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Cyclic Polysiloxanes with Linked Cyclotetrasiloxane Subunits
Author(s) -
Yu Jianyi,
Liu Yuzhou
Publication year - 2017
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201703347
Subject(s) - polymer , macromolecule , chemistry , polymer chemistry , silane , combinatorial chemistry , materials science , organic chemistry , biochemistry
Cyclic polymers are an important class of macromolecules, but the structural diversity of the backbone is limited. Herein we report the use of the Piers–Rubinsztajn reaction for the one‐step synthesis of cyclic polysiloxanes with novel structural features. Specifically, the B(C 6 F 5 ) 3 ‐catalyzed coupling of various organic tris(dimethylsiloxy)silane and trialkoxysilane compounds generated a series of cyclic polysiloxanes with cyclotetrasiloxane subunits. The thiolated cyclic polymers were also shown to be effective in directing the circular assembly gold nanoparticles. The presence of constrained rings in the backbone is unprecedented and may offer opportunities for novel applications of these cyclic polymers.