نتایج جستجو برای: functionalize

تعداد نتایج: 592  

Journal: :The International Conference on Applied Mechanics and Mechanical Engineering 2012

2015
Khac Minh Huy Nguyen Martine Largeron

Aerobic oxidative CH functionalization of primary aliphatic amines has been accomplished with a biomimetic cooperative catalytic system to furnish 1,2-disubstituted benzimidazoles that play an important role as drug discovery targets. This one-pot atom-economical multistep process, which proceeds under mild conditions, with ambient air and equimolar amounts of each coupling partner, constitute...

Journal: :Chemical communications 2012
Yuhui Jin Fangmao Ye Changfeng Wu Yang-Hsiang Chan Daniel T Chiu

We describe a facile method to functionalize semiconducting polymer dots (Pdots) with polyelectrolytes. The polyelectrolyte coating dramatically improves the colloidal stability of the Pdots in solutions which are either of high ionic strength or contain bivalent metal ions: this feature allows Pdots to be used under physiologically relevant environments without losing their functionality. We c...

2015
Christopher J Teskey Andrew Y W Lui Michael F Greaney

The first example of a transition-metal-catalyzed, meta-selective C-H bromination procedure is reported. In the presence of catalytic [{Ru(p-cymene)Cl2 }2 ], tetrabutylammonium tribromide can be used to functionalize the meta C-H bond of 2-phenylpyridine derivatives, thus affording difficult to access products which are highly predisposed to further derivatization. We demonstrate this utility w...

Journal: :Nano letters 2006
Damon B Farmer Roy G Gordon

Alternating exposures of nitrogen dioxide gas and trimethylaluminum vapor are shown to functionalize the surfaces of single-walled carbon nanotubes with a self-limited monolayer. Functionalized nanotube surfaces are susceptible to atomic layer deposition of continuous, radially isotropic material. This allows for the creation of coaxial nanotube structures of multiple materials with precisely c...

Journal: :Angewandte Chemie 2013
Yifan Li Jonathan P Brand Jérôme Waser

Furans are omnipresent in synthetic bioactive compounds, natural products and innovative organic materials (Figure 1). They also give access to equally important tetrahydrofurans via reduction or dihydropyrans via oxidation. It is consequently not surprising that the development of new methods to synthesize and functionalize furans is an area of intense research in modern organic chemistry. In ...

Journal: :Chemical communications 2011
David C Kennedy Craig S McKay Li-lin Tay Yanouchka Rouleau John P Pezacki

Silver nanoparticles bonded to terminal alkynes form stable particles in aqueous solution, produce strong SERS signals for molecular imaging that arise from the carbon-metal bond, and expand the scope of molecules that can be used to stably functionalize plasmonic particles for mammalian cell imaging applications. β-Lactams represent a class of biologically important molecules that can be adapt...

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