Covalent Si-C grafting of a silatrane cage to a carbon-based interface provides a truly conjugated benzyl-type system in which the 3 c-4 e orbital of the silatrane interacts with the macroscopic π-type substituent (graphite Csp2 network) through hyperconjugation. This process, studied by voltammetry, EIS, FTIR, SEM and DFT modeling, allows one to build carbon-based conducting interfaces with electronically conjugated molecular extensions. Non-conjugated covalent grafting of an alkyl silatrane moiety provides chemically stable functional interfaces that have good promise for electrochemically-driven applications, for example, electrochemical spin-writing.
Successful grafting requires good vascular joining between the scion and the rootstock. In their Full Paper on , C. Peureux and V. Jouikov parallel this principle to an efficient orbital overlap providing a true electronic conjugation of a 3 c–4 e orbital system of silatranes with macroscopic π‐type substituents (Csp2 network of graphite) through benzyl‐like structures formed upon covalent grafting of silatranyl moieties to carbon‐based conducting interfaces. Such systems can be seen as “organosilicon electrodes”.
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