This paper describes synthesis and characteristics of functional poly(ester-anhydride)s bearing allyl pendant groups. The polymers were obtained by polycondensation of 1,6-bis-p-carboxyphenoxyhexane (CPH) and oligo(3-allyloxy-1,2-propylene succinate) terminated with carboxyl groups (OSAGE). The ...

Bulk polymerization of novel allyl(p-allylcarbonate) benzoate was investigated using different sources of energy, such as gamma rays, ultraviolet rays as well as thermal polymerization. The poly(allyl(p-allylcarbonate) benzoate) obtained is a cross-linking, transparent, thermoset polycarbonate. ...

Amaranth is regarded as a new “super-vegetable” in western countries, albeit it is consumed for centuries in Africa and Asia. In addition to common carotenoids, flavonoids and polyphenols, caffeoylisocitric acid has been described as amaranth type-specific secondary metabolite. Remarkably, not...

The lithium salts of the conjugated bases of 4-methoxy- and 4-acetylamino-2(1H)-pyrimidinones 1–3 undergo highly chemoselective N1-methylation or ethylation when treated with methyl- or ethylsulfate (hard electrophiles) in dry dioxane, while the use of DMF as solvent results in competitive O2-a...

We determined the standard molar enthalpies of formation in gas-phase, at T = 298.15 K, of the methyl 2-, 3-, and 4-hydroxybenzoates, through static bomb combustion calorimetry and thermogravimetry. The enthalpies of formation in gas phase were derived from experimental combustion energies and p...

The preparation of iodo acid [closo-1-CB9H8-1-COOH-10-I]− (1) is optimized and scaled from 1 to 40 g of B10H14. The improved preparation of the [arachno-6-CB9H13-6-COOH]− (5) uses four times smaller volume and can be run conveniently in up to 40 g scale in a 3-L vessel. The optimized oxidation o...

Keggin tungstophosphoric acid (H3PW12O40, HPW) was immobilized onto Santa Barbara Amorphous (SBA-15) type silica to obtain selective catalysts for the resorcinol tert-butylation with methyl-tert-butyl ether. The challenge was to enhance the reaction selectivity to the mono-alkylated product i.e....

The title reaction initially produced a mixture of three cyclic oligomers, calix[n]resorcinarenes (n= 4, 5, 6), as the major products. Under the conditions of their formation, the pentamer rapidly isomerized to the tetramer and the hexamer, while the hexamer slowly isomerized to the tetramer. A ...

Current study presents vapour pressure curves and from these derived normal boiling points and heats of vaporisations at normal boiling points for three alkylresorcinols: 2-n-propylresorcinol, 4-ethylresorcinol, 4-hexylresorcinol. Measurements were made near their boiling points, i.e. bracketing...

An effective method to functionalize chitosan with 4-hexyloxyphenol (HP) under homogeneous reaction conditions was developed using laccase as the catalyst. The resulting copolymer was characterized for chemical structure, grafted-HP content, surface morphology, thermal stability, antioxidant cap...

Magnetic nanoparticles modified with the ionic liquid were prepared. The kinetics, adsorption isotherms, thermodynamics and spectroscopic analyses of the removal of the reactive yellow 15 by ultrasound assisted adsorption onto magnetic nanoparticles were investigated. Several variables affecting...

The commercially available Fe0 aggregate has advantages of low-cost, fast-effective decontamination, reusability, and ease of operation. However, little study has been done on the performance of Fe0 aggregate as a catalyst in degradation of azo dyes, particularly used in persulfate (PS) oxidatio...

The decolourisations of reactive azo dye, Reactive Yellow 14 (RY14), by three different advanced oxidation processes have been investigated. The dye is effectively decolourised by all these processes. The effects of dye adsorption, catalyst loading and dye concentration on the UV/TiO2 process ha...

The importance of removal of Toxic dyes from drinking water has received significant attention of researchers and decision makers across the globe. Adsorption potential of Rice husk (RH) and NaOH treated Rice husk (SHRH) for the removal of Reactive Yellow (RY) dye from aqueous solution by batch ...

In this research, MnOx- CeO2 synthesized via green method and was applied as adsorbent to remove of Reactive yellow 145 dye from aqueous solutions. Prepared MnOx- CeO2 was characterized by XRD (X-ray diffraction), XRF (X-ray fluorescence), FESEM (Field emission scanning electron microscopy), EDX...

The aqueous degradation of Reactive Yellow 84 (RY84) by potassium peroxydisulfate (K2S2O8) has been studied in laboratory scale experiments. The effect of the initial concentrations of potassium peroxydisulfate and RY84, pH and temperature on RY84 degradation were also examined. Experimental dat...

The photocatalytic decolourisation and degradation of an azo dye Reactive Yellow 14 (RY14) in aqueous solution with TiO2-P25 (Degussa) as photocatalyst in slurry form have been investigated using solar light. The study on the effect of various photocatalysts on the decolourisation and degradatio...

This paper evaluates the decolourisation of an azo dye Reactive Yellow 14 (RY14) by three advanced oxidation processes viz., solar/TiO2, solar/H2O2 and solar/H2O2/Fe2+ (photo-Fenton). The results showed that all the three processes could be effectively used for the decolourisation. The study on ...

The photocatalytic decolourisation and degradation of an azo dye Reactive Yellow (RY14) in aqueous solution with TiO2 as photocatalyst in slurry form has been carried out using UV-A radiation (365 nm). The effect of various parameters such as catalyst loading, radiation intensity and initial dye...

Glycosized porphyrins are promising compounds for using in PDT, since they combine the ability to act as a photosensitizer, and their saccharide residues provide an increased tumorotropicity of this compound in the affected cells. In this work, the modified 5,10,15,20-tetrakis [4-(2,3,4,6-tetra-...