An Fe3O4-graphene oxide nanocomposite has been synthesized via a chemical reaction with a magnetite particle size of 18-25 nm. The resulting nanocomposite can be easily manipulated by an external magnetic field, exhibits excellent catalytic activity and may be reused for several cycles with marginal loss of activity. This recyclable nanocomposite provides an efficient, economic, novel route for multi-component A(3) coupling reactions of aldehydes, amines and alkynes and gives the propargylamine in excellent yields.
Graphene‐like carbon nano‐sheets are prepared from dextrin, with cetyltrimethyl ammonium bromide (CTAB) as stabiliser, by the action of concentrated sulfuric acid. Oxidation of such sheets produce graphene oxide (GO) like material. These are characterized in the usual manner and their photophysical properties are explored. Binding of certain drug molecules with carbon nano‐sheet is investigated fluorimetrically. Finally, action of carbon nano‐sheets on normal and cancer cell lines revealed that the sheets have no effect on normal cells, but induce apoptosis on cancer cells. Also, these carbon nano‐sheets behave very similar to reduced graphene oxide platelets.
By the analytical gravimetric technique,
the equilibrium saturated
solubilities of l-serine and l-isoleucine in aqueous
solutions of sodium nitrate (NaNO3) and potassium nitrate (KNO3) were measured at six different temperatures
in the range of 288.15 to 313.15 K. The theoretical studies on the
standard transfer Gibbs free energies were performed with the help
of experimental solubility data. The molar volume, transfer enthalpy
of cavity, transfer Gibbs free energy, and dipole–dipole interactions
were also measured to explore complete thermodynamical aspects of
these molecules in aqueous electrolytes. In addition, the solute–solute,
solute–solvent, and solvent–solvent interactions in
terms of transfer Gibbs energies due to chemical interactions and
transfer entropy for the present amino acids (AA’S) were calculated
by deducting the cavity interaction and dipole–dipole interaction
from the total transfer Gibbs free energy (ΔG
t
0(i)) and transfer entropies (TΔS
t
0(i)). Finally, the stability owing to the chemical
nature of the amino acids in aqueous electrolytic solutions is explained
by introducing the abovementioned thermodynamical parameters.
The plasma-enhanced chemical vapor deposition (PECVD) technique has been utilized for the facile surface deposition of hydrogenated diamond-like carbon (HDLC) thin-films onto Si(100) substrates.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.