Surface-dopylated carbon nanoparticles sense gas-induced ph changes

• Main Authors: Ibrahim, Norahim, Lawrence, Katherine, James, Tony D., Xia, Feng Jie, Mu, Pan, Shichun, Mu, Mitchels, John M., Frank, Marken
• Format: Article
• Published: Elsevier B. V 2012
• Subjects: QH Natural history
• Online Access: http://eprints.utm.my/id/eprint/47563/; http://dx.doi.org/10.1016/j.snb.2011.10.009
• Institution: Universiti Teknologi Malaysia

Carbon nanoparticles of ca. 9-18 nm diameter (Emperor 2000™) are surface-modified by covalently linking l-dopa-boc (boc-protected l-3,4-dihydroxyphenylalanine) with a surface coverage of approximately 100 per particle (or 3 × 10 13 cm -2). In solution environments these redox-active nanoparticles pr...