Toshinari Ichihashi

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A facile approach for the covalent functionalization of carbon nanohorns (CNHs) based on the benzyne cycloaddition reaction is presented. The benzynes were in situ generated from either anthranilic acid by decomposition of the internal benzenediazonium-2-carboxylate or from 2-(trimethylsilyl)-phenyl triflate by fluoride ion attack at the silicon atom(More)
The microwave-assisted functionalization of carbon nanohorns (CNHs) via [2+1] nitrenes cycloaddition, providing well dispersible hybrid materials possessing aziridino-rings covalently grafted onto the graphitic network of CNHs, was accomplished, while condensation of hydroxy-functionalized CNHs with thioctic acid, furnishing an endocyclic disulfide bond(More)
Globular aggregates of carbon nanohorns (CNHs) often contain graphite-like thin sheets (GLSs), and providing different functions to CNHs and GLSs would expand the possible applications of the CNH-GLS aggregates. We show that the GLS edges can be carboxylated selectively by immersing the aggregates in an aqueous solution of H2O2 at room temperature for 1(More)
Nanocarbons have many potential medical applications. Drug delivery, diagnostic imaging, and photohyperthermia therapy, especially in the treatment of tumors, have attracted interest. For the further advancement of these application studies, the microscopic localization of nanocarbons in tumor tissues and cells is a prerequisite. In this study, carbon(More)
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