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A Trefoil Knotted Polymer Produced through Ring Expansion
Author(s) -
Cao PengFei,
Mangadlao Joey,
Advincula Rigoberto
Publication year - 2015
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201411623
Subject(s) - trefoil , polymer , knot (papermaking) , hydrodynamic radius , atomic force microscopy , radius , ring (chemistry) , copper , materials science , chemistry , nanotechnology , chemical physics , polymer science , composite material , organic chemistry , biology , computer science , computer security , agronomy , copolymer
A synthetic strategy is reported for the production of a trefoil knotted polymer from a copper(I)‐templated helical knot precursor through ring expansion. The expected changes in the properties of the knotted polymer compared to a linear analogue, for example, reduced hydrodynamic radius and lower intrinsic viscosity, together with an atomic force microscopy (AFM) image of individual molecular knots, confirmed the formation of the resulting trefoil knotted polymer. The strategies employed here could be utilized to enrich the variety of available polymers with new architectures.