Ternary amino groups

They used amphiphilic methacrylate polymer with a ternary amino group, poly(A,A-diisopropylaminoethyl methacrylate (DlPAM)-co-n-decyl methacrylate (DMA)) (PDD), composed of 25 unitmol% of DMA in the polymer as a polymeric additive to SPU. The content of the PDD in the SPU was in the range of 1-5 wt%. The surface characteristics of the SPU/PDD polymer alloy were examined by XPS and dynamic contact angle measurements with water. These evaluations revealed that the PDD was located on the surface of the polymer alloy. This induced a more hydrophilic and movable surface compared with untreated SPU. Protein adsorption from human plasma was also reduced on the surface of the SPU/PDD polymer alloy. During the blending process, the solubility of the polymer added to the SPU is important. The solubility parameter of the polymer is one of the factors used to estimate the blending state of both polymers. 

Porphyrin II) was bound to the amino groups of a ternary block copolymer poly-ethyleneglycol-poly(p-aminomethyl-styrene-co-styrene)-polyethylenglycoP>. 

Cw-platin diacetate binds to ethidium bromide and yields a thermochromic 1 1 complex. The transition at 490 nm (orange) shifts to 640 nm (blue) as the temperature is increased and a proton transfer occurs between the coordinated amino group of the dye and the acetate counterion (Fig. 8.6.19). Ternary ethid-ium-cisplatin-DNA complexes are also known (Ren et al., 1993). 

Under alkaline conditions, sixteen Pb(II) ions link the secondary hydroxyl side of y-CyD to form a metal-ion-mediated head-to-head dimer [217]. All the secondary hydroxyl groups are deprotonated and coordinated to bind Pb(II) ions forming a hexadecanuclear lead(II) alkoxide. Introduction of ionic substituents on CyDs enhances their metal-binding ability. Two amino groups introduced on the primary hydroxyl side of jS-CyD can chelate a platinum ion [64]. Imidazole-appended yS-CyD forms a ternary complex with a Cu(II) ion and L-tryptophanate [61]. The 6-amino and imidazolyl groups of the host molecule and the carboxyl and amino groups of L-tryptophanate are coordinated to the Cu(II) ion. 

To explain this behaviour, we can assume that the two amino groups are arranged in cis disposition as found for analogous copper(II) ternary complexes with histamine and PheO or TrpO ligands in the solid state [40]. Assuming this to be so, only the indole... 

Cyanide combines reversibly with the carboxylase in the presence of ribulosebisphosphate to form an inactive ternary complex. Although the exact chemical nature of the cyanide adduct is unknown, it is unlikely to have arisen by condensation with a Schiff base, because attempts to detect a Schiff base (which conceivably could be formed by the reaction of a protein amino group with the substrate carbonyl) by borohydride reduction were negative. An enzyme-COo complex can be stabilized by treatment with diazomethane. Lorimer et ah suggested recently that this might be a consequence of esterification of a carbamate formed by... 

A ternary block copolymer, which contains amino groups in the center block, was synthesized by coupling cnt/o-telechelic poly[styrene-co-p-(ami-nomethyl)styrene] with an excess of poly(ethyleneoxide). The center block was prepared by the UV-irradiation polymerization of styrene, p-(amino-methyl)styrene, and bis(/7-acetoxyphenyl)sulfide (molecular weight 42,000). The carboxylic acid derivative of iron-porphyrin was activated with ethyl chloroformate and then reacted with the amino group of the center block of the ternary copolymer. 

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