نتایج جستجو برای: degree of functionalization

تعداد نتایج: 21168897  

Journal: :nanomedicine journal 0
hamidreza sadegh department of chemistry, science and research branch, islamic azad university, tehran, iran young researchers and elite club, science and research branch, islamic azad university, tehran, iranسازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (islamic azad university science and research branch) ramin shahryari-ghoshekandi department of chemistry, science and research branch, islamic azad university, tehran, iran young researchers and elite club, science and research branch, islamic azad university, tehran, iranسازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (islamic azad university science and research branch)

this review focuses on the latest developments in applications of carbon nanotubes (cnts) in medicine. a brief history of cnts and a general introduction to the field are presented. then, surface modification of cnts that makes them ideal for use in medical applications is highlighted. examples of common applications, including cell penetration, drug delivery, gene delivery and imaging, are giv...

Journal: :international journal of nanoscience and nanotechnology 2015
l. moradi n. izadi f. rostami

functionalization of multiwalled carbon nanotubes (mwcnts) with nh2 groups under a one pot reaction is studied. during the first step of the reaction, cl and chcl2 groups were attached to the surfaces of mwcnts through an electrophilic addition reaction. in the second step of process, cl atoms were replaced with nh2 and amino groups (ethylene diamine and butyl amine) under a nucleophilic substi...

Journal: :Physical chemistry chemical physics : PCCP 2013
Dragan Nikolić Karen A Moffat Valerie M Farrugia Alexander E Kobryn Sergey Gusarov Jordan H Wosnick Andriy Kovalenko

Simulations of microphase separation are carried out using the dissipative particle dynamics (DPD). By varying the concentration and temperature of resin solutions we explore mesomorphologies supported by the all-atom models. We found that for a low degree of functionalization the homogeneously distributed ionomers self-assemble into spherical micelles at solid loads below 31 wt%, subject to th...

Journal: :Organic letters 2005
Christopher R Swartz Sean R Parkin Joseph E Bullock John E Anthony Alex C Mayer George G Malliaras

[structure: see text]. Halogen functional groups on pentacene can be used both as synthetic handles for further functionalization as well as to tune the pi-stacking in these systems. The halogenated pentacene derivatives described here (X = Br, X' = H, and X = X' = F) are all stable and soluble, with reduction potentials significantly lower than that of the parent functionalized pentacene (X = ...

Journal: :Journal of the American Chemical Society 2003
Rajesh K Saini Ivana W Chiang Haiqing Peng R E Smalley W E Billups Robert H Hauge John L Margrave

Alkyllithium reagents may be used to attach alkyl groups to the sidewalls of fluoro nanotubes. Thermal gravimetric analysis combined with UV-vis-Nir spectroscopy has been used to provide a quantitative measure of the degree of functionalization. SWNTs prepared using the HiPco process exhibit a higher degree of alkylation than SWNTs from the laser-oven method, indicating that the smaller diamete...

2016
John F. Hartwig Matthew A. Larsen

The functionalization of C-H bonds has created new approaches to preparing organic molecules by enabling new strategic "disconnections" during the planning of a synthetic route. Such functionalizations also have created the ability to derivatize complex molecules by modifying one or more of the many C-H bonds. For these reasons, researchers are developing new types of functionalization reaction...

Journal: :Microscopy and Microanalysis 2015

ژورنال: مواد پرانرژی 2015

Formation of nitro aliphatic compounds are mainly consisted of direct nitro functionalizing of alkanes and alkenes. Nitro functionalization of alkenes has particular importance in the field of energetic materials due to unsaturated nature and the ability to synthesize a wide range of C-nitro aliphatic compounds. Considering the importance of synthesis of these compounds, the use of nitrile iod...

Journal: :Advanced Materials Interfaces 2023

Since its isolation, graphene has received growing attention from academia and industry due to unique properties. However, the “what is my material” barrier hinders further commercialization. X-ray photoelectron spectroscopy (XPS) considered as a method of choice for determination elemental chemical composition. In this work influence morphology particles on XPS results studied investigated fun...

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