Synthesis and characterization of lanthanide doped nanophosphors

... SYNTHESIS AND CHARACTERIZATION OF LANTHANIDE DOPED NANOPHOSPHORS BY HUANG HAI (B.Eng.) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF CHEMISTRY NATIONAL UNIVERSITY OF ... doped nanophosphors and the other is to investigate various physical and optical characteristics of lanthanide doped nanophosphors In this thesis, a series of...

Ngày tải lên: 16/09/2015, 17:14

... alkylation leading to a depletion of mtDNA in intact cells (Fig 1) Here we report the synthesis and characterization of a novel mitochondria- targeted alkylating reagent and show that it alkylates ... One approach to increase the duration of PNA binding to DNA is to conjugate it to a DNAalkylating reagent so that the PNA becomes covalently bound to its tar...

Ngày tải lên: 20/02/2014, 11:20

... sub5910 strates of H+ ⁄ peptide cotransporters, such as Gly-Sar, Ala-Ala, Lys-Lys, Ala-Asp, d-Phe-Ala, Ala-Ala-Ala, d-aminolevulinic acid, cefadroxil and Ala-4-nitroanilide (all 100 lm, Table 1) ... UK) Dexamethasone, apotransferrin, Gly-Gln, AlaAla, Ala-Ala-Ala, Lys-Lys, d-aminolevulinic acid, cefadroxil, Gly, Pro-Ala, 8-aminooctanoic acid and Gly-Sar were from Sigma-Aldrich (Deisenho...

Ngày tải lên: 07/03/2014, 05:20

... characteristics of the fabricated SiNWs solar cell under dark and light conditions the thickness of Si base substrate more thinly For improvement of conversion efficiency of the SiNWs solar cells, the ... performance Therefore, further reduction of the reflectance will be expected from the optimization of the synthesis conditions of SiNWs For analysis of the electri...

Ngày tải lên: 16/03/2014, 15:12

... the electrical and gas sensing behavior of ZnO nanowires Fig Characteristics of In3 O2 nanowires: (a) SEM image of In3 O2 nanowires, (b) TEM image of nanowire 70 nm in width, and (c) ED pattern ... image of a nanowire, and (e) linescan of the HAADF signal (solid line) and numerical fit of the shape of the nanowire (dashed line) As both composition and phase ca...

Ngày tải lên: 16/03/2014, 15:25

... El Ayeb, M., Rochat, H., Allen, P.D., Pessah, I.N., De Waard, M & Sabatier, J.M (2000) Chemical synthesis and characterization of maurocalcine, a scorpion toxin that activates Ca2+ release channel/ryanodine ... synthesis and characterization of Pi1, a scorpion toxin from Pandinus imperator active on K+ channels Eur J Biochem 267, 5149–5155 Lebrun, B.,...

Ngày tải lên: 17/03/2014, 10:20

... To the best of our knowledge, this is the first time to observe this novel morphological structure of the nanocomposites of rutile nanocrystals and titanate nanotubes Fig XRD patterns of the starting ... large amount of water and hydroxyl groups existed in the tubular products because of the existence of a bending vibration of H O H at 1630 cm−1 , and a strong stretch...

Ngày tải lên: 19/03/2014, 16:48

... agglomerate and form fusiform nanocrystallines Finally, the ␣ -FeOOH Fig The EDS spectra of the as-prepared porous fusiform ␣-Fe2 O3 nanocrystallines 220 X Liu et al / Journal of Alloys and Compounds ... pattern of the rodlike ␣ -FeOOH nanocrystallines taken on a mass of ␣ -FeOOH nanorods reveals the satisfactory crystallinity of the sample, which can be indexed to the...

Ngày tải lên: 19/03/2014, 16:48

... sharp diffraction peaks (Fig 1a) are observed, indicative of high-degree crystallinity On the other hand, the as-synthesized h- WO3 with the NH4 + -based EDTA sample showed broader peaks with ... urchin-like (NH4 + -based EDTA) and (c) JCPDS card # 3 3-1 387, hydrothermally synthesized at 180 ◦ C for h solutions are shown in Fig For the as-synthesized h- WO3 with Na+ -based EDTA...

Ngày tải lên: 19/03/2014, 16:48

... have been evidenced Thus the hydrothermal route can be successfully used for the synthesis of variousiron oxides taking the advantage of an environmentally friendly and of a less energy consuming ... intensity of the second and ®fth lines of the spectra, in the case of oxides This behaviour can be explained by the preferential orientation of the platelike particles,...

Ngày tải lên: 19/03/2014, 16:48

... distribution of TiO2 nanorods grown on PT-substrate at an annealing temperature of 700 8C and at a hydrothermal growth temperature of 160 8C and with growth time of h Fig SEM image of TiO2 nanorod arrays ... electron diffraction of TiO2 nanorods; (b) lattice fringes image of high-resolution TEM of one single TiO2 nanorod at the side surface that TiO2 na...

Ngày tải lên: 19/03/2014, 16:48

... patterns of Fe3+ -doped SnO2 nanoparticles: (a) SGC series and (b) SGH series pound Because of the interference of Fe3+ with SnO2 lattice, the crystallinity of the Fe3+ -doped SnO2 nanoparticles ... samples of pure SnO2 and 10% Fe3+ doped SnO2 are shown in Figs and The grain sizes of SnO2 calculated by Scherrer formula are showed in Table Compared to pure SnO...

Ngày tải lên: 20/03/2014, 13:08

... JW Polypyrrole coated carbon nanotubes: synthesis, characterization, and enhanced electrical properties Synth Met 2007;157:374–9 [38] Guo H, Zhu H, Lin H, Zhang J Polypyrrole- multi-walled carbon ... conductivities and these results may be due to the decrease in the thickness of PPy with the presence of high content of PSS In order to understand the role of PSS during t...

Ngày tải lên: 20/03/2014, 13:08

... Results and discussions The structures of the PPy/Zn0.5Cu0.5Fe2O4 nanocomposite were investigated by FTIR spectroscopy and X-ray diffraction FTIR spectra of the PPy and PPy/Zn0.5Cu0.5Fe2O4 nanocomposite ... XRD patterns of PPy/Zn0.5Cu0.5Fe2O4 nanocomposite (a) and the reference standard data for Zn0.5Cu0.5Fe2O4 of the JCPDS file No 77-0012 (b) Fig SEM micrographs of Zn0...

Ngày tải lên: 20/03/2014, 13:08

... Fig – XPS Spectra of WO3 nanostructures: a) O1 s and b) W4 f axis with an inter-planar distance of 0.38 nm Raman, EDS and XPS analysis confirmed that the chemical structure and oxidation states ... procuring WO3 nanostructures is a modification of the method reported by Albiter et al for MoO3 nanorods [20] and Therese et al for WO3 nanostructures [18] The main d...

Ngày tải lên: 20/03/2014, 13:08