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The cyclometalated Pt(II) acetylide derivative with a 1,3-bis(N-octyl-benzimidazol-2-yl)benzene (N^C^N) ligand and a free terpyridine (TPY) receptor has been successfully synthesized and characterized. X-ray crystallography shows its inefficient conjugation degree between the [(N^C^N)Pt] and TPY planes. This bifunctional complex shows an enhanced 1MLCT/LLCT absorption band (ε = 3.30 × 104 dm3 mol−1 cm−1) centered at λmax = 365 nm, and the well-resolved vibronic-structured 3MLCT/LLCT emission bands (Φ = 0.08, τ = 3.43 μs) in the range of ca. 475–700 nm. Consecutive titrations show that added Zn2+ and Eu(HFA)3 bond to its free TPY receptor with 1 : 2 and 1 : 1 stoichiometry to form the heterotrinuclear Pt–Zn–Pt (Ka = 3.48 × 104 mol−1 dm3) and heterodinuclear Pt–Eu (Ka = 1.73 × 104 mol−1 dm3) complexes, respectively. A sensitizing effect of Zn2+ on the TPY unit, and the incomplete d → f energy transfer from the [(N^C^N)Pt(II)] antenna donor to the Eu(III) center with maximum efficiency of 51.8% are observed. Using an in situ mixed titration strategy, the R/G/B emission triads consisted of red [(TPY)Eu(HFA)3] and green [(N^C^N)Pt(II)] dual phosphorescence and blue [(TPY)Zn(TPY)] fluorescence, which can be well balanced to realize the white-light-emission with CIE coordinates (x = 0.36, y = 0.36) by precisely controlling the molar ratio (9 : 1 : 2) of the parent complexes, Eu(HFA)3 and Zn(ClO4)2. [ABSTRACT FROM AUTHOR]

A 2D lamellar supermolecular complex [Cu(CHNO) · HO] was synthesized and characterized by elementary analysis, infrared spectrum, ultraviolet spectrum, thermogravimetry analysis and crystal X-ray diffraction analysis. The complex belongs to the orthorhombic system, Pbca space group, with a = 1.2797(8), b = 1.2944(8), c = 1.4962(9) nm, Z = 8, V = 2.478(3) nm, D = 1.746 g cm, μ = 1.784 mm, F(000) = 1320, R = 0.0267, wR = 0.0762, GOOF = 1.015, which consists of a Cu(II) ion, two 2-Picolinic acid and a coordinated water molecule. The 5-coordinated geometry of the Cu cation is a distorted tetragonal-pyramidal configuration. The 1D chain structure is formed through hydrogen bonds O(w)-H...O between single cells, and the 2D lamellar supermolecular system is formed through the non-classical hydrogen bonds C-H...O between various chains. The complex displays a distinct absorption band (λ = 648 nm) in aqueous solution. The electrochemical behavior shows a quasi-reversible course. (CCDC: 750880) [ABSTRACT FROM AUTHOR]

Eletriospinning process was used to fabricate Zirconia nanofibers and polyvinyl pyrrolidone (PVP) was employed in this procedure. SEM, TGA, FT-IR and XRD were used to investigate the electrospinning process. Pure PVP was electrospun at the same conditions as comparisons. The results indicated that the fibers had an average diameter about 80 nm with smooth surface. FT-IR spectrum and TGA curve proved that PVP was removed from the fibers after a thermal treatment. It was found that the crystal structure of Zirconia changed at different calcination temperature. The use of PVP, bicomponent solvent of water and ethanol and inorganic salt had positive effects on the morphology of the fibers. [ABSTRACT FROM AUTHOR]

The article reports on obtaining Phenylethanoid glycosides from Houttuynia cordata Thunb., belonging to the Saururacea family. H. cordata has antiviral, anti-inflammatory, and immunostimulating activities. This study isolates and identifies 13 compounds as phenylethanoid glycosides on the basis of extensive spectroscopic analysis.