NDLI: Face-selective nucleation of calcite on self-assembled monolayers of alkanethiols: effect of the parity of the alkyl chain.

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Face-selective nucleation of calcite on self-assembled monolayers of alkanethiols: effect of the parity of the alkyl chain.

Content Provider	Semantic Scholar
Author	Han, Yong-Jin Aizenberg, Joanna
Copyright Year	2003
Abstract	The use of self-assembled monolayers (SAMs) has provided an ideal platform to study the function of highly ordered organic surfaces for various applications, including nucleation of crystals. In particular, SAMs of alkanethiols with a range of functionalities supported on gold and silver have been demonstrated to effectively nucleate calcium carbonate crystals, with a high degree of orientational specificity for each surface. It has been shown that the face-selective nucleation of calcite cannot be explained in terms of the lattice match between the SAM and the crystal face it nucleates. It has been suggested that a match may exist between the direction of the SAM terminal groups and that of anions in the nucleated crystal. This situation would imply that the mechanism of the face-selective nucleation involves the translation of the orientation of the terminal groups on the SAM into the nucleating crystals. The validity of this hypothesis could not be explicitly tested in the previously reported systems, since the SAMs used differed in multiple parameters (for example, functional groups, metal support, chain length). Herein we verify the proposed mechanism by investigating the oriented growth of calcite on SAMs in which only one parameter—the orientation of the functional group—is varied. For this purpose, we utilized the so-called “odd-even effect” in the monolayers. Detailed structural studies of SAMs have shown that the orientation of long-chain alkanethiols (HS(CH2)nCH3) adsorbed from solution onto metal surfaces is determined by the cant (a, Figure 1a) and
File Format	PDF HTM / HTML
DOI	10.1002/anie.200351655
PubMed reference number	12916043
Journal	Medline
Volume Number	42
Issue Number	31
Alternate Webpage(s)	http://aizenberglab.seas.harvard.edu/papers/2003_AngewChem.pdf
Alternate Webpage(s)	https://doi.org/10.1002/anie.200351655
Journal	Angewandte Chemie
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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