نتایج جستجو برای: Amine functionalization

تعداد نتایج: 30046  

2016
Yun Kyeong Kim Sung-min Hyun Jae Hwa Lee Tae Kyung Kim Dohyun Moon Hoi Ri Moon

To enhance the carbon dioxide (CO2) uptake of metal-organic frameworks (MOFs), amine functionalization of their pore surfaces has been studied extensively. In general, amine-functionalized MOFs have been synthesized via post-synthetic modifications. Herein, we introduce a one-step construction of a MOF ([(NiLethylamine)(BPDC)] = MOFNH2; [NiLethylamine](2+) = [Ni(C12H32N8)](2+); BPDC(2-) = 4,4'-...

Journal: :Organic & biomolecular chemistry 2010
Julia Morales-Sanfrutos Javier Lopez-Jaramillo Mariano Ortega-Muñoz Alicia Megia-Fernandez Francisco Perez-Balderas Fernando Hernandez-Mateo Francisco Santoyo-Gonzalez

The easy functionalization of tags and solid supports with the vinyl sulfone function is a valuable tool in omic sciences that allows their coupling with the amine and thiol groups present in the proteogenic residues of proteins, in mild and green conditions compatible with their biological function.

Journal: :Chemical communications 2005
Lei Zhang Jun Zhang Nicolaus Schmandt Justin Cratty Valery N Khabashesku Kevin F Kelly Andrew R Barron

Thiol- and thiophene-functionalized SWNTs prepared via the reaction of a substituted amine with fluoronanotubes show similar levels of sidewall functionalization, however, the use of Au nanoparticles as chemical markers for AFM gives misleading results for substituent distribution since STM shows the thiol substituents grouped in bands while the thiophene substituents uniformly distributed alon...

2006
Mabel Moreno Eglantina Benavente Vladimir Lavayen Clivia M. Sotomayor Torres

The functionalization of bentonite by intercalation of surfactants dodecylamine, hexadecylamine, octadecylamine, and the octadecyltrimethylammonium cation is described. Products are characterized by elemental analysis, thermal analysis, FT–IR spectra, and powder X-ray diffraction analysis. Laminar amine-clay nanocomposites contain about one mol amine per (Si,Al)4 clay unit, while the cationic s...

Journal: :Dalton transactions 2013
Mirtha A O Lourenço Renée Siegel Luís Mafra Paula Ferreira

N-alkylation reaction of amine functionalized phenylene moieties in crystal-like mesoporous silica is successfully achieved with about 87% of conversion in two reaction cycles. A potassium iodide catalyzed method commonly used for the selective N-monoalkylation of aniline is adapted and optimized to the N-monoalkylation reactions of the amine functionalized periodic mesoporous phenylene-silica ...

Journal: :Chemical communications 2010
Andreas Verch Harald Hahn Eberhard Krause Helmut Cölfen Hans G Börner

Self-assembled peptide-polymer nanotapes of poly(ethylene oxide)-peptide conjugates are modified by a simple amine-azide transfer to create azide-containing nanofibres, which provide a platform for modular functionalization as demonstrated by the introduction of different carboxyl bearing entities to modulate the calcium binding properties of the nanotapes.

2013
Jose M. González-Domínguez Ana M. Díez-Pascual Alejandro Ansón-Casaos Marian A. Gómez-Fatou M. Teresa Martínez

Functionalization of single-walled carbon nanotubes (SWNTs) with covalently grafted amine moieties provides reactive fillers with potential covalent anchoring to an epoxy matrix. Manufacturing and characterization of a high performance epoxy system reinforced with as-grown and aminated SWNTs are presented through four different approaches. Epoxy composite materials incorporating SWNTs aminated ...

2014
Daniel Hack Charles C. J. Loh Jan M. Hartmann Gerhard Raabe Dieter Enders

The combination of cinchona-alkaloid-derived primary amine and Au(I) -phosphine catalysts allowed the selective C-H functionalization of two adjacent carbon atoms of pyrroles under mild reaction conditions. This sequential dual activation provides seven-membered-ring-annulated pyrrole derivatives in excellent yields and enantioselectivities.

Journal: :Macromolecules 2007
Jinqi Xu Guorong Sun Raffaella Rossin Aviv Hagooly Zicheng Li Ken-Ichi Fukukawa Benjamin W Messmore Dennis A Moore Michael J Welch Craig J Hawker Karen L Wooley

Radiolabeling studies were employed to investigate the influence of structure on the efficiency of surface functionalization for poly(acrylic acid)-coated shell crosslinked nanoparticles (SCKs) with two types of amine-terminated DOTA chelators. An intricate interplay between the chemical and physical properties of both the DOTA derivative and the SCK nanostructures was revealed, demonstrating t...

Journal: :Dalton transactions 2016
A Beloqui Redondo M Ranocchiari J A van Bokhoven

The deposition of gold on silica tends to give large particles when using conventional techniques. We report the preparation of 0.8 ± 0.2 nm particles on a modified SBA-15 support. The method involves the functionalization of silica with amine groups and deposition of gold at basic pH. These catalysts are highly active and selective in the dehydrogenation of formic acid.

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید