4-methoxyphenyl poly

Figure 4.18 CD spectra of (a) poly[ methyl(methoxyphenyl)silane -co- (5 )-2-methylbutyl-(methoxyphenyl)silane ]s (30-32) and (b) poly[ -hexyl(methoxyphenyl)-silane -co- (5)-2-methylbutyl(methoxyphenyl)silane ]s (33 and 34) in THF at 20°C.

This paper discusses the synthesis and physico-chemical consequences of binding low ionization 17-donors, such as TTF monocarboxylic acid (I) and l,3-di-(p-methoxyphenyl)-5-(p-hydroxyphenyl)-A2-pyrazoline (II) to a poly(vinylbenzylchloride) backbone. 

Methoxyphenyl tellurium cyanide and poly(4-lithiostyrene) produced a 4-methoxy-phenyltelluro-substituted polymer6. 

Taniguchi [4] prepared high molecular weight poly(ethylene-co-carbon monoxide) using a catalytic mixture consisting of palladium acetate, l,3-bis[di(2-methoxyphenyl)-phosphino]-propane, sulfuric acid, and 1,4-benzoquinone. 

Fig. 21 Perforated lamellar structure hierarchically formed by poly(slyrcne-t>-(2,5-bis[4-methoxyphenyl] oxycarbonyl)styrene) structure. Reprinted with permission from [107]. 2005 American Chemical Society...

Diastereoselective [2+2] photocycloaddition of a polymer-supported cyclic chiral enone with ethylene has been reported (Scheme 12.33) [43]. The auxiliary was derived from (-)-8-(p-methoxyphenyl) menthol (87). Protection of the secondary alcohol and demethylation were carried out to give (-)-8-(p-hydroxyphenyl)menthyl acetate (88). An alkyl linker was introduced and finally loaded to poly (ethylene glycol) grafted Wang resin. Deprotection of the alcohol functionality was followed by esterification with cyclohexen-3-one-l-carboxylic acid to provide the chiral enone 89. The photochemical reaction with ethylene was performed by irradiating with light (k > 280 nm). Trifluoroacetic acid (TFA) or aqueous hydrolysis with... 

Blends of PEST with acrylic polymers are limited to systems with acrylic elastomers. Examples are listed in Table 1.37. PBT and PET were reported to form miscible blends with either a poly-p-methoxyphenyl methacrylate or polyCphenyl methacrylate) [Siol etal, 1993, 1994]. 

A significant difference between poly(RCOT)s and unsubstituted polyacetylene is that the former bear substituents which may perturb their electronic properties. The optical absorbances (Table 10-3) probe this to some extent, but electrochemical data are more sensitive. For example, whereas polyCs ec-butylCOT) and poly(Me3SiCOT) have similar absorption spectra, both the formal reduction and oxidation potentials of the silyl-substituted polymer are shifted positive of the alkyl-substituted polymer (Fig. 10-27). This is expected, based on the more electropositive nature of the silyl substituent [139]. Also, while the effects are not large, the substitution of either an electron-donating (para-methoxyphenyl) or an electron-withdrawing (para-trifluoromethylphenyl) substituent do perturb the polymer s electronic properties, with the latter material being harder to oxidize and easier to reduce than the former. 

MDDB 4-Methoxyphenyl[(((4-dipropargylamino)phenyl)oxy)dodecanyl]oxy] benzoate PMDDB Poly 4-Methoxyphenyl[(((4-dipropargylamino)phenyl)oxy)dodecanyl]oxy benzoate... 

In order to produce polysilanes with controlled optical properties, the substituents have to be picked up properly thus, poly(alkyl(methoxyphenyl)silane) homo and copolymers are reported by Nakashima and Fujiki [40], who found that poly(alkyl(alkoxyphenyl)silane) with methyl, ethyl and n-hexyl moieties showed a typical absorption peak around 340-360 nm atUibuted to the delocalized cr-conjugation. 

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