Characterization of submicron-sized drug carrier systems based on solid lipids by synchrotron radiation x-ray diffraction

2008 ◽  
pp. 356-356 ◽  
Author(s):  
K. Westesen ◽  
B. Siekmann ◽  
M. H. J. Koch
Keyword(s):  
Synchrotron Radiation ◽  
Drug Carrier ◽  
X Ray Diffraction ◽  
X Ray ◽  
Carrier Systems ◽  
Drug Carrier Systems

Synthesis and Characterization of Structure of Fe3O4@Graphene Oxide Nanocomposites

2016 ◽  
Vol 25 (6) ◽  
pp. 096369351602500 ◽  
Author(s):  
Ruimin Fu ◽  
Mingfu Zhu
Keyword(s):  
Graphene Oxide ◽  
Drug Carrier ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Ft Ir ◽  
Co Precipitation ◽  
Ft Ir Spectroscopy

Nowadays, the hummers method for preparation of graphene oxide (GO) was improved. The grapheme oxide @ Fe3O4 magnetic nanocomposites were synthesized by co-precipitation method. After analysing the morphology and structure of obtained nanocomposites by X-ray diffraction (XRD), transmission electron microscope (TEM) and Fourier transform infrared (FT-IR) spectroscopy, the result was shown as follows. The particle size of Fe3O4 in nanocomposites is 30 nm. Many functional groups are found in grapheme oxide, and such groups could be used to bind with the drug. In the test for magnetic properties, the nanocomposites gathered rapidly in the vicinity of the permanent magnet. The nanocomposites, with high superparamagnetism, can be used in the following applications: drug targeting transports, drug carrier, and diagnosis assistant system.

Characterization of crystal system of BaPb1−xBixO3 with X-ray diffraction for synchrotron radiation

1997 ◽  
Vol 102 (7) ◽  
pp. 561-564 ◽  
Author(s):  
T. Hashimoto ◽  
R. Hirasawa ◽  
T. Kobayashi ◽  
H. Hirai ◽  
H. Tagawa ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
X Ray Diffraction ◽  
X Ray ◽  
Crystal System

scholarly journals Encapsulation of Metronidazole in Biocompatible Macrocycles and Structural Characterization of Its Nano Spray-Dried Nanostructured Composite

Molecules ◽  
2021 ◽  
Vol 26 (23) ◽  
pp. 7335
Author(s):  
Mirella Mirankó ◽  
Mónika Megyesi ◽  
Zsombor Miskolczy ◽  
Judit Tóth ◽  
Tivadar Feczkó ◽  
...  
Keyword(s):  
Rational Design ◽  
Drug Carrier ◽  
Nanostructured Composite ◽  
Preferential Binding ◽  
Order Of Magnitude ◽  
Model Drug ◽  
Carrier Systems ◽  
Drug Carrier Systems ◽  
Spray Dried

Due to the great potential of biocompatible cucurbit[7]uril (CB7) and 4-sulfonatocalix[4]arene (SCX4) macrocycles in drug delivery, the confinement of the pharmaceutically important metronidazole as an ionizable model drug has been systematically studied in these cavitands. Absorption and fluorescence spectroscopic measurements gave 1.9 × 105 M−1 and 1.0 × 104 M−1 as the association constants of the protonated metronidazole inclusion in CB7 and SCX4, whereas the unprotonated guests had values more than one order of magnitude lower, respectively. The preferential binding of the protonated metronidazole resulted in 1.91 pH unit pKa diminution upon encapsulation in CB7, but the complexation with SCX4 led to a pKa decrease of only 0.82 pH unit. The produced protonated metronidazole–SCX4 complex induced nanoparticle formation with protonated chitosan by supramolecular crosslinking of the polysaccharide chains. The properties of the aqueous nanoparticle solutions and the micron-sized solid composite produced therefrom by nano spray drying were unraveled. The results of the present work may find application in the rational design of tailor-made self-assembled drug carrier systems.

Characterization of Microbe-Mineral Interfacial Interaction Based on Synchrotron Radiation Techniques

2015 ◽  
Vol 1130 ◽  
pp. 123-126 ◽  
Author(s):  
Jin Lan Xia ◽  
Hong Chang Liu ◽  
Zhen Yuan Nie ◽  
Hong Rui Zhu ◽  
Yun Yang ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Interfacial Interaction ◽  
X Ray Diffraction ◽  
Edge Structure ◽  
X Ray ◽  
Scanning Transmission ◽  
Synchrotron Radiation Techniques ◽  
Ft Ir ◽  
Sulfur Oxidizing

This article presents the progress on characterization of the interfacial interaction between sulfur oxidizing microbes and sulfide minerals by using of synchrotron radiation-based techniques including S/Fe/Cu X-ray absorption near-edge structure spectroscopy (XANES), X-ray Diffraction (XRD), micro-X-ray fluorescence (μ-XRF) mapping and micro-scanning transmission X-ray microscopy (μ-STXM) imaging, together with other accessory approaches such as SEM/EDS, Raman spectroscopy, FT-IR spectroscopy, and electrochemical methods as well as comparative proteomics methodology.

Structural Characterization of Nickel(II) Tetraphenylporphyrin

1996 ◽  
Vol 49 (12) ◽  
pp. 1273 ◽  
Author(s):  
AL Maclean ◽  
GJ Foran ◽  
BJ Kennedy ◽  
P Turner ◽  
TW Hambley
Keyword(s):  
Synchrotron Radiation ◽  
Single Crystal ◽  
Bond Length ◽  
Diffraction Pattern ◽  
Structural Characterization ◽  
X Ray Diffraction ◽  
X Ray ◽  
Bond Lengths ◽  
Single Crystal Analysis

The structure of 5,10,15,20-tetraphenylporphinatonickel(II) ([Ni( tpp )]) has been studied by both X-ray diffraction (powder and single-crystal methods) and EXAFS. The bond lengths obtained from analysis of the EXAFS agree, within standard deviations, with those obtained from the X-ray diffraction studies. The Ni-N bond length of 1.93(1) Ǻ agrees especially well with the value of 1.931(2) Ǻ obtained from the single-crystal analysis. The powder X-ray diffraction pattern, collected by using synchrotron radiation, is presented.

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