A solution-processable benzothiazole-substituted formazanate zinc(II) complex designed for a robust resistive memory device.

A novel mononuclear bis(formazanate)zinc complex (1) based on a redox-active 1-(benzothiazol-2-yl)-5-(2-benzoyl-4-chlorophenyl)-3-phenyl formazan ligand has been synthesized and characterized. Complex 1 was prepared by reacting one equivalent of Zn(OCOCH)·2HO with two equivalents of the corresponding formazan derivative. X-ray crystallography was employed to ascertain the solid-state structure of compound 1, and the analysis revealed a distorted octahedral geometry for the complex where the symmetrical ligands exhibit a preference for coordinating with the zinc center in the 'open' form, generating five-membered chelate rings.

Design and synthesis of a solution-processed redox-active bis(formazanate) zinc complex for resistive switching applications.

In this paper, we report the synthesis and characterization of a mononuclear zinc complex (1) containing a redox-active bis(4-antipyrinyl) derivative of the 3-cyanoformazanate ligand. Complex 1 was readily obtained by refluxing zinc acetate with 3-cyano-1,5-(4-antipyrinyl)formazan (LH) in a methanolic solution. Single-crystal X-ray diffraction analysis of complex 1 shows that the formazanate ligands bind to the zinc center in a five-member chelate "open" form the 1- and 4-positions of the 1,2,4,5-tetraazapentadienyl formazanate backbone leading to the formation of the mononuclear bis(formazanate) zinc complex exhibiting a distorted octahedral geometry.

Decomposable Flexible Organic Transistors with a Cellulose-Based Gate Dielectric and Substrate for Biodegradable Electronics.

In this work, decomposable and combustible flexible organic transistors with a cellulose-based dielectric and substrate were demonstrated in an effort to produce biodegradable systems for eco-sustainable electronics. High- cyanoethyl cellulose (CEC) was explored as a suitable gate dielectric candidate for enhancing the biodegradability of flexible devices fabricated on a paper substrate. The fabricated flexible biodegradable transistors exhibited high performance for -5 V operation with excellent saturation in the output characteristics along with remarkable environmental, operational, electromechanical, and thermal stability.

Cytokinin biosynthesis in cyanobacteria: Insights for crop improvement.

Cytokinins, a type of phytohormones that induce division of cytoplasm, have considerable value in agriculture due to their influences on several physiological processes of plants such as morphogenesis, development of chloroplast, seed dormancy, leaf senescence, etc. Previously, it was assumed that plants obtain cytokinin from the soil produced by microbes as these hormones were first discovered in soil-inhabiting bacteria i.e.

Anti-enterococcal and anti-oxidative potential of a thermophilic cyanobacterium, sp. HNBGU 003.

Enterococci, the opportunistic pathogens, pose several serious and life-threatening infections such as urinary tract infections, sepsis, and endocarditis. The situation is worsening due to the development of drug resistance in these pathogens against several antibiotics. The addition of anti-enterococcal compounds with antioxidant activity in fermented and packaged food may help prevent the transmission of food-borne enterococcal infections.

Solution-Processed Organic Field-Effect Transistors with High Performance and Stability on Paper Substrates.

High-performance operationally stable organic field-effect transistors were successfully fabricated on a PowerCoat HD 230 paper substrate with a TIPS-pentacene:polystyrene blend as the active layer and poly(4-vinylphenol)/HfO as the hybrid gate dielectric. The fabricated devices exhibited excellent p-channel characteristics with a maximum and av field effect mobility of 0.44 and 0.

Directional Solvent Vapor Annealing for Crystal Alignment in Solution-Processed Organic Semiconductors.

A unified approach of directional solvent vapor annealing for crystal alignment in solution-processed organic semiconductors is proposed. Highly crystalline molecular self-assembly of the drop-cast technique is further enhanced by postprocessing scheme of the solvent vapor annealing with additional benefit of alignment of the crystalline domains. In this technique, a mixture of carrier gas and solvent vapors are made to flow in a certain direction and in the close proximity of the surface of the substrates carrying the solution.

Aeruginosins from a Microcystis sp. bloom material collected in Varanasi, India.

Two novel biologically active short peptides, aeruginosins IN608 and IN652, were isolated from the cyanobacterium Microcystis sp. strain BHU006, which was collected from Durgakund water reservoir in Varanasi, India. Aeruginosins IN608 and IN652 are linear modified peptides containing four building blocks, one of which is the arogenate-derived modified amino acid 2-carboxy-6-hydroxyoctahydroindole.

Cyanobacteria: an emerging source for drug discovery.

The c group of Gram-negative gliding bacteria, has a long history of cosmopolitan occurrence. It has great biodiversity despite the absence of sexual reproduction. This wide biodiversity may be reflected in the wide spectrum of its secondary metabolites.