Poly supports characterization

Munro, J. C. and Frank, C. W. (2004) Insitu formation and characterization of poly (ethylene glycol)-supported lipid bilayers on gold surfaces. Langmuir, 20, 10567-10575. 

The electrolysis apparatus for the polymerization is illustrated in Figure 2, which is characterized by a single cell without a partition membrane between the electrodes. In poor solvents of poly(phenyleneoxide) s such as methanol and acetonitrile, the polymer was deposited on the electrode, i.e. passivation of the electrode occured. Dichlo-romethane, nitrobenzene, and hydroquinone dimethyl ether were selected as the solvents because both the polymer and a supporting electrolyte dissolved in them and they were relatively stable under electrolysis conditions. 

All this leads to the question of how DNA affects nucleosomal stability at the molecular level. DNA bendability has been repeatedly put forward as a candidate to play an important role [280-282]. This property is related to the persistence length of DNA [283]. A study on the characterization of nucleosomes reconstituted onto methylated DNA [poly(dG-m dC) poly (dG-m dC)] [284] provides support to this hypothesis. Poly(dG-m dC) poly (dG-m dQ DNA can be induced to change from its B to its Z conformation in the presence of millimolar amounts of divalent ions [285] such as MgCl2. The persistence length of poly(dG-m dC) poly (dG-m dC) in the Z form in high salt was found to be 208 nm (ca. 612 bp) [286], a value much lower than that of the same polymer in the B form (93.8 nm, 276 bp) at... 

Poly (norbornene)-supported Co(III)-Salen complexes (44) and poly (styrene)-supported Co(III)-Salen complexes (45,46) were synthesized via newly developed procedures. In particular, a new, high-yielding, one-pot synthesis of non-symmetrical salens was developed (46). Hydrolytic kinetic resolutions were carried out at room temperature and the products were characterized by chiral GC. 

He, T. (2008) Towards stabilization of supported liquid membranes preparation and characterization of polysulfone support and sulfonated poly (ether ether ketone) coated composite hollow-fiber membranes. Desalination, 225, 82. 

In 1999, Muzafarov and coworkers published a preliminary report describing the synthesis of a hyperbranched poly(siloxane) from triethoxysilanol via a rapid, ammonia-catalyzed condensation process (Scheme 28)192. The authors acknowledged the potential difficulties of this process (e.g. head-head condensation leading to crosslinked products) but presented 29Si NMR data to support their conclusion that hyperbranched polymer was formed. The fact that no gel formation was observed also suggested that the polymerization proceeded as expected. The polymer, a transparent, yellow liquid, was characterized with NMR and IR spectroscopy, and GPC. 

Bimetallic complexes, such as RuPt(CO)5(PPh3)3, have been immobilized on phosphinated poly(styrene-divinyl-benzene) by a similar hgand-substitution reaction (equation 10). The resulting supported bimetallic complexes have been characterized by IR spectroscopy and are found to act as ethylene Hydrogenation catalysts. 

Preparation and Characterization of Poly(styrene—divinylbenzene)-Supported Catalysts... 

A barbell-like ABA-type triblock copolymer, comprised of poly(L-lysine) (PLL) dendrimers (A) and poly(ethylene glycol) connector (B) has been reported [202], The synthetic route involved the use of an a, poly(ethylene glycol) as the polymeric supporter, for the attachment of - NH2 protected lysine via an amidation reaction. The PLL den-drimer was generated at both ends of A by repeated liquid-phase peptide synthesis, as shown in Scheme 111. The intermediate products along with the final copolymers were characterized by MALDI-TOF MS. The results revealed that narrow molecular weight copolymers were synthesized having low molecular weights. 

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