Spectral, thermal and optical–electrical properties of the layer-by-layer deposited thin film of nano Zn(II)-8-hydroxy-5-nitrosoquinolate complex

Haggag, Sawsan M.S.; Farag, A.A.M.; Abdel-Rafea, M.

doi:10.1016/j.saa.2013.02.042

Cited by 9 publications

(13 citation statements)

References 28 publications

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“…In the absorbance spectrum of Alq 3 -TCNQ film, an absorption band of 375 nm is observed. It has been found that this energy absorption is due to the electron transition from the HOMO in the Alq 3 to the LUMO in the TCNQ [ 22 ]. In another context, an observed small band at 860 nm is also due to charge transfer with TCNQ.…”

Section: Resultsmentioning

confidence: 99%

“…Metal quinolines (MQs) are small molecules that have been used in organic optoelectronic devices [ 18 , 19 , 20 , 21 , 22 ] due to their ability to form thin films in solution [ 18 , 23 , 24 , 25 ] and by evaporation [ 19 , 22 , 26 , 27 ] since they exhibit high chemical and thermal stability. MQs also offer easy color tunability with simple synthesis [ 28 , 29 , 30 , 31 ], magnetism properties [ 32 ] and electron transport behavior [ 23 , 28 , 33 ].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the fluorescence of MQs has led to their classification as an important class of electro-luminescent/electron transport materials [ 23 ]. It is also known that changing the central metal ion affects the luminescence peak position of the MQs [ 18 , 20 , 21 , 22 , 23 , 34 ]. Above the MQs family, tris(8-hydroxyquinoline) aluminum (Alq 3 ) is the most popular MQs semiconductor due to its strong luminesce, high electron mobility and, in addition, due to its low cost and simple technology of fabrication [ 26 , 35 ].…”

Section: Introductionmentioning

confidence: 99%

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Preparation of Hybrid Films Based in Aluminum 8-Hydroxyquinoline as Organic Semiconductor for Photoconductor Applications

Sánchez Vergara,

Cantera Cantera,

Rios

et al. 2023

Sensors

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In the present work, we have investigated an organic semiconductor based on tris(8-hydroxyquinoline) aluminum (AlQ3) doped with tetracyanoquinodimethane (TCNQ), which can be used as an organic photoconductor. DFT calculations were carried out to optimize the structure of semiconductor species and to obtain related constants in order to compare experimental and theoretical results. Subsequently, AlQ3-TCNQ films with polypyrrole (Ppy) matrix were fabricated, and they were morphologically and mechanically characterized by Scanning Electron Microscopy, X-ray diffraction and Atomic Force Microscopy techniques. The maximum stress for the film is 8.66 MPa, and the Knoop hardness is 0.0311. The optical behavior of the film was also analyzed, and the optical properties were found to exhibit two indirect transitions at 2.58 and 3.06 eV. Additionally, photoluminescence measurements were carried out and the film showed an intense visible emission in the visible region. Finally, a photoconductor was fabricated and electrically characterized. Applying a cubic spline approximation to fit cubic polynomials to the J-V curves, the ohmic to SCLC transition voltage VON and the trap-filled-limit voltage VTFL for the device were obtained. Then, the free carrier density and trap density for the device were approximated to n0=4.4586×10191m3 and Nt=3.1333×10311m3, respectively.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Preparation of Hybrid Films Based in Aluminum 8-Hydroxyquinoline as Organic Semiconductor for Photoconductor Applications

Sánchez Vergara,

Cantera Cantera,

Rios

et al. 2023

Sensors

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“…The physical and chemical effects of this challenging case in electronic structure are still being researched. Moreover, 8-hydroxyquinoline and its derivatives play an important role as chelating ligands for the preparation of various photo-and electroluminescent metal complexes [7,8] and fluorescent chemosensors for metal cations [9][10][11][12][13][14][15][16]. In addition, they exhibit strong pharmacological activities [17].…”

Section: Introductionmentioning

confidence: 99%

The solvatochromism and electronic structure of(E)-2-(2-hydroxystyryl)quinolin-8-ol

Gümüş¹,

Sıdır²,

Sıdır³

et al. 2019

Turk J Chem

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The (E)-2-(2-hydroxystyryl)quinolin-8-ol (abbreviated as HSQ) molecule was synthesized and characterized. The ESIPT, solvatochromism properties, electronic structure, and ground and excited electric dipole moments of this molecule were measured using absorption and fluorescence spectra recorded in 13 different solvents. Its electronic structure via electronic transitions was investigated to find the quantitative values of solvatochromism properties by LSER calculations. The ESIPT mechanism was clarified; ground and excited dipole moments were determined using solvatochromic shift methods. The DFT (B3LYP)/6-311 ++ G(d,p) method and basis set with potential energy surface (PES) calculations of proton transfer were used to explain the ESIPT mechanism. NBO analysis, NLO properties, and behavior under an electric field were also determined.

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“…8HQ is extensively used as the best chelator [4][5][6][7] for metal ions after Ethylenediaminetetraacetic acid (EDTA) due to its chromogenic behavior. Derivatives of 8-hydroxy quinoline have been popular in the field of organometallic chemistry [8,9] and as a fluorescent sensors [10,11] because of the ease of complex formation with various metal ions such as Ag + [12], Cd 2+ [10], Cu 2+ [13,14]. Also the special properties of quinolates were illustrated by simple Werner -type complexes and have been useful in the synthesis of metallosupramolecular materials [15,16].…”

Section: Introductionmentioning

confidence: 99%

Comparative theoretical and experimental study on novel tri-quinoline system and its anticancer studies

Gayathri

Ramachandran

Shankar

et al. 2017

Journal of Molecular Structure

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A novel compound 2-chloro-3,6-bis-(quinolin-8-yloxymethyl)-quinoline 3 bearing a triquinoline moiety has been synthesized from 2-chloro-3,6-dimethyl quinoline 1 and 8-hydroxy quinoline using dry acetone and K2CO3 as a base. 3 has been characterized by using FT-IR, FT-Raman, UV-Vis, 1 H NMR, 13 C NMR spectra and single crystal X-ray diffraction methods. We have also made a combined experimental and theoretical study on the molecular structure, vibrational spectra, NMR, FT-IR, FT-Raman and UV-Vis spectra of 2-chloro-3,6-bis-(quinolin-8-yloxymethyl)-quinoline. The theoretical studies of the title compound have been evaluated by using density functional theory calculations using B3LYP/6-31+G(d,p) and M06-2X/6-31+G(d,p) level of theories. The calculated theoretical values were found to be in good agreement with the experimental findings. The single crystal structure 3 crystallized in the orthorhombic space group Pna21. The compound 3 exhibits higher cytotoxicity in human cervical cancer cell lines (HeLa) than human breast cancer cell lines (MCF7). Highlights • A novel tri-quinoline was synthesized and optimized by density functional theories. • Single crystal XRD, FT-IR, Raman, 1 H, 13 C NMR and UV-Vis spectra were studied. • All the experimental data were compared with theoretical values. • Cytotoxicity was determined by MTT assay and by theoretical calculations.

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Spectral, thermal and optical–electrical properties of the layer-by-layer deposited thin film of nano Zn(II)-8-hydroxy-5-nitrosoquinolate complex

Cited by 9 publications

References 28 publications

Preparation of Hybrid Films Based in Aluminum 8-Hydroxyquinoline as Organic Semiconductor for Photoconductor Applications

Preparation of Hybrid Films Based in Aluminum 8-Hydroxyquinoline as Organic Semiconductor for Photoconductor Applications

The solvatochromism and electronic structure of(E)-2-(2-hydroxystyryl)quinolin-8-ol

Comparative theoretical and experimental study on novel tri-quinoline system and its anticancer studies

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