Remarkably enhanced adhesion of coherently aligned catechol-terminated molecules on ultraclean ultraflat gold nanoplates
| Autor: | Miyeon Lee, Hyoban Lee, Insik In, Changjun Park, Hongki Kim, Sang Youl Kim, Bongsoo Kim |
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| Rok vydání: | 2016 |
| Předmět: |
Catechol
Materials science Atomic force microscopy Mechanical Engineering Bioengineering Nanotechnology 02 engineering and technology General Chemistry Adhesion 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Characterization (materials science) chemistry.chemical_compound chemistry Mechanics of Materials Molecule General Materials Science Gold surface Electrical and Electronic Engineering 0210 nano-technology |
| Zdroj: | Nanotechnology. 27(47) |
| ISSN: | 1361-6528 |
| Popis: | We report the characterization and formation of catechol-terminated molecules immobilized on gold nanoplates (Au NPLs) using N-(3,4-dihydroxyphenethyl)-2-mercaptoacetamide (Cat-EAA-SH). Single-crystalline Au NPLs, synthesized using a one-step chemical vapor transport method, have ultraclean and ultraflat surfaces that make Cat-EAA-SH molecules aligned into a well-ordered network of a large-scale. Topographic study of the catechol-terminated molecules on Au NPLs using atomic force microscopy showed more orderly orientation and higher density, leading to significantly higher adhesion as observed from local force–distance curves than those on other Au surfaces. These coherently aligned catechol-terminated molecules on the atomically smooth gold surface led to significanty more reproducible and thus more physico-chemically meaningful measurements than was possible before by employing rough gold surfaces. |
| Databáze: | OpenAIRE |
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