| 词条 | Polysilyne |
| 释义 |
Polysilynes are organosilicon compounds with the formula [RSi]n. Although their name suggests a relationship to alkynes, polysilynes are a class of silicon-based random network polymers primarily composed of tetrahedral silicon centers, each connected to one carbon and three Si centers. These compounds are prepared by Wurtz coupling of alkyltrichlorosilanes (RSiCl3): 3 Na + RSiCl3 → [RSi]n + 3 NaCl The methyl and hexyl derivatives have been described.[1] Poly(methylsilyne) (PMSy) is a dark yellow powder.[2] With some solvents (tetrahydrofuran, ether, toluene etc.) it forms a colloidal suspension that is clear and non-viscous, which may then be deposited as a film or coating on various substrates. Upon thermolysis, poly(methylsilyne) decomposes to silicon carbide. The optical properties of these materials has attracted attention.[3] References1. ^{{cite journal | last1 = Bianconi | first1 = Patricia A. | last2 = Weidman | first2 = Timothy W. | year = 1988 | title = Poly(n-hexylsilyne) synthesis and properties of the first alkyl silicon [RSi]n network polymer | url = | journal = J. Am. Chem. Soc. | volume = 110 | issue = | pages = 2342–2344 | doi = 10.1021/ja00215a077 }} 2. ^{{US patent|6989428}} "Methods of preparing polysilynes" 3. ^{{cite journal|title=Luminescence of Silicon Materials: Chains, Sheets, Nanocrystals, Nanowires, Microcrystals, and Porous Silicon|author=Brus, Louis|journal=Journal of Physical Chemistry|year=1994|volume=98|pages=3575-81|doi=10.1021/j100065a007}} 1 : Silanes |
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