نتایج جستجو برای: cyclic olefin polymer

تعداد نتایج: 192668  

2006
Zhiwei Zou Junhai Kai Michael J. Rust Jungyoup Han Chong H. Ahn

This paper presents a fully integrated nano interdigitated electrodes array (nIDA) and microfluidic system on polymer substrate. It can be sed as a miniaturized, sensitive, and easy-to-use impedimetric sensor for genomics, proteomics, and cellular analysis. The benefits gained from nanoscale IDA is very high sensitivity for monitoring protein binding behavior. With the intention of integrating ...

Journal: :Advanced Optical Materials 2021

Abstract This contribution demonstrates and discusses electrically tunable polymer planar Bragg gratings based on bulk cyclic olefin copolymers. A lithographic single‐writing‐step method femtosecond laser reductive sintering of copper(II) oxide nanoparticles are subsequently employed in order to generate buried photonic structures copper conducting paths top the substrate. way, necessary number...

2017
Ian P. Johnson David J. Webb Kyriacos Kalli Wu Yuan Alessio Stefani Kristian Nielsen Henrik K. Rasmussen Ole Bang

Fibre Bragg grating (FBG) sensors have been fabricated in polymer photonic crystal fibre (PCF). Results are presented using two different types of polymer optical fibre (POF); first multimode PCF with a core diameter of 50μm based on poly(methyl methacrylate) (PMMA) and second, endlessly single mode PCF with a core diameter of 6μm based on TOPAS cyclic olefin copolymer. Bragg grating inscriptio...

2008
Wei Wang

The title polymer, [Cu(2)Cl(2)(C(9)H(9)N(5))(2)](n), has been prepared by the solvothermal treatment of CuCl with 4-(2-allyl-2H-tetra-zol-5-yl)pyridine. The crystal structure shows that the title compound is a homometallic Cu(I)-olefin coordination polymer, in which the Cu(2)Cl(2) nodes are bridged by two olefin ligands. The asymmetric unit contains one-half of the monomer, the complete monomer...

Journal: :Journal of the American Chemical Society 2008
Andrew J Boydston Yan Xia Julia A Kornfield Irina A Gorodetskaya Robert H Grubbs

A series of cyclic Ru-alkylidene catalysts have been prepared and evaluated for their efficiency in ring-expansion metathesis polymerization (REMP). The catalyst structures feature chelating tethers extending from one N-atom of an N-heterocyclic carbene (NHC) ligand to the Ru metal center. The catalyst design is modular in nature, which provided access to Ru complexes having varying tether leng...

Journal: :journal of nanostructures 2012
m. najafi a. abbasi a. badiei

a number of redox-active coordination polymers (cps) or metal-organic frameworks (mofs) have been successfully synthesized using transition metals and bridging ligands. this article aims to deal with gathering the aforementioned disperse issues regarding the electroactive cps. it also goes towards illustrating the effects of various factors on the electrochemical behavior of cps including natur...

Journal: :international journal of civil engineering 0
r. abbasnia tehran 16844, iran a. holakoo tehran 16844, iran

one important application of fiber reinforced polymer (frp) is to confine concrete as frp jackets in seismic retrofit process of reinforced concrete structures. confinement can improve concrete properties such as compressive strength and ultimate axial strain. for the safe and economic design of frp jackets, the stress-strain behavior of frp-confined concrete under monotonic and cyclic compress...

Journal: :Transactions of the Materials Research Society of Japan 2008

2008
Wei Wang

The title compound, [CuBr(C(9)H(9)N(5))](n), prepared by the solvothermal treatment of CuBr with 4-(2-allyl-2H-tetra-zol-5-yl)pyridine, is a new homometallic Cu(I)-olefin coordination polymer in which dinuclear Cu(2)Br(2) units are linked by the organic olefin ligand 4-(2-allyl-2H-tetra-zol-5-yl)pyridine, which acts as a bidentate ligand connecting two neighbouring Cu(2)Br(2) units through the ...

2005
M. Makrocka-Rydzyk S. Jurga

Nuclear magnetic resonance, broadband dielectric spectroscopy and dynamic-mechanical thermal analysis were employed to study molecular dynamics of ethylene-norbornene copolymer. The analysis of experimental data indicates existence of three motional processes denoted as α, β, and γ in order of decreasing temperature. The α relaxation is related to the dynamic glass transition, while the β relax...

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