نتایج جستجو برای: thermally stable

تعداد نتایج: 274537  

Journal: :Dalton transactions 2013
Yu Chen Qihua Wang Tingmei Wang

A general method has been developed for the fabrication of highly dispersed and thermally stable bimetallic Au-Ag nanoparticles (NPs) stabilized on the inner wall of a mesoporous silica shell. In our approach, gold particles were formed in the first step on carbon spheres decorated with Sn(2+) cations. Upon Ag(+) adsorption and reduction by l-ascorbic acid in the second step, specific nanoparti...

Journal: :Chemical communications 2009
Barada Prasanna Dash Rashmirekha Satapathy John A Maguire Narayan S Hosmane

The facile synthesis of a thermally stable carborane appended symmetrical star-shaped molecule having six bulky o-carborane clusters on the periphery, thereby containing sixty boron atoms was accomplished via a cobalt-catalyzed [2+2+2] cycloaddition reaction.

Journal: :international journal of bio-inorganic hybrid nanomaterials 0

two new samples of poly(amide-imide)/nanocomposites containing bicyclo segment and dibenzalaceton moiety in the main chain were synthesized by a solution intercalation technique. poly(amide-imide) (pai) 8 as a source of polymer matrix was synthesized by the direct polycondensation reaction of n,n´-bis(4-carboxyphenyl)bicyclo[2,2,2]oct-7-ene-2,3,5,6-tetracarboxylic diimide 3 with 2,6-bis(4-amino...

Journal: :Chemical communications 2009
Kenneth J H Young Jonas Oxgaard Daniel H Ess Steven K Meier Timothy Stewart William A Goddard Roy A Periana

A discrete, air, protic, and thermally stable (NNC)Ir(III) pincer complex was synthesized that catalytically activates the CH bond of methane in trifluoroacetic acid; functionalization using NaIO4 and KIO3 gives the oxy-ester.

Journal: :Chemical communications 2006
Moumita Kar Amit Basak

Novel azobenzene based bispropargyl sulfones have been prepared in the thermally stable E-form: irradiation with a high-pressure Hg lamp converted them to the Z-isomer which showed higher DNA-cleaving efficiency.

Journal: :Chemical communications 2003
Chang-Wen Guo Yong Cao Song-Hai Xie Wei-Lin Dai Kang-Nian Fan

Thermally stable mesoporous core-shell structured titania microspheres with well-defined hollow interiors were directly prepared by a novel hydrothermal precipitation of TiCl4 in the presence of urea and ammonium sulfate.

Journal: :Chemical communications 2013
Chihiro Urata Benjamin Masheder Dalton F Cheng Atsushi Hozumi

Polymethylsilsesquioxane (PMSQ) films prepared by a simple sol-gel reaction of methyltriethoxysilane were found to possess thermally stable, durable, and temperature-dependent oleophobic properties under high temperature (~350 °C) conditions.

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