A series of triple-color hyperbranched polymers based on poly(9,9-dioctylfluorene) (PF) were designed and synthesized, in which phosphorescent tris(1-phenylisoquinoline)iridium(Ш) (Ir(piq)3) acts as red core and poly[(9,9-dioctylfluorene-2,7-diyl)-alt-(benzo[2,1,3]thiadiazol-4,7-diyl)] (PFBT) i...

A series of saturated-red emitting iridium complexes with bifunctional charge-transporting peripheral groups were designed and synthesized. The relationship between the structures and their photophysical, electrochemical and electrophosphorescent properties was investigated. Through the incorpor...

Geometries, enthalpies and energy barriers for tautomerization of X–benzene sulfides (X–B) to their corresponding X–thiepins (X–T), as well as thiepins ring inversions, are calculated at HF, MP2, and B3LYP levels of theory, using 6-311G∗ basis set (X = F, Cl, Br, CH3, OCH3, CF3, CN and NH2)....

The high resolution proton magnetic resonance spectrum of thiepin 1,1-dioxide has been recorded and completely analyzed in terms of chemical shifts and coupling constants. The NMR spectral parameters are discussed in relation to the geometry of the molecule. The experimental results indicate tha...

The net charges on various atoms of aldohexopyranose pentaacetates were computed by using the MO-LCAO method of Del Re for σ-charges and the Hückel MO method for π-charges. The potential and free energies of sixteen aldohexopyranose pentaacetates in the C1(D) and 1C(D) conformations were esti...

Permanganate and nitrilotriacetic acid (NTA) based dilute chemical formulations were evaluated for the dissolution of uranium dibutyl phosphate (U-DBP), a compound that deposits over the surfaces of nuclear reprocessing plants and waste storage tanks. A combination of an acidic, oxidizing treatm...

Dibutyl phthalate (DBP) is commonly used plasticizer and a known endocrine disruptor that can cause birth defects and developmental disorders. Although several studies have reported that DBP has neurotoxic effects on neurite outgrowth and on learning and memory, its neurotoxic effects on neural ...

Herein, we investigated the distribution of dibutyl phthalate (DBP) in the tissues of wheat grown on DBP-contaminated soils and determined the activity of detoxifying enzymes [cytochrome P450 (P450) and glutathione S-transferase (GST)] in these tissues at different growth stages of wheat. The co...

Nuclear fuel reprocessing facilities that use tributyl phosphate (TBP) and nitric acid tend to develop a sticky coating of uranium dibutyl phosphate (U-DBP) on their surfaces. This sticky coating also gets formed on the reprocessing waste storage tanks on long standing, which results in radiatio...

A simple and efficient approach leading to a well functionalized helically chiral π-conjugated system is reported. Optical resolution of racemic helicene has been well accomplished affording both enantiomers (+)- and (−)-4 in high optical purity and their chiroptical properties were experimenta...

Publisher SummaryThe importance of maintaining balanced pyrimidine nucleotide metabolism is evident because it has been shown that many biosynthetic pathways are dependent on pyrimidines. Pyrimidine nucleotides are also important for the continued biosynthesis of various macromolecules, such as ...

Herein, two orange-red emitters, 3,6-bis(9,9-dimethylacridin-10(9H)-yl)-9H-fluoren-9-one (DMAC-FO) and 3,6-di(10H-SP[acridine-9,9′-fluoren]-10-yl)-9H-fluoren-9-one (SPAC-FO), based on fluorenone have been designed and synthesized. As compared to the widely reported benzophenone acceptor, fluore...

Subcritical water extraction (SWE) is a green process that uses water as a solvent for extracting non-polar flavonoids by varying the temperature-dependent dielectric constant. Flavanones, including hesperidin and narirutin, constitute the majority of the flavonoids that occur naturally in citru...

Polyaniline/Activated carbon composite was synthesized using in-situ oxidative chemical polymerization technique. The optimized composite (POAC) was applied for the removal of methyl orange (MO) from aqueous solution. Several studies such as changing the concentration of MO solution, contact tim...

The flow-vacuum pyrolyses of cis-4b,5,9b,10-tetrahydroindeno[2,1-a]indene-5,10-diol (8) and cis-4b,5,9b,10-tetrahydroindeno[2,1-a]indene-5,10-dione (9) were studied by GC/MS at 1.33 mbar and 600–950 °C for 8 and 800–1050 °C for 9. The main reaction products of 8 were: diketone 9, 2-phenylind...

Acid-activated sepiolite nanofibers (ASep) were organically modified with (3-aminopropyl) triethoxysilane (APTES) to produce the amino-functionalized nanofibers (NH2-ASep). Due to the amino groups, highly dispersed silver nanoparticles (AgNPs) were assembled on the surface of NH2-ASep by a simpl...

Loading metal nanoparticles on the surface of nanosheet supports is an attractive approach to enhancing their catalytic performance. Herein, palladium nanoflowers (Pd NFs) were prepared on amino-functionalized fullerene (C60-NH2) by hydrothermal self-assembly using ethylenediamine (EA). Reductio...

Two novel ligands with 4′ substitution on the Phenyl Ring B of biphenylthiol, 5-chloro-2-(2′-((dimethylamino)methyl)-4′-iodophenylthio)benzenamine (7) and 2-(2′-((dimethylamino)methyl)-4′-methoxyphenylthio)-5-iodobenzenamine (8), were prepared and tested as potential serotonin transporter (...

Five copper complexes, [Cu(bhbb,chbb,nhbb)(H2O)n] (tridentate-ligands: H2bhbb = 2-(5-bromo-2-hydroxylbenzylideneamino)benzoic acid, 1; H2chbb = 2-(5-chloro-2-hydroxylbenzylideneamino)benzoic acid, 2; H2nhbb = 2-(5-nitro-2-hydroxyl-benzylideneamino)benzoic acid, 3) and [Cu(cpmp,npmp)2] (bidentate...

A facile, mild and efficient procedure for the synthesis of fully substituted pyrazolo[3,4-b]pyridin-5-amines is reported. A mixture of an α-azidochalcone, a 5-aminopyrazole and t-BuOK was stirred in DMF at ambient temperature for 5 min to afford the corresponding pyrazolo[3,4-b]pyridin-5-amine...