Chemistry - Sciene

EELLEECCTTRROONNIICC SSPPEECCTTRROOSSCCOOPPYY OOFF SSOOMMEE TTRRAANNSSIITTIIOONN MMEETTAALL IIOONN CCOOMMPPOOUUNNDDSS IINN AA NNEEWW IIOONNIICC LLIIQQUUIID

The behavior of some transition metal cations [Cr (III), Fe (III), Fe (II), Co (II), Ni (II) and Cu (II)] were investigated in ammonium alum-urea ionic liquid. The study was followed by UV-Visible electronic spectroscopy to establish their coordination geometry in the liquid and estimate the ionic species attached to the transition metal cations. The reactivity of the metal cations were found to vary from one to another. Chromium (III) cation was found, (as expected) to be in octahedral geometry with ionic liquid species and was inert toward the addition of ligands.

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Effect of carbon nanotube on physical properties of the nematic liquid crystal N-(4`-methoxybenzylidene) - 4-nbutylaniline (MBBA

Abstract:

In this work the nematic liquid crystal (NLC) N-(4`-methoxybenzylidene)-4-n-butylaniline (MBBA) with transition temperature range between (22oC - 42℃) was prepared and identified using FTIR and 1H NMR spectroscopy. The liquid crystalline behavior was examined by means of hot-stage polarizing microscopy to determine the phase transition temperatures and the type of mesophases. The prepared compound MBBA was doped with different concentrations of multi wall carbon nanotube in order to study the electric

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