Mesoporous silica functionalized with a 2-hydroxy-naphthyl moiety has been synthesized and characterized by standard techniques like powder X-ray diffraction, N2 adsorption/desorption studies, transmission electron microscopy and spectral studies like FT-IR, UV-visible, fluorescence and 13C and 29Si solid state NMR. The functionalized silica material showed significant enhancement in its emissi...

As an unnecessary element for human body, aluminum can cause a variety of diseases when ingested in excess, so it is great significance Al3+ detection. A new rhodamine probe with excellent photochromic properties based on Al3+- induced ring-opening mechanism the spirolactam was proposed. Upon binding Al3+, generated 1:1 P1-Al3+ complex, confirmed by Job’s plot titrations analysis. Could exhibit...

Resumo Materiais baseados em oxi-hidróxidos mistos de alumínio e ferro (III) foram preparados pela síntese hidrotérmica a partir da ureia, sais nitrato ou cloreto diferentes razões molares Al3+:Fe3+. Foram avaliadas as propriedades estruturais, morfológicas térmicas dos materiais. As misturas nitratos Al3+ Fe3+ conduziram à formação hematita enquanto que nos materiais obtidos cloretos, fases cr...

A new live-cell permeable, fluorescent probe comprised of a simple salicylimine-based Schiff base (SA1) has been developed for Al3+ with nano-molar sensitivity in aqueous media. SA1 was synthesized through a simple structural modification of a recently reported receptor SA2 by the incorporation of the N,Ndiethylamino (DEA) group as a fine controllable unit. This modification affects the perform...

al3+-potentiometric sensor, based on (2z) -methyl 2- ((z) (p-tolylimino)-3-ethyl -4-oxothiazolidin -5- ylidene) acetate (mteoy) as a neutral ionophore, was successfully developed for the detectionof al3+ in aqueous solutions. the electrode responds to al3+ ion with a sensitivity of 19.8 ± 0.1 mv/decade over the range 1.0 x 10-8- 1.0 x 10-1 mol lt' and in a ph range of 3.0-9.0. the electrodeshow...

The complexation of five recently synthesized hydroxy-thioxanthone derivatives with Al3+ ion was studied in a methanol solution spectrophotometrically, and the stepwise formation constants of the resulting 1:1 and 2:1 (ligand-to-metal) complexes were evaluated. The suitability of the thioxanthone derivatives as neutral ionophores for the preparation of a new Al3+ ion-selective PVC-membrane elec...

Methane emission was inhibited by aluminium ion in paddy fields. Addition of Al3+ (20 mM) to the culture medium containing cells of pure Methanosarcina barkeri, inhibited methanogenesis. Methanogenic co-factor, F-420, was isolated and purified from Methanosarcina barkeri MS. Spectrophotometric and spectrofluorometric analysis of interaction between co-factor, F-420, and Al3+ revealed that they ...

conclusions: the results of the present study indicated that oral preparation of cm with an acceptable taste is feasible. background: chlorpheniramine maleate (cm) is widely used as an antihistaminic drug but it is very bitter and as yet no mouth dissolving/disintegrating taste-masked preparation that might be useful for pediatric and geriatric patients is available in the market. objectives: t...