Synthesis, crystal structure and thin-film-optical properties of 3-amino-2-(2-nitrophenyl)diazinyl-3-(morpholin-1-yl)acrylonitrile

El-Menyawy, E.M.; Elagamey, A. A.; El‐Gogary, Sameh R.; El-Enein, R. A. N. Abu

doi:10.1016/j.saa.2013.02.001

Cited by 14 publications

(5 citation statements)

References 24 publications

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“…The crystallographic data and ortep viewing for both forms of the molecule are given in Table S2 and Figure 1, respectively. All the geometrical parameters of both forms are good aggreement with similar reported structures [61–63] . The differences between the polymorphic forms can be seen from the cell parameters that the crystal structures of the form I and II are determined by the space group Cc (Z=4) with one of the independent molecules in the asymmetric unit and P 2 1 / c (Z=2) with the two independent molecules in the asymmetric unit, respectively.…”

Section: Resultssupporting

confidence: 78%

“…All the geometrical parameters of both forms are good aggreement with similar reported structures. [61][62][63] The differences between the polymorphic forms can be seen from the cell parameters that the crystal structures of the form I and II are determined by the space group Cc (Z = 4) with one of the independent molecules in the asymmetric unit and P21/c (Z = 2) with the two independent molecules in the asymmetric unit, respectively. According to Table S1, the cell volume of form I is larger than form II under the premise that there exist the different number molecules in two different unit cells.…”

Section: Crystallographic Resultsmentioning

confidence: 99%

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The Importance of Polymorphism Dependent Aggregation Induced Enhanced Emission of the Acrylonitrile Derivative: Helical J Type and Antiparallel H Type Stacking Modes

et al. 2021

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In this study to analyze the structure-property relationship of synthesized π-conjugated acrylonitrile derivative in terms of polymorphism dependent emission and conformational polymorphism, single crystal x-ray diffraction method, photophysical and theoretical studies were performed. The fluorescent molecule with two polymorphic structure were presented to demonstrate the effect of the molecular conformation and stacking type on the polymorphism dependent emission in aggregate state. According to results of crystallography and photophysical studies, both form of the molecule displayed aggregation induced enhanced emission (AIEE) property in the solid phase due to the restricted intramolecular rotation (RIR) and favourable stacking interactions including the antiparallel H type, J type stacking modes and intramolecular charge transfer (ICT) process. As a result, J type and antiparallel H type stacking mode with the restricted intramolecular rotation make the crystals higly emissive in solid phase. We believe that, studied two polymorphs will be best candidates for the πconjugated acrylonitrile derivatives in the optoelectronic field. Moreover, this study will provide an overview of the importance of conformational polymorphism, stacking type on fluorescence properties of the polymorphic structures and propose new ways for targeted polymorphic molecular design strategies in acrylonitrile derivatives.

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Section: Resultssupporting

confidence: 78%

Section: Crystallographic Resultsmentioning

confidence: 99%

The Importance of Polymorphism Dependent Aggregation Induced Enhanced Emission of the Acrylonitrile Derivative: Helical J Type and Antiparallel H Type Stacking Modes

et al. 2021

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“…B is constant, and r is the transition-type parameter [30]. In the current case, r is equal to 2 for describing the direct allowed transitions.…”

Section: Optical Band Gap Characterizationsmentioning

confidence: 99%

Photocatalytic Degradation of Phenol Red in Water on Nb(x)/TiO2 Nanocomposites

2022

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In this paper, the photocatalytic effect of Nb(x)/TiO2 nanocomposites on the degradation of phenol red (PR) was studied. Nb(x)/TiO2 nanocomposites are fabricated by a simple sol-gel route with new experimental conditions. The structural and optical properties were determined using high transmission electron microscopy (HRTEM), X-ray diffraction, Raman spectroscopy, photoluminescence, and UV-vis absorbance spectroscopy. Compared to pure anatase TiO2, the recently fabricated Nb(x)/TiO2 nanocomposite has a shift in the optical band edge to the visible wavelength. Consequently, it has high performance in adsorption capacity and photocatalytic activities. A time of 160 min has been observed to be suitable for mostly degradable 20 mgL−1 of phenol red on Nb(2.0)/TiO2 composite. The kinetic results were in good agreement with the first-order kinetic model at different concentrations. In addition, the results showed that the addition of Nb led to a significant degradation process. The decomposition of phenol red pollutants showed a synergistic effect of the Nb(2.0)/TiO2 nanocomposites on wastewater treatment.

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“…The refractive index of as-deposited shows anomalous dispersion at low wavelengths in which it decreases sharply. At relatively higher wavelengths, the refractive index decreases slightly with increasing wavelength showing normal dispersion which can be explained by single oscillator model [18]. After illumination, the refractive index increases over the whole spectral range.…”

Section: Refractive and Absorption Indicesmentioning

confidence: 87%

Illumination-induced changes on the optical functions and valence band splitting parameters of flash evaporated CuInTe2 films

Zedan

El-Menyawy

2016

Optik

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Synthesis, crystal structure and thin-film-optical properties of 3-amino-2-(2-nitrophenyl)diazinyl-3-(morpholin-1-yl)acrylonitrile

Cited by 14 publications

References 24 publications

The Importance of Polymorphism Dependent Aggregation Induced Enhanced Emission of the Acrylonitrile Derivative: Helical J Type and Antiparallel H Type Stacking Modes

The Importance of Polymorphism Dependent Aggregation Induced Enhanced Emission of the Acrylonitrile Derivative: Helical J Type and Antiparallel H Type Stacking Modes

Photocatalytic Degradation of Phenol Red in Water on Nb(x)/TiO2 Nanocomposites

Illumination-induced changes on the optical functions and valence band splitting parameters of flash evaporated CuInTe2 films

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