Grafting of organic layers via bipolar electrochemistry

摘要: In this thesis, the concept of bipolar electrochemistry, which allows carrying out electrochemical reactions on a free-standing conductive object in an electric field, was employed to generate Janus-type objects with hybrid organic-inorganic composition. As proof-of-concept micrometer-sized glassy carbon beads were modified asymmetrically via reduction aryl diazonium salts. The grafted organic layers can be probed either gold nanoparticles (AuNPs) or fluorescent molecules. results show that one-half sphere selectively and high precision. This then generalized vertically aligned nonotubes (VACNTs). They prepared chemical vapor deposition using porous anodic aluminum oxide (AAO) as template. electrografting layer onto inner surface VACNTs performed by tubes still embedded pores AAO membrane starting material. visualized coupling them AuNPs. After removal, reveal grafting only at one end along wall. For both cases, fine tuning time and/or field used for salts control geometric area grafting. technique opens up applications these fields controlled drug delivery storage.