Evidence for covalent bonding of aryl groups to MnO2 nanorods from diazonium-based grafting.
نویسندگان
چکیده
We show here that the surface of MnO2 nanorods can be modified with aryl groups by grafting from aqueous and non-aqueous solutions of aryldiazonium salts. X-ray photoelectron spectroscopy provides direct evidence for covalent bonding of aryl groups to MnO2 through surface oxygens.
منابع مشابه
Covalent Grafting of Organic Molecules onto Activated Carbon by a Single Step
Activated carbon appended with organic groups was obtained by a grafting technique using a one-step reaction with diazonium salts. Using the organic aryl amines of 4-bromo aniline and 4-aminoantipyrine as precursors for the corresponding functional diazonium reagents, the bromobenzene and antipyrine molecules were bonded to the surface of carbon. The modified activated carbon was characterized ...
متن کاملSelective trioxolane based bifunctional molecular linkers for covalent heme surface functionalisation.
A bifunctional molecular linker containing both aryl diazonium and trioxolane groups was synthesised and its ability to sequentially functionalise glassy carbon and covalently immobilise heme investigated. Functionalisation was demonstrated by electrochemical techniques.
متن کاملEngineering Nanocarbon Interfaces for Electron Transfer
Electron transfer events involving single-walled carbon nanotubes (SWCNTs) play an integral role in a variety of applications, ranging from nanotube covalent functionalization to SWCNT-based photovoltaics. In the first part of this thesis, we explore ground-state electron transfer events, during the diazonium derivatization of carbon nanotubes, with the objective of modulating the extent of cov...
متن کاملThèse de doctorat de l ’ École Polytechnique
In this work, three surface functionalization processes have been studied: the spontaneous grafting fromdiazonium salts, the chemically induced grafting from diazonium salts and the chemically induced graftingfrom diazonium salts in presence of vinylic monomers (which is Graftfast). These processes work at roomtemperature, atmospheric pressure, in aqueous medium and without any ext...
متن کاملAryl Diazonium Chemistry for the Surface Functionalization of Glassy Biosensors.
Nanostring resonator and fiber-optics-based biosensors are of interest as they offer high sensitivity, real-time measurements and the ability to integrate with electronics. However, these devices are somewhat impaired by issues related to surface modification. Both nanostring resonators and photonic sensors employ glassy materials, which are incompatible with electrochemistry. A surface chemist...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Chemical communications
دوره 50 89 شماره
صفحات -
تاریخ انتشار 2014