Nanocrystals prepared in organic media can be easily self-assembled into close-packed hexagonal monolayers on solvent evaporation for various applications. However, they usually rely on the use of organometallic precursors that are soluble in organic solvents. Herein we report a general protocol to transfer metal ions from an aqueous solution to an organic medium, which involves mixing the aque...

Polymer vesicles are being extensively studied to emulate self-assembly in biological systems and also use them in a variety of biological and industrial applications. This study demonstrates a novel strategy to prepare polymer vesicles in a pure aqueous medium by driving the micelle-to-vesicle transition with metallic nanoparticles. We synthesized poly(2-amino-2-hydroxyethyl aspartamide) (PAHA...

Ultraviolet irradiation of 5-ethylorotate in aqueous medium led to formation of 5-ethylidenehydroorotate via a 1,3-hydrogen rearrangement from the ethylene group of the 5-substituent to the ring C6. The same product was also obtained by an alternate pathway via a hitherto unidentified intermediate. The structure of this unusual pyrimidine analogue, established in the solid state by X-ray diffra...

Catalytic oxidation/degradation of phenol with molecular oxygen in aqueous medium by Zirconia, zirconia supported metals and metal oxides at low temperature were studied in a three necked batch reactor. The catalysts prepared were characterized by modern techniques like XRD, SEM and EDX. The activities of different catalysts for the oxidation of phenol in aqueous medium were found to be in the ...

A new series of compounds has been developed for the recognition of metal ions and it was found that the position of substituent in the organic compound proved to be the deciding factor for the development of a chemosensor. Reprecipitation method was used to develop organic nanoparticles (ONPs) in aqueous medium and the suspension of ONP in aqueous medium remained stable for one month. These ON...

INTRODUCTION A new method for preparation of silver nanoparticles (AgNPs) based on using hydrazino-isatin derivatives in an aqueous methanol reaction medium is reported here. AgNPs were prepared using silver nitrate solubilized in a water core as the source of silver ions and 3-hydrazino-isatin derivatives (3-hydrazino-isatin [IsH] and 1-benzyl-3-hydrazino-isatin [BIsH]) solubilized in methanol...

IF it is granted that the aqueous humour is formed by the active transfer of solutes and solvent from the plasma to the aqueous, it follows that the rates of transfer of the various solvent or solute species and the steady-state composition of the aqueous will depend upon the electrochemical potential difference (P.D.) across its boundaries with the plasma. Alterations of the electrochemical P....

In this paper, the photocatalytic (UV-A/TiO2) degradation of two steroid hormones: norethisterone and danazol in aqueous medium has been studied using immobilized titanium dioxide as photocatalyst. The photolytic degradation (degradation without photocatalyst) of the two hormones was also investigated. UV-A irradiation was provided by black light lamp 18 W. The photocatalytic and photolytic deg...

Eosin B (EoB) and eosin Y (EoY), two xanthene dye derivatives with photosensitizing ability were prepared in high purity through an improved synthetic route. The dyes were grafted to a 6-monoamino-β-cyclodextrin scaffold under mild reaction conditions through a stable amide linkage using the coupling agent 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride. The molecular conjuga...

The oxidative cleavage of aliphatic acetals of normal aliphatic aldehydes and substituted aliphatic aldehydes with aliphatic as well as aromatic alcohols with lead tetra acetate in acetic acid, aqueous acetic acid and in acetic acid-benzene medium is first order each in [oxidant] and [acetal] and yields the corresponding esters as the main product The rate of oxidation depends upon the dielectr...