SFM Tip-Assisted Hydrolysis of a Dithiobis(succinimido undecanoate) Monolayer Chemisorbed on a Au(111) Surface

Autor:	John-Bruce D. Green, Vivian W. Jones, Jianhong Wang, Jeremy R. Kenseth, Mark T. McDermott, Marc D. Porter
Rok vydání:	1997
Předmět:	Steric effects Chemistry Stereochemistry General Chemistry Photochemistry Biochemistry Catalysis Scanning Force Microscope Ion Hydrolysis chemistry.chemical_compound Colloid and Surface Chemistry Monolayer Hydroxide
Zdroj:	Journal of the American Chemical Society. 119:12796-12799
ISSN:	1520-5126 0002-7863
Popis:	This paper reports on the use of a scanning force microscope (SFM) for the tip-assisted base hydrolysis of an ester-terminated alkanethiolate monolayer on Au(111). We have found that contact imaging accelerates the base hydrolysis of a dithiobis(succinimido undecanoate) monolayer relative to the surrounding unimaged area. It is proposed that (1) the mechanical disruption by the SFM probe tip of the steric barrier imposed by the neighboring adsorbates facilitates access of hydroxide ions to the buried acyl carbons in the adlayer, and (2) the surface area hydrolytically transformed by this disruption can be controlled by the SFM imaging conditions. Findings in support of our conclusions are presented, and potential implications to nanotechnology are briefly discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f62c30c7ce334dbc061a42c395e6bccd https://doi.org/10.1021/ja9715051 Zobrazit plný text záznamu