Home
Resources
Publications
Synthesis of a Fragment of Crystalline Silicon: Poly(Cyclosilane)

Synthesis of a Fragment of Crystalline Silicon: Poly(Cyclosilane)

Eric M Press, Eric A Marro, Sravan K Surampudi, Maxime A Siegler, Joel A Tang, Rebekka S Klausen

Angew Chem Int Ed Engl. 2017 Jan 9;56(2):568-572.

PMID: 27897420

Abstract:

We report a strategic synthesis of poly(cyclosilane), a well-defined polymer inspired by crystalline silicon. The synthetic strategy relies on the design of a functionalized cyclohexasilane monomer for transition-metal-promoted dehydrocoupling polymerization. Our approach takes advantage of the dual function of the phenylsilyl group, which serves a crucial role both in the synthesis of a novel α,ω-oligosilanyl dianion and as a latent electrophile. We show that the cyclohexasilane monomer prefers a chair conformation. The monomer design ensures enhanced reactivity in transition-metal-promoted dehydrocoupling polymerization relative to secondary silanes, such as methylphenylsilane. Comprehensive NMR spectroscopy yields a detailed picture of the polymer end-group structure and microstructure. Poly(cyclosilane) has red-shifted optical absorbance relative to the monomer. We synthesize a σ-π hybrid donor-acceptor polymer by catalytic hydrosilylation.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP766085	Methylphenylsilane		766-08-5	Price

As a specialist in analytical chemical Products, Alfa Chemistry offers consumers a wealth of raw materials and a full range of technologies and services.

QUICK LINKS

HEADQUARTERS

Tel:

Fax:

Email: