Dicyanodistyrylbenzene based positional isomers: A comparative study of AIEE and stimuli responsive multicolour fluorescence switching

2021 ◽  
Author(s):  
Ramya NK ◽  
Femina C ◽  
Suganya Suresh ◽  
Divya S Mohanakumari ◽  
Retheesh Krishnan ◽  
...  
Keyword(s):  
Comparative Study ◽  
Single Crystal ◽  
Detailed Analysis ◽  
Positional Isomers ◽  
Stimuli Responsive ◽  
X Ray Diffraction ◽  
X Ray ◽  
Fluorescence Switching

This study reports a detailed analysis of fluorescence switching in a series of octyloxy substituted α-dicyanodistyrylbenzene positional isomers in combination with structures derived from single crystal X-ray diffraction. All the...

Lumefantrine Comparative Study: Single Crystal, Powder X-Ray Diffraction, Hirshfeld Surface, and Thermal Analysis

2020 ◽  
Vol 61 (1) ◽  
pp. 151-159
Author(s):  
M. B. de Freitas-Marques ◽  
M. I. Yoshida ◽  
C. Fernandes ◽  
B. L. Rodrigues ◽  
W. N. Mussel
Keyword(s):  
Thermal Analysis ◽  
Comparative Study ◽  
Single Crystal ◽  
Hirshfeld Surface ◽  
X Ray Diffraction ◽  
X Ray

Orientational Disorder of (trans)-4-Chloro-4′-nitrostilbene: A Detailed Analysis by Single Crystal X-ray Diffraction

2010 ◽  
Vol 10 (1) ◽  
pp. 52-59 ◽  
Author(s):  
Norwid-Rasmus Behrnd ◽  
Gaël Labat ◽  
Paloth Venugopalan ◽  
Jürg Hulliger ◽  
Hans-Beat Bürgi
Keyword(s):  
Single Crystal ◽  
Detailed Analysis ◽  
X Ray Diffraction ◽  
Orientational Disorder ◽  
X Ray

Comparative study of bimetal alkoxo complexes of rhenium, niobium, and tantalum by single-crystal x-ray diffraction and IR spectroscopy

2007 ◽  
Vol 52 (11) ◽  
pp. 1687-1693 ◽  
Author(s):  
O. A. Nikonova ◽  
G. A. Seisenbaeva ◽  
V. G. Kessler ◽  
P. A. Shcheglov ◽  
D. V. Drobot
Keyword(s):  
Ir Spectroscopy ◽  
Comparative Study ◽  
Single Crystal ◽  
X Ray Diffraction ◽  
X Ray

scholarly journals Comparative Study of Structural Properties of YBa2Cu3O7 Thin Films on SrTiO3 Single Crystal and Bicrystal Substrates by X- ray Diffraction

2005 ◽  
Vol 868 ◽  
Author(s):  
M.A. Navacerrada ◽  
A. Mehta ◽  
H.S. Sahibudeen ◽  
J.V. Acrivos
Keyword(s):  
Thin Films ◽  
Grain Boundary ◽  
Comparative Study ◽  
Single Crystal ◽  
Structural Properties ◽  
Periodic Lattice ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ybco Thin Films ◽  
Symmetrical Tilt

AbstractWe present a comparative study in terms of structural properties deduced from X - ray diffraction diagrams between YBa2Cu3O7 (YBCO) thin films fabricated on SrTiO3 (STO) single crystal substrates and bicrystallines substrates with a symmetrical tilt angle of 24 degrees. Periodic Lattice Distortions (PLD) have been observed around different Bragg peaks in YBCO thin films deposited on STO bicrystals while only diffraction peaks have been measured in the diagrams corresponding to the YBCO thin films deposited on STO single crystal substrates. Only in regions situated a 3.5 mm at both sides of the grain boundary the PDL have been investigated. Scans along different (h, k, l) directions allow us to conclude that the qPLD vector associated to the distortion is along the (h,-k,0) direction. However, we found that the amplitude of the components of the qPLD vector depend on the Bragg peak chosen. We believe such a result indicates that we have not a PDL with a simple qPLD vector. In this line, other (h, k, l) directions must be investigated to deduce the exact origin of the qPLD vector. Nevertheless, independently on the qPLD vector associated to the PLD, we believe that such a distortion in the lattice is a consequence of the stress field induced by the grain boundary in the YBCO thin film deposited on the bricrystal.

Dibenzo[b,e][1,4]diazepin-1-ones and their Ring-Opened Derivatives: Revisited Synthesis, 2D NMR and Crystal Structure

Synlett ◽  
2017 ◽  
Vol 28 (17) ◽  
pp. 2247-2252 ◽  
Author(s):  
Norah Bennamane ◽  
Oualid Talhi ◽  
Artur Silva ◽  
Brahim Cherfaoui ◽  
Houria Lakhdari ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Carboxylic Acid ◽  
Single Crystal ◽  
Ring Opening ◽  
Oxalyl Chloride ◽  
2D Nmr ◽  
Positional Isomers ◽  
X Ray Diffraction ◽  
X Ray ◽  
Catalyst Free

The synthesis of 2,3,4,5,10,11-hexahydro-1H-dibenzo[b,e][1,4]diazepin-1-ones was revisited and a catalyst-free method was established, by exploring the reactivity of 3-[(2-aminoaryl)amino]dimedones towards carbonylated electrophiles. 2D NMR and single-crystal X-ray diffraction studies were used to characterize the structures unequivocally and to review the mechanism leading to the formation of supposed positional isomers. The action of 3-[(2-aminoaryl)amino]dimedones on chromene-3-carboxylic acid, fumaryl, and oxalyl chloride has led to dibenzo[b,e][1,4]diazepin-1-one ring opening to produce novel Z-configured enaminone and linear diamides.

Electron Microscopy of Shock Loaded Polycrystalline Beryllium

1974 ◽  
Vol 32 ◽  
pp. 506-507 ◽  
Author(s):  
J. M. Galbraith ◽  
L. E. Murr ◽  
A. L. Stevens
Keyword(s):  
Electron Microscopy ◽  
Wave Propagation ◽  
Structural Change ◽  
Single Crystal ◽  
Diffraction Pattern ◽  
Shock Loading ◽  
Slip Systems ◽  
Compression Tests ◽  
X Ray Diffraction ◽  
X Ray

Uniaxial compression tests and hydrostatic tests at pressures up to 27 kbars have been performed to determine operating slip systems in single crystal and polycrystal1ine beryllium. A recent study has been made of wave propagation in single crystal beryllium by shock loading to selectively activate various slip systems, and this has been followed by a study of wave propagation and spallation in textured, polycrystal1ine beryllium. An alteration in the X-ray diffraction pattern has been noted after shock loading, but this alteration has not yet been correlated with any structural change occurring during shock loading of polycrystal1ine beryllium.This study is being conducted in an effort to characterize the effects of shock loading on textured, polycrystal1ine beryllium. Samples were fabricated from a billet of Kawecki-Berylco hot pressed HP-10 beryllium.

Crystal structure of an inclusion complex between chiral monoaza-15-crown-5 and S(–)-1-phenyl-ethyl ammonium percholorate

2003 ◽  
Vol 218 (5) ◽  
Author(s):  
Süheyla Özbey ◽  
F. B. Kaynak ◽  
M. Toğrul ◽  
N. Demirel ◽  
H. Hoşgören
Keyword(s):  
Crystal Structure ◽  
Inclusion Complex ◽  
Single Crystal ◽  
X Ray Diffraction ◽  
Space Group ◽  
X Ray ◽  
New Type

AbstractA new type of inclusion complex, S(–)-1 phenyl ethyl ammonium percholorate complex of R-(–)-2-ethyl - N - benzyl - 4, 7, 10, 13 - tetraoxa -1- azacyclopentadecane, has been prepared and studied by NMR, IR and single crystal X-ray diffraction techniques. The compound crystallizes in space group

Sign in / Sign up

Export Citation Format

Share Document