For binary mixtures the phase separation depends on various typical parameters like pressure and temperature. In addition, in 1965 Debye and Kleboth showed that it can also be influenced by external electric fields. They found that a moderate…
Polymer Chemistry
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54,788 papers
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In the course of the routine use of NMR as an aid for organic chemistry, a day-to-day problem is the identifica- tion of signals deriving from common contaminants (water, solvents, stabilizers, oils) in less-than-analyti- cally-pure samples. This…
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A review with 409 refs. Mechanism and components (monomers, initiators, catalysts, ligands, solvents, and additives) for atom transfer radical polymn. (ATRP) are introduced. Polymers made by ATRP methods are discussed. They are gradient copolymer,…
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A review on living radical polymn. achieved with thiocarbonylthio compds. ZC(=S)SR by a mechanism of reversible addn.-fragmentation chain transfer (RAFT). Since we first introduced the technique in 1998, the no. of papers and patents on the RAFT…
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Abstract 10.1002/marc.200600625.abs The modification of polymers after the successful achievement of a polymerization process represents an important task in macromolecular science. Cycloaddition reactions, among them the metal catalyzed…
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This review highlights examples of recent applications of both the radical-mediated and base/nucleophile-initiated thiol-ene reactions in polymer and materials synthesis. Initial discussion focuses on mechanistic aspects of these reactions and also…
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Recent mechanistic developments in the field of controlled/living radical polymerization (CRP) are reviewed. Particular emphasis is placed on structure-reactivity correlations and "rules" for catalyst selection in atom transfer radical…
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Examination of nature's favorite molecules reveals a striking preference for making carbon-heteroatom bonds over carbon-carbon bonds-surely no surprise given that carbon dioxide is nature's starting material and that most reactions are performed in…
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Self-assembled monolayers (SAMs) of 1-alkenes on hydrogen-passivated silicon substrates were successfully patterned on the nanometer scale using an atomic force microscope (AFM) probe tip. Nanoshaving experiments on alkyl monolayers formed on…
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Insights into conducting research and the writing of scientific papers are given by Prof. Whitesides in this short essay. The manuscript and its guidelines has been circulated within the Whitesides' research group since 1989.
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Atom transfer radical polymerization (ATRP) is the most extensively studied controlled/living radical polymerization (CRP) method, with the interest originating primarily in its simplicity and broad applicability, and in the ability to prepare…
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The bioapplications of reversible addition-fragmentation chain transfer (RAFT) polymerization in biomaterials, drug delivery, gene therapy, glycopolymers, and bioconjugates, are reviewed. RAFT agents are organic compounds possessing a…
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As we enter the twenty-first century, research at the interface of polymer chemistry and the biomedical sciences has given rise to the first nano-sized (5-100 nm) polymer-based pharmaceuticals, the 'polymer therapeutics'. Polymer therapeutics…
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Tables of 1H and 13C NMR chemical shifts have been compiled for common organic compounds often used as reagents or found as products or contaminants in deuterated organic solvents. Building upon the work of Gottlieb, Kotlyar, and Nudelman in the…
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Following Sharpless' visionary characterization of several idealized reactions as click reactions, the materials science and synthetic chemistry communities have pursued numerous routes toward the identification and implementation of these click…
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Responsive polymer materials can adapt to surrounding environments, regulate transport of ions and molecules, change wettability and adhesion of different species on external stimuli, or convert chemical and biochemical signals into optical,…
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Atom transfer radical polymn. of styrene and Me acrylate is investigated using 1-phenylethyl chloride as a chlorine atom transfer precursor (initiator) and CuCl/2,2'-bipyridine complex as a chlorine atom transfer promoter (catalyst). The "living"…
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This review traces the development of additionfragmentation chain transfer agents and related ring-opening monomers highlighting recent innovation in these areas. The major part of this review deals with reagents that give reversible…
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Doctoral StudentUniversidad Tecnica Particular De Loja