Chemico-Physical Characterization of Quinizarin Thin Films Deposited by Evaporation

Nasrallah, T. Ben; Bernède, J.C.; Godoy, A.; Rabiller, Claude; Legoff, D.

doi:10.1006/jssc.1993.1299

Cited by 9 publications

(3 citation statements)

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“…The high similarity in IR spectra was expected considering the small difference in terms of hydrogen bonding between the two forms. The IR spectrum of the commercial FI is identical to the spectra reported in the literature 26,27 and the spectrum has been discussed by Nasrallah et al 28 and Xuan et al 29 IR spectra of FI and FII are provided in the ESI. †…”

Section: Characterisation Of Polymorphic Formsmentioning

confidence: 53%

“…The IR spectrum of the commercial FI is identical to the spectra reported in the literature 26,27 and the spectrum has been discussed by Nasrallah et al 28 and Xuan et al 29 IR spectra of FI and FII are provided in the ESI. The high similarity in IR spectra was expected considering the small difference in terms of hydrogen bonding between the two forms.…”

Section: Characterisation Of Polymorphic Formsmentioning

confidence: 57%

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Investigation into solid and solution properties of quinizarin

et al. 2015

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Polymorphism, crystal shape and solubility of 1,4-dihydroxyanthraquinone (quinizarin) have been investigated in acetic acid, acetone, acetonitrile, n-butanol and toluene. The solubility of FI and FII from 20 degrees C to 45 degrees C has been determined by a gravimetric method. By slow evaporation, pure FI was obtained from n-butanol and toluene, pure FII was obtained from acetone, while either a mixture of the two forms or pure FI was obtained from acetic acid and acetonitrile. Slurry conversion experiments have established an enantiotropic relationship between the two polymorphs and that the commercially available FI is actually a metastable polymorph of quinizarin under ambient conditions. However, in the absence of FII, FI is kinetically stable for many days over the temperature range and in the solvents investigated. FI and FII have been characterized by infrared spectroscopy (IR), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), scanning electron microscopy (SEM), transmission and ordinary powder X-ray diffraction (PXRD) at different temperatures. The crystal structure of FII has been determined by single-crystal XRD. DSC and high-temperature PXRD have shown that both FI and FII will transform into a not previously reported hightemperature form (FIII) around 185 degrees C before this form melts at 200-202 degrees C. By indexing FIII PXRD data, a triclinic P (1) over bar cell was assigned to FIII. The solubility of quinizarin FI and FII in the pure organic solvents used in the present work is below 2.5% by weight and decreases in the order: toluene, acetone, acetic acid, acetonitrile and n-butanol. The crystal shapes obtained in different solvents range from thin rods to flat plates or very flat leaves, with no clear principal difference observed between FI and FII.

QC 20160226

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Section: Characterisation Of Polymorphic Formsmentioning

confidence: 53%

Section: Characterisation Of Polymorphic Formsmentioning

confidence: 57%

Investigation into solid and solution properties of quinizarin

et al. 2015

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QC 20160226

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“…3,4) Also, 9,10-anthraquinone and its derivatives have been investigated as reversible optical recording organic materials. [5][6][7] Different functional derivatives of 9,10-anthraquinone have been synthesized and studied by various researchers. [8][9][10][11][12][13] Moreover, the electronic properties of 9,10-anthraquinones are strongly affected by the nature and position(s) of their substituent(s).…”

Section: Introductionmentioning

confidence: 99%

Structural and Electrical Properties of 1,8-Bis(3-hydroxypropylamino) and 1-(3-Hydroxypropylamino)–9,10-anthraquinone Films

Bedi

Bhatia

Kaur

et al. 2008

jjap

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The method of computer aided vacancy migration analysis has been developed to predict the stress induced voiding (SiV) reliability. In this method, distribution of hydrostatic stress was calculated by the finite element analysis (FEA), and vacancy concentration distribution was calculated by the finite difference analysis (FDA). In this paper, SiV acceleration tests were conducted in various widths of Cu lines in organic ultralow-k dielectric (Cu/Ta/ULK/SiCN) or silicon oxide dielectric (Cu/Ta/SiO 2 /SiCN) and these results were compared with the results of the vacancy migration analyses. The number of SiV failures increased in the line with width of 0.35 m for Cu/Ta/SiO 2 /SiCN interconnects and 0.20 m for Cu/Ta/ULK/SiCN interconnects, respectively, under SiV acceleration tests. The results obtained by vacancy migration analysis show similar behavior as the results of SiV acceleration tests. These results reveal that the vacancy migration analysis is useful to predict reliability of interconnects. #

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Electrical conductivity of 1,4‐dihydroxyanthraquinone and the complex silver/dihydroxyanthraquinone

Nasrallah¹,

Bernède²,

Jamali³

1995

Adv Material for Optics Elec

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Quinizarin (1,4‐DHAQ) and Ag/I,4‐DHAQ thin films deposited under vacuum were investigated by I–V measurements at various temperatures. It is shown that when submitted to an electric field of 5 × 105 V cm−1 or less, the I‐V characteristics of AI/DHAQ/AI sandwich structures are ohmic. The temperature dependence is I ∝ exp(‐ΔE/kT). The measured activation energy is 0.3 eV in the case of pure DHAQ and 30meV in the case of Ag/DHAQ. Therefore we can imagine that in the former case the conductivity is controlled by thermally activated hopping above intermolecular barriers, while in the latter case the conductivity can be attributed to tunnelling between silver grains.

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Chemico-Physical Characterization of Quinizarin Thin Films Deposited by Evaporation

Cited by 9 publications

References 0 publications

Investigation into solid and solution properties of quinizarin

Investigation into solid and solution properties of quinizarin

Structural and Electrical Properties of 1,8-Bis(3-hydroxypropylamino) and 1-(3-Hydroxypropylamino)–9,10-anthraquinone Films

Electrical conductivity of 1,4‐dihydroxyanthraquinone and the complex silver/dihydroxyanthraquinone

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