Dear all,
Thiolated chemicals can bind to nanoparticle covalently (e.g. gold, silver, quantum dot...) and that is well known.
But I have question.
What is principle or drive force of thiol-nanoparticle interaction ?
Thank you.
Dear Yong Hyun Choi :
This heterogeneous reaction. The driving force is decrease of Gibbs energy of system Au +thiol. Features refer to the article.
V. G. Yarzhemsky, Yu. V. Norov, S. V. Murashov, C. Battocchio,
I. Fratoddi, I. Venditti, and G. Polzonetti Quantum-Chemical Modeling of Interaction between Gold Nanoclusters and Thiols. Neorg. Mater. 2010. V.46. N9.P.924
Ab initio calculations are used to model small Aun nanoclusters and AumSH clusters. The results for the Au6, Au8, and Au20 clusters demonstrate that the substitution of a SH group for a Au atom gives a stable cluster of the same geometry if the Au atom has an acute bond angle and a negative effective charge. The example of the Au10 cluster suggests that SH substitution for Au has a stabilizing effect. The modeling results are discussed with application to self-organizing thiol monolayers on gold clusters.
DOI: 10.1134/S002016851009002
Best regards.
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