نتایج جستجو برای: glass functionalization

تعداد نتایج: 81931  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اراک - دانشکده علوم پایه 1392

الکتروانباشت یکی از ساده¬ترین، انعطاف¬پذیرترین و کم¬هزینه¬ترین روش¬های لایه¬نشانی نسبت به سایر روش¬های موجود بر پایه¬ی تکنیک خلأ می¬باشد که امکان رشد تک لایه¬ای¬ها، چندلایه¬ای¬ها و لایه¬های آلیاژی مغناطیسی را در شرایط طبیعی دما و فشار فراهم می¬کند. در این پروژه لایه¬های نازک ag،co و آلیاژیag-co بر روی زیرلایه¬های فلزی مس و au2pdag/glass،به روش الکتروانباشت با ¬درصدهای مختلف کبالت درمد کرنوکول...

Journal: :Journal of the American Chemical Society 2009
William J Tenn Brian L Conley Claas H Hövelmann Mårten Ahlquist Robert J Nielsen Daniel H Ess Jonas Oxgaard Steven M Bischof William A Goddard Roy A Periana

We report that SeO2 catalyzes the facile oxy-functionalization of (CO)5Re(I)-Me(delta-) with IO4(-) to generate methanol. Mechanistic studies and DFT calculations reveal that catalysis involves methyl group transfer from Re to the electrophilic Se center followed by oxidation and subsequent reductive functionalization of the resulting CH3Se(VI) species. Furthermore, (CO)3Re(I)(Bpy)-R (R = ethyl...

Journal: :the iranian journal of pharmaceutical research 0
naghmeh hadidi department of pharmaceutics, school of pharmacy, shaheed beheshti university of medical sciences, tehran, iran. seyed farshad hosseini shirazi department of pharmacology & toxicology, school of pharmacy, shaheed beheshti university of medical sciences, tehran, iran. farzad kobarfard department of pharmaceutical chemistry, school of pharmacy, shaheed beheshti university of medical sciences, tehran, iran. nastaran nafissi-varcheh department of pharmaceutical biotechnology, school of pharmacy, shaheed beheshti university of medical sciences, tehran, iran. reza aboofazeli department of pharmaceutics, school of pharmacy, shaheed beheshti university of medical sciences, tehran, iran.

among the numerous nanosized drug delivery systems currently under investigation, carbon nanotubes (cnts), regardless of being single or multiple-walled, offer several advantages and are considered as promising candidates for drug targeting. despite the valuable potentials of cnts in drug delivery, their toxicity still remains an important issue. after the pegylation of single-walled cnts (swcn...

Journal: :Advanced Functional Materials 2021

The magnesium–sulfur (Mg-S) battery has attracted considerable attention as a candidate of post-lithium systems owing to its high volumetric energy density, safety, and cost effectiveness. However, the known shuttle effect soluble polysulfides during charge discharge leads rapid capacity fade hinders realization sulfur-based technology. Along with approaches for cathode design electrolyte formu...

Journal: :Organic letters 2008
Shi Tang Peng Peng Zhi-Qiang Wang Bo-Xiao Tang Chen-Liang Deng Jin-Heng Li Ping Zhong Nai-Xing Wang

A novel palladium-catalyzed oxidative C-H functionalization protocol for the synthesis of (2-oxoindolin-3-ylidene)methyl acetates has been developed. In the presence of Pd(OAc)2 and PhI(OAc)2, a variety of N-arylpropiolamides underwent the C-H functionalization reaction with acids to afford the corresponding (E)-(2-oxoindolin-3-ylidene)methyl acetates selectively in moderate to excellent yields.

Journal: :Chemical communications 2014
Jan U Kahlert Aditya Rawal James M Hook Louis M Rendina Mohammad Choucair

The conjugated aromatic system of graphene was used to trap the reactive, boron-rich 1,2-carborane cluster. Functionalization of the graphene surface was confirmed by solid-state MAS (11)B NMR spectroscopy and quantified by X-ray photoelectron spectroscopy. This work represents the first confirmed example of direct functionalization of a graphene lattice with carboranes.

2008
Gaurav Mago Carlos Velasco-Santos Ana L. Martinez-Hernandez Dilhan M. Kalyon Frank T. Fisher

There is tremendous interest in using low loadings of multiwalled carbon nanotubes (MWNTs) to enhance the multifunctional properties of polymers, with functionalization often pursued to increase the dispersion and effective reinforcement of MWNTs within the polymer. In our interest to understand the effect of MWNT functionalization on Poly (butylene terephthalate) (PBT) crystallization kinetics...

Journal: :Nanoscale 2014
L Sasso S Suei L Domigan J Healy V Nock M A K Williams J A Gerrard

Protein nanofibrils offer advantages over other nanostructures due to the ease in their self-assembly and the versatility of surface chemistry available. Yet, an efficient and general methodology for their post-assembly functionalization remains a significant challenge. We introduce a generic approach, based on biotinylation and thiolation, for the multi-functionalization of protein nanofibrils...

2017
René H. J. Vervuurt Bora Karasulu Marcel A. Verheijen Wilhelmus (Erwin) M. M. Kessels Ageeth A. Bol

A novel method to form ultrathin, uniform Al2O3 layers on graphene using reversible hydrogen plasma functionalization followed by atomic layer deposition (ALD) is presented. ALD on pristine graphene is known to be a challenge due to the absence of dangling bonds, leading to nonuniform film coverage. We show that hydrogen plasma functionalization of graphene leads to uniform ALD of closed Al2O3 ...

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