Please use this identifier to cite or link to this item: doi:10.22028/D291-29275
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Title: Interactions between shape-persistent macromolecules as probed by AFM
Author(s): Blass, Johanna
Brunke, Jessica
Emmerich, Franziska
Przybylski, Cédric
Garamus, Vasil M.
Feoktystov, Artem
Bennewitz, Roland
Wenz, Gerhard
Albrecht, Marcel
Language: English
Title: Beilstein Journal of Organic Chemistry
Volume: 13
Startpage: 938
Endpage: 951
Publisher/Platform: Beilstein-Institut
Year of Publication: 2017
Publikation type: Journal Article
Abstract: Water-soluble shape-persistent cyclodextrin (CD) polymers with amino-functionalized end groups were prepared starting from diacetylene-modified cyclodextrin monomers by a combined Glaser coupling/click chemistry approach. Structural perfection of the neutral CD polymers and inclusion complex formation with ditopic and monotopic guest molecules were proven by MALDI-TOF and UV-vis measurements. Small-angle neutron and X-ray (SANS/SAXS) scattering experiments confirm the stiffness of the polymer chains with an apparent contour length of about 130 Å. Surface modification of planar silicon wafers as well as AFM tips was realized by covalent bound formation between the terminal amino groups of the CD polymer and a reactive isothiocyanate-silane monolayer. Atomic force measurements of CD polymer decorated surfaces show enhanced supramolecular interaction energies which can be attributed to multiple inclusion complexes based on the rigidity of the polymer backbone and the regular configuration of the CD moieties. Depending on the geometrical configuration of attachment anisotropic adhesion characteristics of the polymer system can be distinguished between a peeling and a shearing mechanism.
DOI of the first publication: 10.3762/bjoc.13.95
Link to this record: hdl:20.500.11880/28132
ISSN: 1860-5397
Date of registration: 17-Oct-2019
Faculty: NT - Naturwissenschaftlich- Technische Fakultät
Department: NT - Physik
Professorship: NT - Keiner Professur zugeordnet
Collections:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

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