Supramolecular control of two-dimensional phase behavior
| Autor: | Andre J. Gesquiere, Frans C. De Schryver, G. Zoriniants, Mattias Larsson, Jan H. van Esch, Mohamed M. S. Abdel-Mottaleb, Ben L. Feringa, Steven De Feyter, Bas J. V. Verkuijl, Norbert Schuurmans, Jan van Stam |
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| Přispěvatelé: | Stratingh Institute of Chemistry, Synthetic Organic Chemistry |
| Jazyk: | angličtina |
| Rok vydání: | 2003 |
| Předmět: |
ORGANIC MONOLAYERS
PHYSISORBED MONOLAYERS Analytical chemistry Supramolecular chemistry scanning probe microscopy Alkylation Catalysis SELF-ASSEMBLED MONOLAYERS SOLID-LIQUID INTERFACE physisorption Phase (matter) GRAPHITE INTERFACE Monolayer Molecule Alkyl chemistry.chemical_classification Chemistry Organic Chemistry SCANNING-TUNNELING-MICROSCOPY Self-assembled monolayer General Chemistry self-assembly PROBE LITHOGRAPHY Crystallography monolayers ATOMIC-FORCE MICROSCOPE METAL PHTHALOCYANINES MOLECULAR-DYNAMICS Self-assembly |
| Zdroj: | Chemistry : a European Journal, 9(5), 1198-1206. Wiley-VCH Verlag GmbH & Co. KGaA |
| ISSN: | 0947-6539 |
| DOI: | 10.1002/chem.200390137 |
| Popis: | We have used directed two- component self-assembly to ™pattern∫ organic monolayers on the nanometer scale at the liquid/solid interface. The ability of the scanning tunneling micro- scope to investigate structural details in these adlayers was used to gain insight into the two-component two-dimension- al phase behavior. The components are symmetrically alkylated bisurea deriva- tives (R1-urea-spacer-urea-R2; R1, R2 alkyl, spacer alkyl or bisthio- phene). The bisthiophene unit acts as a marker and its bisurea derivative (T2 )i s a component in all the mixtures inves- tigated. By varying the position of the hydrogen-bond forming urea groups along the molecule and the length of the alkyl chains of the other compo- nents, the effect of 1) hydrogen bonding, 2) molecule length, 3) odd ± even effects, and 4) shape complementarity on the two-dimensional phase behavior was investigated. Insight into the effect of these parameters leads to the control of the two-dimensional patterning: from randomly intermixed systems to phase separation. |
| Databáze: | OpenAIRE |
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