Optical and electrical properties of novel peripherally tetra and mono -quinoleinoxy substituted metallophtalocyanines

Zahou, I.; Chaâbane, Rafik Ben; Mlika, R.; Touaiti, Sarra; Jamoussi, Bassem; Ouada, H. Ben

doi:10.1007/s10854-014-1955-6

Cited by 7 publications

(6 citation statements)

References 41 publications

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“…Beyond a critical frequency of order of 100 kHz, the conductance starts to increase. Consequently, a charge carrier will hop from a site to another one [3]. According to the conductance at 0V, obtained in Results gathered in Figure . 2c indicate that BPS-AN is more conductive than TDP-AN.…”

Section: The Conductance Measurementsmentioning

confidence: 97%

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<strong>Electrical study of new anthracene derivatives for electronics applications </strong>

Attia

Teka

Majdoub

et al. 2018

Proceedings of MOL2NET 2018, International Conference on Multidisciplinary Sciences, 4th Edition

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Due to the holes high transport mobility, anthracene derivates are widely used for the elaboration of OLEDs and other organic thin-layer-based electronic, such as transistors and photovoltaic cells. This study aims to investigate the electric properties of two new anthracene derivatives: 9-{[4-({[4-(9 anthrylmethoxy)phenyl]sulfanyl}methyl)] methyl]anthracene (TDP-AN) and 4-(9anthrylmethoxy) benzyl[4-(9-anthrylmethoxy)phenyl]sulfone (BPS-AN). The main difference between them is related to the functional group between the two central phenyls. Conductance measurements results show a frequency-independent behaviour, for low frequencies ranging between 0.1 and 100 KHz, while they exhibit a power law model for higher ones. BPS-AN was found more conductive than the TDP-AN. Impedance spectroscopy (IS) was then investigated to understand the charge carrier mechanisms in both TDP-AN and BPS-AN molecules. Measurements were carried out in the frequency range 100 Hz -10 MHz at different bias voltages (from 0 V to 3 V). The obtained results agree with conductivity measurement ones.

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Section: The Conductance Measurementsmentioning

confidence: 97%

“…The dc conductance (Gdc) remains constant at low frequencies (0.1-100 kHz). Thus, a charge carrier jumps from one position to its neighbouring vacant one [3]. Beyond a critical frequency of order of 100 kHz, the conductance starts to increase.…”

Section: The Conductance Measurementsmentioning

confidence: 99%

<strong>Electrical study of new anthracene derivatives for electronics applications </strong>

Attia

Teka

Majdoub

et al. 2018

Proceedings of MOL2NET 2018, International Conference on Multidisciplinary Sciences, 4th Edition

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“…Additionally, the SEM image of the β-CD membrane ( Fig. 3(b)) shows a compact structure and homogeneous surface 23 . This is due to the high interaction between ITO substrate and the alignment film 9 .…”

Section: Surface Morphology Studiesmentioning

confidence: 98%

Dielectric relaxation behavior of nematic liquid crystal cell using β-cyclodextrin as an alignment layer

Sahraoui

Abderrahmen²,

Mlika³

et al. 2016

Mediterr.J.Chem

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In the present investigation, we report the dielectric properties of a symmetric Nematic Liquid Crystal (NLC) cell using Beta Cyclodextrins (β-CD) as alignment layers. These layers were deposited onto Indium Tin Oxide (ITO) surface by thermal evaporation and then characterized using contact angle measurement. This revealed a hydrophilic character attributed to the presence of hydroxyl groups. Morphological study was carried out by Scanning Electronic Microscopy (SEM).The dynamic impedance study of the Liquid Crystal (LC) cell in a wide frequency range from 1mHz to 13MHz was reported. It was found that the β-CD alignment layer had a blocking effect on the NLC cell at a high frequency range. We also report the relaxation mechanism of NLC cell which is modeled by an appropriate equivalent circuit in order to understand the electrical properties of the liquid crystal cell and to investigate the processes taking place at different interfaces.

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“…The synthesis of symmetric Zn-phthalocyanines with four identical substituents was performed in two steps, following the published methods. 17,36,37 The first one is the substitution of the alcohol derivative of the desired group (either quinoleinoxy or (2-trimethyl-4-methyloxy)-phenoxy) at position 4 of 4-nitrophthalonitrile, forming an ether link. The second step is the cyclo-tetramerization of the obtained phthalonitrile intermediate to which the substituent of interest was grafted.…”

Section: Synthesis Of Phthalocyaninesmentioning

confidence: 99%

“…The synthesis of these particular Zn-PC derivatives was previously described 36 and their electrical properties were measured when embedded in a thin film electrode. 37 The effect of the number of substituents 38 and their gas-interacting properties 39 were theoretically investigated by DFT, but never experimentally. The strategy presented here involves measuring the effect of substituents on the simplest system comprising only Zn-PC and NO.…”

Section: Introductionmentioning

confidence: 99%

The control of nitric oxide dynamics and interaction with substituted zinc-phthalocyanines

Ben Brahim,

Touaiti,

Sellés

et al. 2024

Dalton Trans.

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Optical and electrical properties of novel peripherally tetra and mono -quinoleinoxy substituted metallophtalocyanines

Cited by 7 publications

References 41 publications

<strong>Electrical study of new anthracene derivatives for electronics applications </strong>

<strong>Electrical study of new anthracene derivatives for electronics applications </strong>

Dielectric relaxation behavior of nematic liquid crystal cell using β-cyclodextrin as an alignment layer

The control of nitric oxide dynamics and interaction with substituted zinc-phthalocyanines

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