TY  - JOUR
A1  - Schué, Emmanuelle
A1  - Kopyshev, Alexey
A1  - Lutz, Jean-François
A1  - Börner, Hans G.
T1  - Molecular bottle brushes with positioned selenols
T2  - Journal of Polymer Science
N2  - A synthesis route to controlled and dynamic single polymer chain folding is reported. Sequence-controlled macromolecules containing precisely located selenol moieties within a polymer chain are synthesized. Oxidation of selenol functionalities lead to diselenide bridges and induces controlled intramolecular crosslinking to generate single chain collapse. The cyclization process is successfully characterized by SEC as well as by H-1 NMR and 2D HSQC NMR spectroscopies. In order to gain insight on the molecular level to reveal the degree of structural control, the folded polymers are transformed into folded molecular brushes that are known to be visualizable as single molecule structures by AFM. The "grafting onto" approach is performed by using triazolinedione-diene reaction to graft the side chain polymers. A series of folded molecular brushes as well as the corresponding linear controls are synthesized. AFM visualization is proving the cyclization of the folded backbone by showing globular objects, where non-folded brushes show typical worm-like structures. (C) 2019 The Authors. Journal of Polymer Science published by Wiley Periodicals, Inc.
KW  - atomic force microscopy (AFM)
KW  - diselenide
KW  - grafted polymers
KW  - molecular bottle brushes
KW  - sequence-controlled polymers
KW  - single chain folding
Y1  - 2020
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/61050
SN  - 2642-4169
VL  - 58
IS  - 1
SP  - 154
EP  - 162
PB  - Wiley
CY  - Hoboken
ER  -