The chemistry, electronic structure, and electron injection characteristics at interfaces formed between tris~8-hydroxy quinoline! aluminum (Alq3) and magnesium ~Mg! and aluminum ~Al! are studied via x-ray photoemission spectroscopy, ultraviolet photoemission spectroscopy, and current– voltage (I – V) measurements. Both metal-on-Alq3 and Alq3-on-metal interfaces are investigated. All interfaces...

To discover new bioactive lead compounds for medicinal purposes, 2-cyano-3-(4-substituted)-N-(quinolin-3-yl) acrylamide derivatives 2-24, chromenes 25, 26 and benzochromenes 27, 28 were synthesized. The structures of the newly synthesized compounds were confirmed by elemental analyses, IR, 1H NMR and 13C NMR spectroscopies. In addition, the structure of compound 1 was confirmed through X-ray cr...

A highly practical and efficient preparation of pyrano[3,2-c]pyridone and pyrano[3,2-c]quinoline derivatives was developed via an ionic liquid mediated and promoted multi-component reaction of malononitrile, aldehyde, and 4-hydroxyquinolin-2(1H)-one or 4-hydroxy-6-methylpyridin-2(1H)-one. The combinatorial syntheses were achieved for the first time without applying extra activation energy at am...

The recently-synthesised novel heterocyclic isomers 3-hydroxy-3H -pyrazolo[3,4-c ]isoquinoline (1), 3-hydroxy-3H -pyrazolo[3,4-c ]quinoline (2), 1-hydroxy-1H -pyrazolo[4,3-c ]isoquinoline (3) and 1-hydroxy-1H -pyrazolo[4,3-c ]quinoline (4) show remarkable differences in properties and reactivity, both between each other and compared with the simpler parent compound 1-hydroxypyrazole (0), despit...

Two new quinoldione alkaloids, methyl 2-(3-hydroxy-1-methyl-2,4-dioxo-1,2,3,4-tetrahydroquinolin-3-yl)acetate (1) and 3-hydroxy-1-methyl-3-(2-oxopropyl)quinoline-2,4(1H,3H)-dione (2), and two quinolinone alkaloids previously synthesized but first isolated as natural products, N-methylflindersine (3) and 4-hydroxy-3-methoxy-1-methyl-2(1H)-quinolinone (4), were isolated from the stem bark of Micr...

The thermal properties of copper (II) 8hydroxy quinoline -5 sulphonic acid has been investigated. The thermal decomposition occurs in three stages. All the three stages of decomposition follow one after the other without any stable compound in between showing that the complex is volatile. The kinetics of the thermal decomposition of the complex has been studied using thermogravimetry (TG) in co...

Results are presented from polymer/molecular organic heterostructure light emitting diodes composed of a layer of the conjugated conducting polymer poly~p-phenylene vinylene! ~PPV!, and a layer of fluorescent molecular compound tris~8-hydroxy! quinoline aluminum ~Alq!. The external quantum efficiency of these heterostructure LEDs is ;0.1%, which is over one order of magnitude higher than that o...

Abstract In the present study, zinc oxide (ZnO), gold (Au) and doped (Au-ZnO) nanoparticles (NPs) were successfully synthesized through thermal decomposition of [Au(L)Cl]Cl.H 2 O [Zn(L) ].H complexes, where L is 7-[2-(BenzImidazolyl) Azo]-8-Hydroxy Quinoline (BIAHQ). Several characterization techniques such as XRD, FT-IR), UV–Vis DRS, SEM, TEM, AFM) employed to investigate phase structure, crys...