Accession Number:

ADA280842

Title:

Polysilanes with Various Architectures

Descriptive Note:

Technical rept.,

Corporate Author:

CARNEGIE-MELLON UNIV PITTSBURGH PA DEPT OF CHEMISTRY

Personal Author(s):

• Maxka, J.
• Chrusciel, J.
• Kim, H. K.
• Matyjaszewski, Krzysztof

Report Date:

1994-06-30

Pagination or Media Count:

16.0

Abstract:

Copolymers and homopolymers containing silicon atoms connected to three and four other silicon atoms have been prepared and characterized. We report the first evidence of dendritic polymers with silicon backbones. Copolymers made from RSiC13 and R1R2SiC12 resemble hybrid materials of polysilyne and polysilanes. Polymers, which contain tetrasilyl-substituted Si atoms, SiMe24Sin and SimMe2Sin have also been synthesized. These molecules appear to be the first hyperbranched polymers, which have applications based on their electronic properties. The properties of these molecules fit into the hierarchy of 1-D to 3-D topologies known for Si materials.

Descriptors:

• *SILICON
• *ARCHITECTURE
• *POLYSILANES
• ELECTRONICS
• MOLECULES
• MATERIALS
• MOLECULAR PROPERTIES
• HIERARCHIES
• POLYMERS
• COPOLYMERS
• ATOMS
• TOPOLOGY

Subject Categories:

• Inorganic Chemistry
• Polymer Chemistry
• Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE