy wall thickness redox cycles electrochemical conditions scan rate globule 200 μ m Experimental results 2015-08-25 00:00:00 Journal contribution https://acs.figshare.com/articles/journal_contribution/Polypyrrole_Microcontainers_Electrochemical_Synthesis_and_Characterization/2137960 We present electrochemically controlled synthesis of polypyrrole microcontainers on electrogenerated hydrogen gas bubbles acting as a template. We performed structural characterization of the obtained microcontainers to gain insight into the growth kinetics of the polypyrrole shell. Experimental results showed that surfactant-mediated polymerization of pyrrole at the hydrogen microbubble surface under controlled electrochemical biasing led to the synthesis of various micro/nanostructures. Dependent upon the electrochemical conditions, such as the number of redox cycles and scan rate, the containers with spherical globules and bowl-like structures, which become lantern-like with increasing the number of cycles, are formed, as revealed by scanning electron microscopy. Their diameter can range between 40 and 200 μm, and wall thickness can be varied from 2 to 70 μm, depending upon the electropolymerization conditions.