Acrylonitrile (AN) and 1-vinyl imidazole (VI) based hydrogel was prepared in bulk (macro) dimensions via redox polymerization technique. Afterward, this quaternized (positively charged) exposed to the amidoximation reaction. The hydrogels (quart-p(AN-co-VI), amid-p(AN-co-VI) p(VI)) characterized using fourier transform infrared spectroscopy (FT-IR) thermal gravimetric analysis (TGA). Swelling e...

Coagulation-flocculation is a critical treatment to reduce operational problems at Drinking Water Treatment Plants (DWTPs), created by episodes of cyanobacterial blooms in surface waters. There need for the search good coaguflocculants that avoid release intracellular toxins safer sustainable production. Clay-polymer interactions were examined development efficient composites their use as Micro...

Introduction The discovery that complex chiral diacetylene derivatives can self-assemble into nanostructures 1 has led to a search for simpler molecules that retain that activity. The search for novel materials is complicated because the factors governing self-assembly are complex and until the simple system is identified the underlying mechanisms are difficult to discover. Unlike spherical lip...

Quaternary trimethyl chitosan-stabilized bismuth nanoparticles (QTMC-BiNPs) with positive surface charges were uniquely synthesized and fully characterized. In the synthesis, Trimethyl Chitosan (QTMC), a water-soluble derivative of chitosan (CTS) was prepared using two-step reductive methylation. The new biopolymeric functionalized ligand further used as capping agent for synthesis QTMC-BiNPs w...

Tropane alkaloids have received much attention because many of them reveal remarkable biological activity (1-5). Compounds with tropinone structure or related 8-azabicyclo[3.2.1]octane skeletons have attracted considerable attention in medicinal chemistry because of their influence on neurotransmitters. They are of interest as analogues of cocaine and other physiologically active compounds and ...

Solid alkaline fuel cell is employed by polymer anion exchange membrane (AEM) that is permeable to hydroxide ion. A number of polymers have been proposed for AEM which include polysulfone (PSF), poly (phenylene oxide) (PPO), and poly (ether ether ketone) (PEEK). The purpose of this paper was to conduct a critical review on the development of PEEK polymer as AEM, particu...

New developments from our laboratories in Directed ortho (DoM) and remote (DreM) metalation reactions are presented and connections to transition metal catalyzed cross coupling and ole®n metathesis processes are described. As it heads into its seventh decade since the Gilman and Wittig discovery, the Directed ortho metalation (DoM) reaction (Scheme 1) [1] is increasingly poised to the challenge...

Introduction. How to understand the lubrication of animal joints? In seeking to dissect this complex problem into manageable components, it is interesting to consider hyaluronic acid (HA), more currently called hyaluron, a linear polysaccharide with the repeat unit of the disaccharide D-glucoronic acid and N-acetyl-Dglucosamine (see Figure 1a), which exists ubiquitously in most organisms with h...