Synthesis and Properties of Poly(phenylene ether) Diblock Copolymers Bearing Acid Substituents
نویسندگان
چکیده
منابع مشابه
Synthesis and Characterization of ZnO Nanostructures Templated Using Diblock Copolymers
The development of self-assembled ZnO nanoparticles within a diblock copolymer matrix using wet chemical processing specific to ZnO is reported. Diblock copolymers consisting of polynorbornene and poly(norbornene–dicarboxcylic acid) (NOR/NORCOOH) were synthesized with a block repeat unit ratio of 400 for the first block and 50 for the second block, to obtain spherical microphase separation. The...
متن کاملSynthesis and evaluation of MePEG-PCL diblock copolymers: surface properties and controlled release behavior
The amphiphilic block copolymers are composed of various combinations of hydrophilic and hydrophobic block unimers. The variation in unimer ratio alters the surface as well as micelle-forming properties of the block copolymers. These nanoscopic micelles have the ability to encapsulate hydrophobic compounds and act as potential drug carrier. MePEG-PCL copolymers with various block lengths were s...
متن کاملElastic properties of polymer interfaces: aggregation of pure diblock, mixed diblock, and triblock copolymers.
Block copolymers adsorbing to an interface between two immiscible homopolymers modify the elastic constants of this interface. Within self-consistent field calculations for Gaussian chains, we determine how the bending constants vary in dependence on the block copolymer concentration and architecture. Four phenomena are discussed. (i) When a tricritical or isotropic Lifshitz critical point is a...
متن کاملModular synthesis of biodegradable diblock copolymers for designing functional polymersomes.
Polymer vesicles, or polymersomes, are promising candidates for applications in drug delivery and tissue imaging. While a vast variety of polymers have been explored for their ability to assemble into polymersomes, relatively little research on the functionalization of these polymers has been reported. We present here a novel route for the synthesis of poly(caprolactone)-b-poly(ethylene glycol)...
متن کاملSynthesis and physical properties of zethrene derivatives bearing donor/acceptor substituents at 7,14-positions.
Zethrene derivatives substituted by phenylethynyl groups bearing electron-donating and/or accepting groups were synthesised by iodine-induced transannular cyclisation of dehydrodinaphtho[10]annulene as the pivotal step followed by Sonogashira coupling reaction. Their physical properties were investigated to elucidate the effects of the substituents on the electronic configuration of the zethren...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: KOBUNSHI RONBUNSHU
سال: 2008
ISSN: 0386-2186,1881-5685
DOI: 10.1295/koron.65.145