Organometallic polymers applications

There are, however, other classes of inorganic and organometallic polymers that deserve consideration due to their considerable scientific and applicative relevance, such as polysilanes [28-31], polycarbosilanes [32,33],polysilazanes [33],polyborazines [34,35],polythiazenes [36], and, as an example,polymetal-locenylsilanes [37]. 

A scientific collection 841 of the large number of data on organometallic polymers containing various elements has been published. Tin-containing polymers, their use and their applications as coating materials are also discussed in this collection. 

Materials science applications have driven a vigorous search for new organometallic compounds, both molecular3 and polymeric,4 as precursors for new materials. In the case of polymers, this interest is driven by two different end applications. The first is the intrinsic properties of the materials, such as their electronic, photonic, or thermal/mechanical properties. The second is their use as precursors to purely inorganic materials. Organometallic polymers are particularly attractive precursors because of the inherent ease and versatility that they exhibit with regard to processing. 

X HE USE OF CHEMICAL APPROACHES to improve the processing, properties, and performance of advanced ceramic materials is a rapidly growing area of research and development. One approach involves the preparation of organometallic polymer precursors and their controlled pyrolysis to ceramic materials. This chapter will review the preparation and application of silicon-, carbon-, and nitrogen-containing polymer systems. However, the discussion is not exhaustive the focus is on systems with historical significance or that demonstrate key technological advances. 

Poly [p-(cc-lithiumalkyl)styrenes] with n = 1 to 4 were synthesized by the reaction of the corresponding halogen compounds with n-butyllithium. The application of these organometallic polymers as metallatir agents to halogen-containing... 

The expectation that organometallics containing ligands with conjugated and delocalized tt systems will provide useful applications for the synthesis of new polyunsaturated organic substrates or serve as precursors to organometallic polymers displaying electronic conductivity and nonlinear optical properties has stimulated intense research efforts into their synthesis and properties. 

The fibers are produced continuously (endless fibers, filaments) or discontinuously (short or staple fibers) depending upon the application. Most of the fibers are obtained by extruding a flowable form (melt or solution) of appropriate chemieal composition (Section 5.2.3 - 5.2.4). Other processes are based on deposition from the gas phase (Section 5.2.6.2) or thermal transformation (pyrolysis) of organic (Section 5.2.5) or organometallic polymers (Section 5.2.7). 

The present book contains nine chapters focusing on the design of imine and phosphorylide catalyst structures, the preparation of cycloaliphatic materials, polar/ nonpolar monomer copolymerizations, organometallic polymerizations in aqueous media, and current frontiers in ROMP and ADMET processes. Exactly forty years after the Nobel Prize for Ziegler and Natta, we give a concise description of the state of the art in these fascinating and rapidly developing fields. The authors present, likewise, viewpoints from the forefront of both academia and industrial research, so that basic science and polymer applications are equally covered. 

Extension of the correlations to polymers containing other elements, such as inorganic and organometallic polymers [16] containing boron [17,18] or phosphorus [19]. Such an extension appears feasible since the properties of such solids as amorphous selenium, and complicated chalcogenide-based alloys used in electrical and optical applications, can often be calculated by techniques resembling the methods used to study ordinary polymers [20,21]. 

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