We report an electrical-field switched color device using a polymer-stabilized blue-phase (PSBP) liquid crystal in which the Bragg-reflected color of the blue phase (BP) can be switched to reflect a second color. The phase-separated three-dimensional polymer network transcribes the cubic structure of a BP liquid crystal and restrains the deformation of cubic lattice by the external electric fie...

The synthesis and use of metal nanoparticles have gained consideration due to their unique electrical, optical, catalytic and magnetic properties [1-5] which are different from bulk materials. In recent times, synthesis of inorganic nanoparticles has been demonstrated by many chemical and physical methods. But the importance of biological synthesis is being realized globally as chemical methods...

Enaminone 1 was reacted with hydrazonoyl halides 2a-d to yield 3,4-disubstituted pyrazoles 6a-d. Coupling with arenediazonium chlorides afforded the 2-(arylhydrazono)-3-(1-naphthalenyl)-3-oxopropionaldehydes 13a-c. Compounds 13 could be utilized for the synthesis of a variety of arylpyrazoles, arylazolopyrimidines, and pyridazinones via reaction with hydrazines, aminoazoles, and active methylen...

A very ecofriendly, highly active and reusable mesostructured ZnAlMCM-41(75) catalyst used in the Prins cyclization of olefins has unprecedented catalytic activity among other microporous mesoporous catalysts.

a series of tri- and tetra- substituted imidazoles were synthesized from benzyl, aldehyde and ammonium acetate in the presence of zeolite as an ecofriendly reusable catalyst under microwave irradiation in the absence of solvent. the yields are high to excellent and the use of microwave irradiation reduces reaction times to few minute.

Heavy metal contamination due to natural and anthropogenic sources is a global environmental concern. Release of heavy metal without proper treatment poses a significant threat to public health because of its persistence, biomagnification and accumulation in food chain. Non-biodegradability and sludge production are the two major constraints of metal treatment. Microbial metal bioremediation is...

Microbial silver nanoparticles have been known to have bactericidal effects but the antimicrobial mechanism have not been clearly revealed. The use of microorganisms in the synthesis of nanoparticles emerges as an ecofriendly and exciting approach. In this study biosynthesis of silver nanoparticles using Pleurotus sajor caju fungi and its antimicrobial studies has been reported. The extra cellu...

The oxidation of 2-Methylnaphthalene (2-MN) was carried out in actic acid with 30%H2O2. 2-Methyl-1,4Naphthoquinone (2-MNQ) was obtained in a yield of 81.3% when sulfric acid used as catalyst. The aromatic substituted pathway is speculated as the dominated oxidation pathway with a higher conversion than the epoxidation one due to the activity of CH3CO3H2 + formed by actic acid and H+ supplied fr...

A simple and inexpensive, single step synthesis of silver nanoparticles was achieved using sodium citrate both as a reducing and capping agent. Silver nanoparticles were synthesized by injecting sodium citrate solution into the solution of silver nitrate at high temperature. The synthetic process was carried out in aqueous solution, making the method versatile and ecofriendly. The synthesized s...

BACKGROUND Curcumin and vanillin are the two useful compounds in food and medicine. Bismuth nitrate pentahydrate is an economical and ecofriendly reagent. METHOD Bismuth nitrate pentahydrate impregnated montmorillonite KSF clay and curcumin were subjected to microwave irradiation. RESULTS Microwave-induced bismuth nitrate-promoted synthesis of vanillin from curcumin has been accomplished in...