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Aboulhadeed S, Ghali M, Ayad MM. All organic homojunction PEDOT:PSS p-n diode. Sci Rep 2022; 12:12485. [PMID: 35864186 PMCID: PMC9304419 DOI: 10.1038/s41598-022-16432-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 07/11/2022] [Indexed: 11/09/2022] Open
Abstract
It is widely known that poly(3,4-ethylene dioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) is only a p-type material, and thus there is a challenge to fabricating all PEDOT:PSS based p–n device. Here, and for the first time, we introduce a new homojunction p–n diode device based solely on PEDOT:PSS thin films. The diode shows a nonlinear I–V behavior with a rectification ratio of 3 and a turn-on voltage ~ 1.4 V.
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Affiliation(s)
- S Aboulhadeed
- Department of Physics, Institute of Basic and Applied Science, Egypt-Japan University of Science and Technology, Alexandria, Egypt.,Polymer Materials Research Department, Advanced Technologies and New Materials Research Institute, City of Scientific Research and Technological Applications, Alexandria, Egypt
| | - M Ghali
- Department of Physics, Institute of Basic and Applied Science, Egypt-Japan University of Science and Technology, Alexandria, Egypt. .,Physics Department, Kafrelsheikh University, Kafrelsheikh, Egypt.
| | - M M Ayad
- Department of Chemistry, Institute of Basic and Applied Science, Egypt-Japan University of Science and Technology, Alexandria, Egypt.,Chemistry Department, Tanta University, Tanta, Egypt
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Minisy IM, Salahuddin NA, Ayad MM. Chitosan/polyaniline hybrid for the removal of cationic and anionic dyes from aqueous solutions. J Appl Polym Sci 2018. [DOI: 10.1002/app.47056] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- I. M. Minisy
- Institute of Macromolecular Chemistry; Czech Academy of Sciences; 16206 Prague Czech Republic
- Charles University in Prague, Faculty of Science; 12843 Prague Czech Republic
- Department of Chemistry; Faculty of Science, University of Tanta; Tanta 31527 Egypt
| | - N. A. Salahuddin
- Department of Chemistry; Faculty of Science, University of Tanta; Tanta 31527 Egypt
| | - M. M. Ayad
- Department of Chemistry; Faculty of Science, University of Tanta; Tanta 31527 Egypt
- Institute of Basic and Applied Sciences; Egypt-Japan University of Science and Technology; New Borg El-Arab City Alexandria 21934 Egypt
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Ayad MM, El-Nimr MK, Zaki EA. Dielectric Properties Investigation of Polyaniline Prepared by Using Fenton's Reagent. International Journal of Polymer Analysis and Characterization 2009. [DOI: 10.1080/10236660903234827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Ayad MM, Rehab AF, El-Hallag IS, Amer WA. Investigation of the Dopant Exchange Behavior of Polyaniline Hydrochloride Films upon Addition of Sulfuric Acid. International Journal of Polymer Analysis and Characterization 2009. [DOI: 10.1080/10236660903031017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Ayad MM, Salahuddin NA, Abou-Seif AK, Alghaysh MO. pH sensor based on polyaniline and aniline-anthranilic acid copolymer films using quartz crystal microbalance and electronic absorption spectroscopy. POLYM ADVAN TECHNOL 2008. [DOI: 10.1002/pat.1106] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Ayad MM, Rehab AF. Study the effect of inorganic salts on the chemically polymerized aniline films using quartz crystal microbalance. POLYM ADVAN TECHNOL 2008. [DOI: 10.1002/pat.1025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Salahuddin N, Ayad MM, Ali M. Preparation, morphology and electrical conductivity of polyaniline/polyoxyalkylene–montmorillonite exfoliated nanocomposites. POLYM ADVAN TECHNOL 2008. [DOI: 10.1002/pat.989] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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El-Henawee MM, Ibraheim M, Osman S, Ayad MM. Stability-Indicating Methods for the Determination of Rofecoxib. J CHIN CHEM SOC-TAIP 2006. [DOI: 10.1002/jccs.200600081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Gaber M, Ayad MM, El-Sayed YSY. Synthesis, spectral and thermal studies of Co(II), Ni(II) and Cu(II) complexes 1-(4,6-dimethyl-pyrimidin-2-ylazo)-naphthalen-2-ol. Spectrochim Acta A Mol Biomol Spectrosc 2005; 62:694-702. [PMID: 16112608 DOI: 10.1016/j.saa.2005.02.039] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2004] [Revised: 02/21/2005] [Accepted: 02/22/2005] [Indexed: 05/04/2023]
Abstract
The electronic absorption spectra of 1-(4,6-dimethyl-pyrimidin-2-ylazo)-naphthalen-2-ol is studied in organic solvents of different polarity as well as in buffer solutions of varying pH values at different temperatures and different ratios of methanol. The probable structure of the azodye has been assigned on the basis of spectral studies (IR and (1)H NMR). The effect of Co(II), Ni(II) and Cu(II) ions on the emission spectrum of the free azodye is also assigned. The stoichiometry of the metal complexes is determined spectrophotometrically and conductometrically. Novel complexes of Co(II), Ni(II) and Cu(II) with the pyrimidine azodye have been synthesized and characterized on the basis of elemental analyses, molar conductance, magnetic susceptibility measurements, IR, electronic as well as ESR spectral studies The thermal decomposition of the metal complexes is studied by TGA and DTA techniques. The kinetic parameters like activation energy, pre-exponential factor and entropy of activation are estimated.
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Affiliation(s)
- M Gaber
- Chemistry Department, Faculty of Science, Tanta University, Tanta, Egypt.
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Abstract
The chemical oxidation of aniline with ammonium persulfate (APS) in an aqueous acidic solution to form polyaniline (PANI) films has been studied using the quartz crystal microbalance (QCM) technique. The kinetics of the film formation was investigated. The reaction exhibited half-order with respect to APS and first-order to aniline. The effect of temperature on the growth rate of PANI films was studied. The activation energy is 39.79 kJ/mol. This is in agreement with the corresponding one determined for the chemical polymerization of PANI in the bulk. The UV-visible spectra of the PANI films grown onto a glass support immersed into the bulk solution were measured. The absorption of the PANI film with time was also studied and compared to the growth of the PANI film thickness using the QCM technique.
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Affiliation(s)
- M M Ayad
- Department of Chemistry, Faculty of Science, University of Tanta, Tanta, Egypt.
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Ayad MM, El-Hefnawy GB, Bahlol GW. Charge transfer complexes of methylnaphthalene derivatives with TCNE in CCl4. Spectrochim Acta A Mol Biomol Spectrosc 2002; 58:161-166. [PMID: 11808642 DOI: 10.1016/s1386-1425(01)00512-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The spectrophotometric and thermodynamic properties of different substituted methylnaphthalenes charge transfer (CT) complexes with tetracyanoethylene have been studied in carbon tetrachloride. The spectral characteristics of the CT bands have also been discussed in relation to the positions of methyl groups. The formation constants and the spectral properties of the complexes are markedly affected with the substitution position of the methyl groups. The ionization potentials of the donors are determined.
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Affiliation(s)
- M M Ayad
- Department of Chemistry, Faculty of Science, University of Tanta, Egypt
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Ayad MM, Shalaby AA, Abdellatef HE, Elsaid HM. Spectrophotometric determination of certain cephalosporins through oxidation with cerium(IV) and 1-chlorobenzotriazole. J Pharm Biomed Anal 1999; 20:557-64. [PMID: 10701972 DOI: 10.1016/s0731-7085(99)00014-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- M M Ayad
- Analytical Chemistry Department, Faculty of Pharmacy, Zagazig University, Egypt
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Abstract
Two sensitive spectrophotometric and atomic absorption spectrometric procedures are developed for the determination of certain cephalosporins (cefotaxime sodium and cefuroxime sodium). The spectrophotometric methods are based on the charge-transfer complex formation between these drugs as n-donors and 7,7,8,8-tetracyanoquinodimethane (TCNQ) or p-chloranilic acid (p-CA) as pi-acceptors to give highly coloured complex species. The coloured products are measured spectrophotometrically at 838 and 529 nm for TCNQ and p-CA, respectively. Beer's law is obeyed in a concentration range of 7.6-15.2 and 7.1-20.0 microg x ml(-1) with TCNQ, 95.0-427.5 and 89.0-400.5 microg x ml-1 with p-CA for cefotaxime sodium and cefuroxime sodium, respectively. The atomic absorption spectrometric methods are based on the reaction of the above cited drugs after their alkali-hydrolysis with silver nitrate or lead acetate in neutral aqueous medium. The formed precipitates are quantitatively determined directly or indirectly through the silver or lead content of the precipitate formed or the residual unreacted metal in the filtrate by atomic absorption spectroscopy. The optimum conditions for hydrolysis and precipitation have been carefully studied. Beer's law is obeyed in a concentration range of 1.9-11.4 and 1.78-8.90 microg x ml(-1) with Ag(I), 14.2-57.0 and 13.3-53.4 microg x ml-1 with Pb(II) for cefotaxime sodium and cefuroxime sodium, respectively (for both direct and indirect procedures). The spectrophotometric and the atomic absorption spectrometric procedures hold well their accuracy and precision when applied to the analysis of cefotaxime sodium and cefuroxime sodium dosage forms.
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Affiliation(s)
- M M Ayad
- Analytical Chemistry Department, Faculty of Pharmacy, Zagazig University, Egypt
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Abdellatef HE, Ayad MM, Taha EA. Spectrophotometric and atomic absorption spectrometric determination of ramipril and perindopril through ternary complex formation with eosin and Cu(II). J Pharm Biomed Anal 1999; 18:1021-7. [PMID: 9925338 DOI: 10.1016/s0731-7085(98)00113-7] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Two sensitive, spectrophotometric and atomic absorption spectrometric procedures are developed for the determination of ramipril and perindopril. Both methods are based on the formation of a ternary complex, extractable with chloroform, between copper(II), eosin and the two cited drugs. Spectrophotometrically under the optimum condition, the ternary complexes showed an absorption maximum at 535 nm, with apparent molar absorptivities of 6.55 and 4.00 x 10(3) mol(-1) x cm(-1) and Sandell's sensitivities of 5.80 x 10(-2) and 1.04 x 10(-1) microg x cm(-2) for perindopril and ramipril, respectively. The solution of ternary complex obeyed Beer's law in concentration ranges 10-60 and 20-100 microg x ml(-1) for perindopril and ramipril, respectively. The proposed method was applied to the determination of the two cited drugs in pharmaceutical tablets. The atomic absorption spectrometric method, directly through the quantitative determination of copper content of the organic extract of the complex, was also investigated for the purpose of enhancing the sensitivity of the determination. The spectrophotometric and atomic absorption spectrometric procedures hold their accuracy and precision well when applied to the determination of ramipril and perindopril dosage forms.
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Affiliation(s)
- H E Abdellatef
- Analytical Chemistry Department, Faculty of Pharmacy, Zagazig University, Egypt
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Ayad MM, Ayad MI, Mansour IA. Synthesis, thermal and electrical studies on solvated oxovanadium(IV) complexes with schiff bases derived from aromatic diamines and 2-hydroxy-1-naphthaldehyde. Monatsh Chem 1993. [DOI: 10.1007/bf00814145] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Belal S, el Kheir AA, Ayad MM, Al Adl SA. Spectrophotometric determination of some pharmaceutical carbonyl compounds through oximation and subsequent charge-transfer complexation reactions. Analyst 1986; 111:1039-43. [PMID: 3777443 DOI: 10.1039/an9861101039] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Karawya MS, Khayyal SE, Farrag NM, Ayad MM. Screening of diphenylamine as an antihyperglycaemic agent in certain edible plant organs. Acta Pharm Hung 1986; 56:55-8. [PMID: 3705965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Ayad MM, Belal SF, Al Adel SA, el Kheir AA. Determination of griseofulvin, carvone and menthone through intermediate oxime formation. Analyst 1985; 110:823-6. [PMID: 4037362 DOI: 10.1039/an9851000823] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Ayad MM, Belal S, el Adl SM, Al Kheir AA. Spectrophotometric determination of some corticosteroid drugs through charge-transfer complexation. Analyst 1984; 109:1417-22. [PMID: 6529002 DOI: 10.1039/an9840901417] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Ayad MM, el-Hay MH. Spectrofluorimetric micro-determination of imidazoline derivatives using 1-dimethylaminonaphthalene-5-sulphonyl chloride. Analyst 1984; 109:1431-4. [PMID: 6529005 DOI: 10.1039/an9840901431] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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