Abstract
AbstractWe report the preparation of organometallic side‐wall complexes of single‐walled carbon nanotubes (SWNTs) under conditions, which allow the study of both mono‐ and bis‐hexahapto SWNT coordination compounds [(η6‐SWNT)Cr(CO)3, (η6‐SWNT)Cr(η6‐C6H6), (η6‐SWNT)2Cr]. The results are interpreted in terms of exohedral and endohedral binding of chromium to the SWNT sidewalls and ligand competition reactions suggest that endohedral binding provides a very stable and kinetically inert mode of organometallic bonding. We demonstrate that the electrical conductivity of SWNT thin films are significantly enhanced by side‐wall bonding to Group 6 transition metals (M = Cr, Mo, and W), which serve to reduce the inter‐carbon nanotube junction electrical resistance by the formation of SWNT interconnects [(η6‐SWNT)2M].
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