Covalent functionalization of carbon nanotube forests grown in situ on a metal-silicon chip

Johan Johansson; Niklas Bosaeus; Nina Kann; Björn Åkerman; Bengt Nordén; Waqas Khalid

doi:10.1117/12.915397

Covalent functionalization of carbon nanotube forests grown in situ on a metal-silicon chip
Paper in proceeding, 2012

We report on the successful covalent functionalization of carbon nanotube (CNT) forests, in situ grown on a silicon chip with thin metal contact film as the buffer layer between the CNT forests and the substrate. The CNT forests were successfully functionalized with active amine and azide groups, which can be used for further chemical reactions. The morphology of the CNT forests was maintained after the functionalization. We thus provide a promising foundation for a miniaturized biosensor arrays system that can be easily integrated with Complementary Metal-Oxide Semiconductor (CMOS) technology.

SEM

3-cycloaddition

EDS

Functionalized CNTs on a chip

CuAAC

Covalent functionalization

Carbon nanotubes

Amide coupling