Search

Your search keyword '"Stangenberg, René"' showing total 16 results
Start Over Author "Stangenberg, René" Publication Year Range Last 50 years
16 results on '"Stangenberg, René"'

8. A Polyphenylene Dendrimer Drug Transporter with Precisely Positioned Amphiphilic Surface Patches

Author

Stangenberg, René, primary, Wu, Yuzhou, additional, Hedrich, Jana, additional, Kurzbach, Dennis, additional, Wehner, Daniel, additional, Weidinger, Gilbert, additional, Kuan, Seah Ling, additional, Jansen, Malin Insa, additional, Jelezko, Fedor, additional, Luhmann, Heiko J., additional, Hinderberger, Dariush, additional, Weil, Tanja, additional, and Müllen, Klaus, additional

Published
2014
Full Text
View/download PDF

9. Macromol. Rapid Commun. 2/2014

Author

Stangenberg, René, primary, Saeed, Irfan, additional, Kuan, Seah Ling, additional, Baumgarten, Martin, additional, Weil, Tanja, additional, Klapper, Markus, additional, and Müllen, Klaus, additional

Published
2014
Full Text
View/download PDF

10. Supramolecular Linear-g-Hyperbranched Graft Polymers: Topology and Binding Strength of Hyperbranched Side Chains

Author

Moers, Christian, primary, Nuhn, Lutz, additional, Wissel, Marcel, additional, Stangenberg, René, additional, Mondeshki, Mihail, additional, Berger-Nicoletti, Elena, additional, Thomas, Anja, additional, Schaeffel, David, additional, Koynov, Kaloian, additional, Klapper, Markus, additional, Zentel, Rudolf, additional, and Frey, Holger, additional

Published
2013
Full Text
View/download PDF

14. Tuning Polarity of Polyphenylene Dendrimers by Patched Surface Amphiphilicity-Precise Control over Size, Shape, and Polarity.

Author

Stangenberg, René, Saeed, Irfan, Kuan, Seah Ling, Baumgarten, Martin, Weil, Tanja, Klapper, Markus, and Müllen, Klaus

Subjects
*POLARITY (Chemistry), *DENDRIMERS, *AMPHIPHILES, *CHEMICAL synthesis, *SURFACE texture, *PROTEIN structure
Abstract

In the ideal case, a precise synthesis yields molecules with a constitutional as well as a conformational perfectness. Such a case of precision is demonstrated by the synthesis of semi-rigid amphiphilic polyphenylene dendrimers (PPDs). Polar sulfonate groups are precisely placed on their periphery in such a manner that patches of polar and non-polar regions are created. Key structural features are the semi-rigid framework and shape-persistent nature of PPDs since the limited flexibility introduces a nano-phase-separated amphiphilic rim of the dendrimer. This results in both attractive and repulsive interactions with a given solvent. Frustrated solvent structures then lead to a remarkable solubility in solvents of different polarity such as toluene, methanol, and water or their mixtures. Water solubility combined with defined surface structuring and variable hydrophobicity of PPDs that resemble the delicate surface textures of proteins are important prerequisites for their biological and medical applications based upon cellular internalization. [ABSTRACT FROM AUTHOR]

Published
2014
Full Text
View/download PDF

16. The Generation Effect: Cavity Accessibility in Dense-Shell Polyphenylene Dendrimers.

Author

Brutschy, Malte, Stangenberg, René, Beer, Cornelia, Lubczyk, Daniel, Baumgarten, Martin, Müllen, Klaus, and Waldvogel, Siegfried R.

Subjects
*DENDRIMERS, *QUARTZ crystal microbalances, *QUARTZ crystals, *STERIC factor (Chemistry), *CHEMICAL synthesis
Abstract

Size exclusion is a widespread phenomenon in supra- and macromolecular chemistry. Herein, the size exclusion properties of polyphenylene dendrimers on the surface of high fundamental frequency quartz crystal microbalances are reported. For this purpose, a new dense fifth-generation polyphenylene dendrimer, which was previously not possible owing to the high steric demand of the dendron arms, was synthesized. By increasing the volume and size of subjected analytes an affinity shift from smaller to larger dendrimers can be obtained. [ABSTRACT FROM AUTHOR]

Published
2015
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results