tailieunhanh - Báo cáo hóa học: "Self-assembly of micelles into designed networks"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Self-assembly of micelles into designed networks | Nanoscale Res Lett 2007 2 119-122 DOI S11671-007-9041-0 NANO EXPRESS Self-assembly of micelles into designed networks Yong J. Yuan Alexander T. Pyatenko Masaaki Suzuki Published online 16 February 2007 to the authors 2007 Abstract The EO20PO70EO20 molecular weight 5800 amphiphile as a template is to form dispersed micelle structures. Silver nanoparticles as inorganic precursors synthesized by a laser ablation method in pure water are able to produce the highly ordered vesicles detected by TEM micrography. The thickness of the outer layer of a micelle formed by the silver nanoparticles interacting preferentially with the more hydrophilic EO20 block was around nm. The vesicular structure ensembled from micelles is due to proceeding to the mixture of cubic and hexagonal phases. Keywords Self-assembly Template Silver nanoparticles The fabrication of a designed arrangement of matter at the nano-scale level is a central goal of contemporary engineering endeavors 1 . Well-defined nanostructures at a scale of less than 100 nm were produced due to the size of building blocks and the weak interactions between the building blocks 2 . Amphiphilic block copolymers consist of a hydrophobic polymer that is covalently linked to a hydrophilic polymer. In aqueous solutions this leads to self-assembly in to Y. J. Yuan H Industrial Research Limited Crown Research Institutes . Box 31-310 Lower Hutt New Zealand e-mail A. T. Pyatenko M. Suzuki Nanobiotechnology Group AIST Institute for Biological Resources and Functions 2-17-2-1 Tsukisamu-Higashi Toyohira-ku Sapporo Japan micelle structures and lyotropic phases 3 . Triblock copolymers such as poly ethylene oxide-b-propylene oxide-b-ethylene oxide offer important materials advantages not associated with conventional low molecular amphiphiles. It was also reported that CdTe crystal growth occurs in a mixture of cubic and hexagonal structures to form tetrapods 4 . These complex fluids can produce designed .