It is common knowledge that the ocular bioavailability and therapeutic response of drugs applied topically as eye drops is very poor, this is due to rapid precorneal drainage of the instilled dose, which could be overcome by the use of in-situ gelling systems that undergo a sol-gel transition in the cul-de-sac. This work describes the ophthalmic formulation of an antibacterial agent ofloxacin, ...

Heteropoly acid promoted nanoparticle of nickel oxide samples were prepared by sol-gel method using heteropoly acids. Prepared composite was characterized by XRD, FT-IR and ICP technique. In this work, we have reported bromination of phenol, its derivatives and some aromatic compounds. The liquid phase bromination of phenol was Performed using heteropoly acids immobilized nanoparticle of nickel...

A novel solvothermal-induced self-assembly approach, using colloid sol as precursor, is developed to construct monolithic 3D metal oxide/GS (graphene sheets) aerogels. During the solvothermal process, graphene oxide (GO) is highly reduced to GS and self-assembles into 3D macroscopic hydrogels, accompanying with in situ transformation of colloid sol to metal oxides. As a proof of concept, Fe2 O3...

Fabrication of monodisperse pure silica and core-shell nanospheres (Fe2O3@SiO2 and Fe2O3/QD@SiO2) was done in straight forward one-pot method combining sol-gel chemistry and supercritical fluids. For the core-shell materials, preformed nanoparticles stabilized in hexane were dispersed in a sol containing a silicon alkoxide, water and acetone as the solvent. The precursor solution was introduced...

A chitosan derivative which has a structure that approximates N-phthaloyl-3,6-di-Oacetylchitosan (AcPhCh) was used to investigate the thermal behavior of lyotropic gel liquid crystalline phases in dimethylsulfoxide (DMSO). A distinct gel-sol transition in addition to a liquid crystal-liquid (or chiral nematic-isotropic) transition was observed in the AcPhCh-DMSO system by differential scanning ...

This investigation proposes the use of sol-enhanced electrodeposition to create a range Co−Ni−TiO2 films. The addition TiO2 sol controls nucleation process and properties composite films by generating nanoparticles in situ process. transmission electron microscopy (TEM) zeta potential analyses revealed relatively homogenous distribution with particle size below 100 nm for produced. Microstructu...