Cyclic Polysiloxanes with Linked Cyclotetrasiloxane Subunits

Jianyi Yu; Yuzhou Liu

doi:10.1002/anie.201703347

Cyclic Polysiloxanes with Linked Cyclotetrasiloxane Subunits

Angew Chem Int Ed Engl. 2017 Jul 17;56(30):8706-8710. doi: 10.1002/anie.201703347. Epub 2017 Jun 19.

Authors

Jianyi Yu¹, Yuzhou Liu¹

Affiliation

¹ School of Chemistry, Beihang University, 37 Xueyuan Rd, Beijing, 100191, P.R. China.

PMID: 28513918
DOI: 10.1002/anie.201703347

Abstract

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(C₆ F₅ )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.

Keywords: cyclization; nanoparticles; polycycles; polymerization; siloxanes.

Publication types

Research Support, Non-U.S. Gov't