نتایج جستجو برای: degree of functionalization

تعداد نتایج: 21168897  

Journal: :Nanoscale 2017
A Aires J F Cadenas R Guantes A L Cortajarena

A key challenge in the treatment of cancer with nanomedicine is to engineer and select nanoparticle formulations that lead to the desired selectivity between tumorigenic and non-tumorigenic cells. To this aim, novel designed nanomaterials, deep biochemical understanding of the mechanisms of interaction between nanomaterials and cells, and computational models are emerging as very useful tools t...

2017
Cristian Petcu Violeta Purcar Cătălin-Ilie Spătaru Elvira Alexandrescu Raluca Şomoghi Bogdan Trică Sabina Georgiana Niţu Denis Mihaela Panaitescu Dan Donescu Maria-Luiza Jecu

Ultra-hydrophobic bilayer coatings on a glass surface were fabricated by sol-gel process using hexadecyltrimethoxysilane (C16TMS) and tetramethoxysilane (TMOS) (1:4 molar ratio) as precursors. After coating, silica nanoparticles (SiO₂ NPs) functionalized with different mono-alkoxy derivatives (methoxytrimethylsilane, TMeMS; ethoxydimethylvinylsilane, DMeVES; ethoxydimethylphenylsilane, DMePhES;...

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.

Journal: :Chemistry 2011
M Eugenia Pérez-Ojeda Beatriz Trastoy Íñigo López-Arbeloa Jorge Bañuelos Ángel Costela Inmaculada García-Moreno Jose Luis Chiara

New hybrid organic-inorganic dyes based on an azide-functionalized cubic octasilsesquioxane (POSS) as the inorganic part and a 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BDP) chromophore as the organic component have been synthesized by copper(I)-catalyzed 1,3-dipolar cycloaddition of azides to alkynes. We have studied the effects of the linkage group of BDP to the POSS unit and the degree of ...

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.

2015
G. Vimala E. Murugan

Multiwalled carbon nanotubes (MWCNTs)amphiphilic poly(amidoamine) (PAMAM) dendrimers (APAMAM) based hybrids were developed through individual functionalization of PAMAM with generation 4 (G4) and generation 5 APAMAM (G5) on MWCNTs. The two hybrids were used as matrices and deposited with silver (Ag) nanoparticles (NPs) to develop another two types of new MWCNT based hybrids viz., MWCNTAPAMAM (G...

Journal: :Angewandte Chemie 2021

Cyclodextrin poly-functionalization has fueled progress in their use multiple applications such as enzyme mimicry, but also the polymer sciences, luminescence, sensors or for biomedical applications. However, regioselective access to a given pattern of functions on β-cyclodextrin is still very limited. We uncover new orienting group, thioacetate, that expands toolbox available cyclodextrin poly...

2012
In-Yup Jeon Dong Wook Chang Nanjundan Ashok Kumar Jong-Beom Baek

Albeit initially reported by a Russian group and reported again by Oberlin and co-workers (Oberlin et al., 1976), carbon nanotubes (CNTs) were first brought to the attention of greater scientific community by Ijima in 1991. It was not until 1991 that CNTs came to limelight unfolding its exotic properties. Following this report, academic interest in this onedimensional nanomaterial has grown rem...

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...

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