نتایج جستجو برای: polyphenylene chain

تعداد نتایج: 295762  

Journal: :Nature chemistry 2014
Akimitsu Narita Xinliang Feng Yenny Hernandez Søren A Jensen Mischa Bonn Huafeng Yang Ivan A Verzhbitskiy Cinzia Casiraghi Michael Ryan Hansen Amelie H R Koch George Fytas Oleksandr Ivasenko Bing Li Kunal S Mali Tatyana Balandina Sankarapillai Mahesh Steven De Feyter Klaus Müllen

The properties of graphene nanoribbons (GNRs) make them good candidates for next-generation electronic materials. Whereas 'top-down' methods, such as the lithographical patterning of graphene and the unzipping of carbon nanotubes, give mixtures of different GNRs, structurally well-defined GNRs can be made using a 'bottom-up' organic synthesis approach through solution-mediated or surface-assist...

2004

Toughening mechanisms in a nylon 6,6/polyphenylene oxide (PA/PPO) alloy are studied. This alloy consists of well dispersed PPO particles (containing an elastomeric phase) in a PA matrix. Both crazing and shear yielding mechanisms are found to be sequentially operative in this alloy. When a crack propagates in the material, a crazed zone forms ahead of the crack tip. This crazed zone then transf...

Journal: :Nucleation and Atmospheric Aerosols 2021

Through dip coating method monodisperse nickel nanoparticles assisted carbon membrane was prepared on porous alumina disc support. The solution by blending of thermally stable polymer polyphenylene oxide (PPO) and labile polyvinylpyrrolidone (PVP) followed addition nanoparticles. Size nanoparticles, surface porosity, average pore size, element composition optical properties the were investigate...

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