NMR Spectra of 2-p-Nitrophenylindenone

Proton and C-13 NMR spectral studies of 2-p-nitrophenylindenone indicate that some polarization is present in this compound which would explain its stability to the dimerization that is observed with 2-phenylindenone. Assignment of frequencies in these spectra was based on intensities of signal and comparison with the spectra of 2-p-nitrophenyl-3-phenyl-2-propenenitrile, 2,3-diphenylindenone and the sodium methoxide addition products of 2-p-nitrophenylindenone and 2-p-nitrophenyl-3-phenyl-2-propenenitrile

Solvolysis of 1,2-Epoxydodecane

The solvolysis of 1,2-epoxydodecane in formic acid followed by saponification gave mainly 1,2-dodecanediol and a small amount of the isomeric 2,2\u27-dihydroxydidodecyl ethers. No products from a coil effect were isolated. The structure of the ether was demonstrated by oxidation and synthesis. Assignment of configuration to the isomeric ethers was made on the basis of the infrared spectra

Aniline incorporated silica nanobubbles

We report the synthesis of stearate functionalized nanobubbles of SiO2 with a few aniline molecules inside, represented as C6H5NH2@SiO2@stearate, exhibiting fluorescence with red-shifted emission. Stearic acid functionalization allows the materials to be handled just as free molecules, for dissolution, precipitation, storage etc. The methodology adopted involves adsorption of aniline on the surface of gold nanoparticles with subsequent growth of a silica shell through monolayers, followed by the selective removal of the metal core either using sodium cyanide or by a new reaction involving halocarbons. The material is stable and can be stored for extended periods without loss of fluorescence. Spectroscopic and voltammetric properties of the system were studied in order to understand the interaction of aniline with the shell as well as the monolayer, whilst transmission electron microscopy has been used to study the silica shell