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2. Molecule-molecule versus molecule-substrate interactions in the assembly of oligothiophenes at surfaces

Author

Surin, Mathieu, Leclere, Philippe, Feyter, Steven De, Lazzaroni, Roberto, Abdel-Mottaleb, Mohamed M. S., Feast, James W., De Schryver, Frans C., and Henze, Oliver

Subjects
Thiophene -- Chemical properties, Surface chemistry -- Research, Nanotechnology -- Research, Chemicals, plastics and rubber industries
Abstract

A joint experimental and theoretical approach for the study of the assembly of end-substituted oligothiophenes at surfaces with different polarities is presented. The studies of the self-assembly at surfaces of oligothiophenes end-capped with oligo(ethylene oxide) or hexyl groups show that the molecule-molecule interactions and the molecule-substrate interactions are both at work and lead to well-defined nanostructures, from two dimensional ultrathin regular layers to one dimensional fibrillar objects.

Published
2006

3. Self-assembly at the liquid/solid interface: STM reveals

Author

Feyter, Steven De and Schryver, Francs C. De

Subjects
Chemistry, Physical and theoretical -- Research, Scanning tunneling microscopy -- Research, Monomolecular films -- Research, Chemicals, plastics and rubber industries
Abstract

Monolayer formation and their properties at the organic liquid/solid interface with a focus on structure and control of monolayer formation, reactivity, and spectroscopy are studied. The liquid/solid interface provides an ideal environment to investigate self-assembly phenomena, and scanning tunneling microscopy (STM).

Published
2005

4. Synthesis and optical properties of polyphenylene dendrimers based on perylenes

Author

Qu, Jianqiang, Liu, Daojun, Feyter, Steven De, Jingying Zhang, Schryver, Frans C. De, and Mullen Klaus

Subjects
Polyphenylene oxide -- Chemical properties, Polyphenylene oxide -- Optical properties, Biological sciences, Chemistry
Abstract

A facile method to synthesize a series of polyphenylene dendrimers that have significant effects on the physical properties of the perylenes is described. The physical and mesoscopic properties of polyphenylene dendrimers, is presented.

Published
2003

5. 'Sergeants-and-Corporals' principle in chiral induction at an interface

Author

Destoop, Iris, Xu, Hong, Oliveras González, Cristina, Ghijsens, Elke, Amabilino, David B., Feyter, Steven de, Destoop, Iris, Xu, Hong, Oliveras González, Cristina, Ghijsens, Elke, Amabilino, David B., and Feyter, Steven de

Abstract

Self-assembly of an achiral porphyrin at the interface between a chiral solvent and an atomically flat substrate renders the monolayer chiral, and a non-racemic solvent can even overrule the intrinsic expression of chirality in the self-assembly of chiral molecules. © 2013 The Royal Society of Chemistry.

Published
2013

6. Singlet - Singlet Annihilation in Multichromophoric Peryleneimide Dendrimers, Determined by Fluorescence Upconversion

Author

Belder, Gino De, Schweitzer, Gerd, Jordens, Sven, Lor, Marc, Mitra, Sivaprasad, Hofkens, Johan, Feyter, Steven De, Auweraer, Mark Van der, Herrmann, Andreas, Weil, Tanja, Müllen, Klaus, Schryver, Frans C. De, Zernike Institute for Advanced Materials, Polymer Chemistry and Bioengineering, and Nanotechnology and Biophysics in Medicine (NANOBIOMED)

Subjects
kinetics, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, fluorescence spectroscopy, GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries), time-resolved spectroscopy, dendrimers
Published
2001

7. Supramolecular control of two-dimensional phase behavior

Author

Feyter, Steven De, Larsson, Mattias, Schuurmans, Norbert, Verkuijl, Bas, Zoriniants, George, Gesquière, André, Abdel-Mottaleb, Mohamed M., Esch, Jan van, Stam, Jan van, Schryver, Frans De, Feringa, Bernard, Feyter, Steven De, Larsson, Mattias, Schuurmans, Norbert, Verkuijl, Bas, Zoriniants, George, Gesquière, André, Abdel-Mottaleb, Mohamed M., Esch, Jan van, Stam, Jan van, Schryver, Frans De, and Feringa, Bernard

Abstract

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 microscope to investigate structural details in these adlayers was used to gain insight into the two-component two-dimensional phase behavior. The components are symmetrically alkylated bisurea derivatives (R1-urea-spacer-urea-R2; R1, R2=alkyl, spacer=alkyl or bisthiophene). The bisthiophene unit acts as a marker and its bisurea derivative (T2) is a component in all the mixtures investigated. By varying the position of the hydrogen-bond forming urea groups along the molecule and the length of the alkyl chains of the other components, 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.

Published
2003

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