two steps synthetic method for the preparation of a novel emulsion stabilizer called poly(ricineoleic acid-b-ethyleneglycol-b-ricineoleic acid) with average mass molecular weight of 7000 daltons is investigated. in the first step, oligoricineoleic acid with average mass molecular weight of 1800 daltons is synthesized (yield 70%). in the second step, the desired copolymer is  synthesized from th...

The cyclized copolymerization of methacrylic anhydride with N phenyldimethacrylamide and methacrylonitrile was carried out. The polymer consists of six-membered cyclic acid anhydride and five-membered imide ring. The cyclic acid anhydride was hydrolyzed by generated acid catalyst from photo-acid generator (PAG). The hydrolyzed copolymer is dissolved in an alkaline solution. We applied this copo...

An acid labile branched PDMAEMA/acetal copolymer with amino group was synthesized by the DE-ATRP and followed by Michael addition. The degradation of the polymer was strongly pH-dependent. High nucleic acid transfection efficiency with low cytotoxicity was observed compared to its non-degradable copolymer counterpart.

Partially methylated polycytidylic acids were used as templates in an RNA-dependent RNA polymerase reaction with enzyme isolated from Micrococcus lysodeikticus. The presence of methylated cytidylic acid residues in the template led to the formation of a copolymer of uridylic and guanylic acids. The composition of this product copolymer was dependent on the extent of methylation of the polycytid...

The annealed copolymer polyriboinosinic acid x polyriboinosinic acid reacted with Limulus amoebocyte lysate to cause gelation at a concentration approximately 2,000-fold or greater than bacterial endotoxins. This copolymer was pyrogenic in rabbits and demonstrated hypochromicity, but no significant correlation was noted among Limulus amoebocyte lysate reactivity, progenicity, and hypochromicity...

copolymerization of aniline and 2-anilinoethanol was carried out by electrochemical and chemical polymerization. homo and copolymer thin films were synthesized electrochemically, under cyclic voltammetric conditions in aqueous solutions of sulfuric acid as electrolyte at room temperature. the films were deposited on the surface of working electrode [glassy carbon ()gc)(] versus ag/agcl electrod...

Copolymerisation of an Osmium (II) functionalised pyrrole moiety, Osmium -bis-N,N’-(2,2’bipyridyl)-N-(pyridine-4-ylmethyl-(8-pyrrole-1yl-octyl)-amine)chloride (1) with 3methylthiophene was carried out. The resulting conducting polymer film exhibited a clear redox couple associated with the Os response and the familiar conducting polymer backbone signature. The effect of film thickness upon the ...

Abstract The structure of model compounds for the amphiphilic copolymer poly(diisobutylene‐ alt ‐maleic acid), DIBMA, is investigated with (gas phase) B3LYP/6‐31G** and PM7 calculations. It found that in monoprotonated state repeating unit strong (about 70 kJ mol −1 ) ionic hydrogen bonds are formed within succinate rings, which impart partial structural rigidity on backbone copolymer. Based li...

An orthogonal approach to the creation of multiple nanoscale templates from a single supramolecular block copolymer system is presented. The enabling feature of this strategy is the design of block copolymers that incorporate independent degradation chemistries which permits each block copolymer to be addressed individually and sequentially. By blending a block copolymer containing H-bond donor...