Poly phenylated

Low-density polyethylene (LDPE) Poly(phenyl sulfone)... 

Properties Unfilled 20% glass-fiber- reinforced Unfilled 20% glass-fiber- reinforced Poly(ether sulfone) Poly(phenyl sulfone)... 

Figure 9.17 Plot of log [i ]M versus retention volume for various polymers, showing how different systems are represented by a single calibration curve when data are represented in this manner. The polymers used include linear and branched polystyrene, poly(methyl methacrylate), poly(vinyl chloride), poly(phenyl siloxane), polybutadiene, and branched, block, and graft copolymers of styrene and methyl methacrylate. [From Z. Grubisec, P. Rempp, and H. Benoit, Polym. Lett. 5 753 (1967), used with permission of Wiley.]...

PPO poly(phenyl oxide) SCF self-consistent field ... 

Polystyrene Poly(phenyl ethene) Poly(l-phenyl ethylene)... 

PMPPIC = poly(methylene) poly(phenyl) isocyanate PVC = poly(vinyl chloride) p = density Tf = fiber radius... 

Other electron-deficient heterocyclic systems have also been investigated as electron-transporting materials. In particular, devices employing poly(phenyl qui-noxaline) 43 as an ECHB layer have shown improvements in device efficiency when used in conjunction with an emissive PPV layer [75]. 

A large part of organic and macromolecular chemistry starts with the chemical functionalization of benzene, and benzene units serve us building blocks for important polymers. Naturally, benzene-based aromatic materials also represent an important subclass of jt-conjugaled architectures. Despite some synthetic difficulties related to the generation of structurally well-defined oligo- and poly(phenyl-... 

FIGURE 24.4 Master curves of the local segmental relaxation times for 1,4-polyisoprene (-y = 3.0) 1,2-polybutadiene (7=1.9) polyvinylmethylether (7 = 2.55) polyvinylacetate (7 = 2.6) polypropylene glycol (7 = 2.5) polyoxybutylene (7 = 2.8) poly(phenyl glycidyl ether)-co-formaldehyde (7 = 3.5) polymethylphe-nylsiloxane (7 = 5.6) poly[(o-cresyl glycidyl ether)-co-formaldehyde] (7 = 3.3) and polymethyltolylsiloxane (PMTS) (7 = 5.0) [15 and references therein]. Each symbol for a given material represents a different condition of T and P. 

Poly(phenyl- and p-tolysilylenes) produced with these catalysts are brittle glasses and poly(benzyl- and n-hexylsilylenes) are viscous oils. All of the polymers are atactic and highly soluble in most organic solvents. They have been shown by a variety of... 

Figure 9. Change in UV Absorbance for Poly(phenyl-methyl-co-n-propyl-methylsilane) Copolymers at Their Respective 1MX as a Function of UV Exposure Time.

This effect has also been observed in polyphosphazenes containing alkyl- or phenyl-carborane as pendent groups.12 A typical synthetic route to poly(phenyl-carboranyl-di-trifluoroethoxy-phosphazene) having pendent phenyl-carborane groups is shown in scheme 4. A substantial improvement in the thermal stability of the polymer was observed. This is attributed to a retardation of the ring-chain de-polymerization mechanism due to steric hindrance effects of the carborane units, inhibiting helical coil formation. 

Frequently B will also undergo a back hydrogen transfer which regenerates the parent ketone, as well as cyclization (in most cases a minor reaction) as a result of this competition the quantum yields of fragmentation are typically in the 0.1-0.5 range in non-polar media. When the Norrish Type II process takes place in a polymer it can result in the cleavage of the polymer backbone. Poly(phenyl vinyl ketone) has frequently been used as a model polymer in which this reaction is resonsible for its photodegradation, reaction 2. 

Poly vinyl chloride v Graft(copolymer) PS/PMMA Poly (phenyl siloxane)... 

The polymer types shown are linear polystyrene, two types of branched polystyrene (methyl methacrylate), poly (vinyl chloride), poly butadiene poly (phenyl soiloxane), and two types of copolymer. 

The product from the dehydrocoupling of PhSiHj, poly(phenyl(H)silylene), can itself be used as a precursor polymer for further functionalization, using the susceptibility of the Si-H functionality to radical attack, as is described in Section 3.11.4.2. 

A different methodology using the reactivity of the Si-H bond in 38 was reported in two communications, as COMC (1995) was being completed. Precursor poly[phenyl(H)silylene] 38 is conveniently prepared by the... 

A similar approach was taken by Moore [27], utilizing poly(phenyl acetylene) dendrimers with a dimethylbenzene moiety attached at the core of the dendrimer. An anomalous shift (41 nm) in the fluorescence spectra of the probe in various nonpolar hydrocarbon solvents was observed for G5 and G6, but not for G1 to G4. This observation confirmed significant in the size and shape changes for these dendrimers between G4 and G5. 

Gu Z, Bao Y-J, Zhang Y, Wang M, Shen Q-D (2006) Anionic water-soluble poly(phenyle-nevinylene) alternating copolymer high-efficiency photoluminescence and dual electroluminescence. Macromolecules 39 3125-3131... 

Transition metal catalysed precipitation polymerization utilizes the advances in the development of suitable catalysts for homogeneous reactions in SCCO2. For example, the synthesis of poly(phenyl acetylene) may been achieved using a... 

Figure 10.6 Substituted triphenylphosphine used to solubilize [Rh(nbd)(acac)] (nbd = nor-bornadiene, acac = acetylacetonate) precursor for the synthesis of poly(phenyl acetylene) in scC02...

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