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Growth kinetics of racemic heptahelicene-2-carboxylic acid nanowires on calcite (104)
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SYSNO ASEP 0466977 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Growth kinetics of racemic heptahelicene-2-carboxylic acid nanowires on calcite (104) Author(s) Einax, M. (IL)
Richter, T. (DE)
Nimmrich, M. (DE)
Rahe, P. (DE)
Stará, Irena G. (UOCHB-X) RID, ORCID
Starý, Ivo (UOCHB-X) RID, ORCID
Kühnle, A. (DE)
Maass, P. (DE)Article number 134702 Source Title Journal of Chemical Physics. - : AIP Publishing - ISSN 0021-9606
Roč. 145, č. 13 (2016)Number of pages 7 s. Language eng - English Country US - United States Keywords heptahelicene-2-carboxylic acid nanowires ; nc-AFM ; calcite ; growth kinetics Subject RIV CC - Organic Chemistry Institutional support UOCHB-X - RVO:61388963 UT WOS 000386156200033 EID SCOPUS 84989874932 DOI https://doi.org/10.1063/1.4963724 Annotation Molecular self-assembly of racemic heptahelicene-2-carboxylic acid on a dielectric substrate at room temperature can be used to generate wire-like organic nanostructures consisting of single and double molecular rows. By means of non-contact atomic force microscopy, we investigate the growth of the wire-like pattern after deposition by experimental and theoretical means. From analyzing the time dependence of the mean row length, two distinct regimes were found. At the early post-deposition stage, the mean length grows in time. Subsequently, a crossover to a second regime is observed, where the mean row length remains nearly constant. We explain these findings by a mean-field rate equation approach providing a comprehensive picture of the growth kinetics. As a result, we demonstrate that the crossover between the two distinct regimes is accomplished by vanishing of the homochiral single rows. At later stages only heterochiral double row structures remain. Workplace Institute of Organic Chemistry and Biochemistry Contact asep@uochb.cas.cz ; Kateřina Šperková, Tel.: 232 002 584 ; Jana Procházková, Tel.: 220 183 418 Year of Publishing 2017
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