4-(4'-Butoxyphenyl)phenyl-beta-O-D-glucoside was synthesized as a low-molecular-mass gelator. It was able to immobilize a variety of aqueous and organic solvents in large amounts through the formation of three-dimensional self-assembled fibrillar networks. The morphologies of the aggregates depended on the nature of solvent where they were formed. Planar ribbons were observed in water, while he...

Synthetic receptors for phosphates and phosphonates have been generated in SiO2 xerogels via a surface molecular imprinting method. The monomer 3-trimethoxy silylpropyl-1-guanidinium chloride (1) was developed to prepare receptor sites capable of binding with substrates through a combination of ionic and hydrogen bond interactions. HPLC studies and adsorption isotherms performed in water have f...

Hydrogen peroxide was encapsulated into a silica xerogel matrix by the sol-gel technique. The composite was tested as an oxidizing agent both under conventional and microwave conditions in a few model reactions: Noyori's method of octanal and 2-octanol oxidation and cycloctene epoxidation in a 1,1,1-trifluoroethanol/Na2WO4 system. The results were compared with yields obtained for reactions wit...

This article analyses experiments on the kinetics of internal electrochromism thin (micron) films hydrated vanadium pentoxide xerogel with point contacts. It describes a cylindrical model electrochromic colouration, which was used to evaluate concentration colour centres in initial film and after additional hydrogenation this by plasmaimmersion ion implantation.When we compared calculated value...

Penetian ini bertujuan untuk mengetahui pengaruh kristalinitas terhadap stabilitas termal komposit termoplastis dengan pengisis silika xerogel. Polimer yang digunakan adalah polietilena glikol (PEG 4000) merupakan polimer termoplastis. Silika xerogel diekstraksi melalui proses alkali fusion . didapatkan menunjukkan fasa amorf X-Ray Diffraction (XRD). ditambahakan ke dalam PEG 4000 komposisi ber...

A new silver(I) complex with 1-phenyl-3-(quinolin-5-yl)urea has been prepared, acting as a supramolecular supergelator in the presence of polar solvents. In open vials temperature dependent, reversible gel-to-xerogel transition is observed, while in sealed vials direct crystallization of four polymorphs of the same gelling compound is achieved, depending on the gelling solvent.

A method of fabricating sol-gel quantum dot (QD) films is demonstrated, and their optical, structural and electrical properties are evaluated. The CdSe(ZnS) xerogel films remain quantum confined, yet are highly conductive (10(-3) S cm(-1)). This approach provides a pathway for the exploitation of QD gels in optoelectronic applications.

A novel route has been developed to fabricate different carbon nanostructures having individual morphology of carbon nanoparticles: nanofullerene, nanocube, nanoleaf and porous nanorods, through the combustion of carbon xerogel with nitric acid. These fabricated nanostructures exhibited bright green fluorescence under the exposure of UV light.

Sol-gel synthesis of silica employing the co-precursor trimethylchlorosilane (TMCS) and precursor tetraethylorthosilicate (TEOS) was accomplished. The purpose this investigation to ascertain how pH affected properties synthetic silica. synthesized hydrophobic characterized using FTIR, TGA, GSA determine effect adjustment on functional group characters, thermal properties, pore morphology. ratio...

RESUMO O desenvolvimento de novos compósitos oxalato zinco (ZnC2O4)/xerogel carbono para aplicações fotocatalíticas foi avaliado. uso do xerogel é justificado por sua alta condutividade, que facilita a separação cargas geradas na estrutura zinco. A eficiência fotocatalítica dos materiais avaliada pela decomposição azul metileno. Os foram produzidos dispersão em gel carbono, durante policondensa...