11 November 2013 2 10K Report

I have seen in several papers people claim to get self-assembled AuNp monolayers on MPTMS (http://www.sigmaaldrich.com/catalog/product/fluka/63800?lang=en®ion=US), but the SH group is neutral at ph7. Why would gold nanoparticles react with a neutral SH group? I understand that gold-thiol bond is extremely strong, but wouldn't the reaction have to occur at a special pH to free the S group from the SH?

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