Yazar "Akçay, Hakkı Türker" için listeleme
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Non-peripherally tetra substituted phthalocyanines bearing benzodioxane moieties: Synthesis, characterization and investigation of electrochemical and spectroelectrochemical properties
Demirbaş, Ümit; Akyüz, Duygu; Akçay, Hakkı Türker; Koca, Atıf; Kantekin, Halit (Elsevier Science Bv, 2019)The 1,4-benzodioxane substituted phthalonitrile compound (3) and non-peripherally tetra substituted cobalt(II) (4), nickel(II) (5) and copper(II) (6) phthalocyanine complexes were synthesized. the structural characterization ... -
Novel 1,2,4-triazole substituted metallo-phthalocyanines: Synthesis, characterization and investigation of electrochemical and spectroelectrochemical properties
Demirbaş, Ümit; Akyüz, Duygu; Akçay, Hakkı Türker; Koca, Atıf; Menteşe, Emre; Kantekin, Halit (Elsevier Science Bv, 2018)The phthalonitrile compound (3) and peripherally tetra substituted zinc(II) (4), nickel (II) (5), iron (II) (6), cobalt (II) (7) and copper (II) (8) phthalocyanines were synthesized for the first time in this study. the ... -
A novel highly porous cellulosic aerogel regenerated by solvent exchange mechanism
Kaya, Mehmet; Demir, Adem; Akçay, Hakkı Türker (Springer, 2019)Cellulose acetate aerogel (CAA) regenerated with toluene solvent was first obtained and analysed in this work using several measurement techniques. CAA, a green and environmentally friendly material, with high thermal ... -
Novel peripheral and non-peripheral oxobenzo[d]thiazol substituted cobalt phthalocyanines: Synthesis, electrochemistry, spectroelectrochemistry, electrocatalytic hydrogen production in alkaline medium
Akyüz, Duygu; Özçifçi, Zehra; Menteşe, Emre; Akçay, Hakkı Türker (Elsevier, 2022)In this study novel oxobenzo[d]thiazol substituted cobalt phthalocyanine complexes were synthesized and characterized by FT-IR, NMR, UV-vis spectroscopy, and mass spectrometry. The redox properties of peripheral and ... -
Novel phthalocyanines bearing 1,2,4 triazole substituents: Synthesis, characterization, photophysical and photochemical properties
Demirbaş, Ümit; Özçifçi, Zehra; Akçay, Hakkı Türker; Menteşe, Emre (Pergamon-Elsevier Science Ltd, 2020)4-(4,5-Diphenyl-4H-1,2,4-triazol-3-ylthio)phthalonitrile ( 3) and its non-peripherally tetra substituted zinc(II) phthalocyanine (4) and magnesium(II) phthalocyanine (5) derivatives were prepared. the novel compounds 3-5 ... -
Novel triazole bearing zinc(II) and magnesium(II) metallo-phthalocyanines: Synthesis, characterization, photophysical and photochemical properties
Akçay, Hakkı Türker; Pişkin, Mehmet; Demirbaş, Umit; Bayrak, Rıza; Durmuş, Mahmut; Menteşe, Emre; Kantekin, Halit (Elsevier Science Sa, 2013)The synthesis and characterization of novel tetrakis N-(3,5-dichlorophenyl)-5-methyl-3H-1,2,4-triazol-3-one (1) and N-(3,5-dichlorophenyl)-5-ethyl-3H-1,2,4-triazol-3-one (2) substituted phthalonitrile derivatives and their ... -
Novel triazole substituted phthalocyanines showing high singlet oxygen quantum yields
Demirbaş, Ümit; Bayrak, Rıza; Dilber, Gülsev; Menteşe, Emre; Akçay, Hakkı Türker (Elsevier, 2019)In this study, novel triazole peripherally substituted phthalocyanine zinc(II) complexes 3(a-d) were synthesized from four different phthalonitrile derivative and characterized by FT-IR NMR, MALDI-TOF, UV-Vis methods. ... -
The novel Zn(II) phthalocyanines: Synthesis, characterization, photochemical, DNA interaction and cytotoxic/phototoxic properties
Barut, Burak; Yalçın, Can Özgür; Demirbaş, Ümit; Akçay, Hakkı Türker; Kantekin, Halit; Özel, Arzu (Elsevier, 2020)In this study, peripherally and non-peripherally tetra substituted water soluble zinc(II) phthalocyanines (5a and 5b) were synthesized and characterized. Their photochemical and ct-DNA binding properties of them were ... -
Photophysical and photochemical study on novel axially chalcone substituted silicon (IV) phthalocyanines
Kahriman, Nuran; Ünver, Yasemin; Akçay, Hakkı Türker; Gülmez, Asuman Dakoğlu; Durmuş, Mahmut; Değirmencioğlu, İsmail (Elsevier, 2020)The novel axially chalcone bearing furan or thiphene groups substituted silicon (IV) phthalocyanine complexes were synthesized in this study. These novel phthalocyanines were characterized by general spectroscopic methods ... -
Photophysical and photochemical study on the tetra 4-isopropylbenzyloxy substituted phthalocyanines
Yalçın, İzzet; Yanık, Hülya; Akçay, Hakkı Türker; Değirmencioğlu, İsmail; Durmuş, Mahmut (Elsevier Science Bv, 2017)In this study, the novel peripherally tetra 4-isopropylbenzyloxy substituted metal-free (4) zinc(II) (5) and oxotitanium(IV) (6) phthalocyanine complexes were synthesized. Furthermore, the axially 4-isopropylbenzyloxy ... -
Preparation and characterization of the highly efficient tetraphenylimidazole substituted Phthalocyanine/ZnO composite and investigation of its effect on the photocatalytic degradation of Rhodamine B and 2,4,6-trichlorophenol
Karaoğlu, Kaan; Yüzüak, Gizem Durak; Yüzüak, Ercüment; Turan, Hanife; Akçay, Hakkı Türker (Elsevier, 2024)Growing concerns about industrial waste-induced environmental degradation have driven research towards sustainable solutions. Photocatalytic degradation, fueled by light and avoiding harmful chemicals, offers a promising ... -
Production and characterization of activated carbon foams with various activation agents for electrochemical double layer capacitors (EDLCs) applications
Özçifçi, Zehra; Emirik, Mustafa; Akçay, Hakkı Türker; Yumak, Tuğrul (Elsevier, 2024)Sucrose-based activated carbons were obtained by carbon foams with sugar and cobalt (II) nitrate as precursors, followed by using different chemical activation agents. The effect of Co(NO3)2 concentration, the carbonization ... -
Simultaneous separation and preconcentration of Cd(II), Co(II), and Ni(II) ions in environmental samples by carrier element-free coprecipitation method prior to their flame atomic absorption spectrometric determination
Duran, Celal; Özdeş, Duygu; Akçay, Hakkı Türker; Serencam, Hüseyin; Tüfekçi, Mehmet (Taylor & Francis Inc, 2015)In the present study, Cd(II), Co(II), and Ni(II) ions were separated and preconcentrated via carrier element-free coprecipitation (CEFC) method by using an organic coprecipitating agent, 1,2-bis-(2-tosyl ethoxy) benzene ... -
A spectroscopic study on new phthalonitrile derivative and its computational background: 4-[(4,5-Diphenyl-4H-1,2,4-triazol-3-yl)sulfanyl]benzene-phthalonitrile
Akçay, Hakkı Türker; Çoruh, Ufuk; Bayrak, Rıza; Menteşe, Emre; Vazquez Lopez, Ezequiel M. (Elsevier B.V., 2017)Heterocyclic phthalonitrile derivatives are important precursors in synthesis of new photoactive phthalocyanine compounds. In this study, novel phthalonitrile compound bearing triazole moiety was synthesized and characterized ... -
Substituted phthalocyanines and their electropolymerization properties
Bayrak, Rıza; Akçay, Hakkı Türker; Bıyıklıoğlu, Zekeriya; Değirmencioğlu, İsmail (Elsevier Science Sa, 2016)In this study, new metal-free and metallo-phthalocyanine complexes (Co, TiO) were synthesized using a piperazine-substituted phthalonitrile derivative. All proposed structures were supported by instrumental methods. ... -
Sucrose-based activated carbon foams as an electrode active material for supercapacitors
Özçifçi, Zehra; Özşanlı, Mehmet Ali; Akçay, Hakkı Türker; Yumuk, Tuğrul (Springer, 2022)Activated carbon foams (ACFs) have been successfully prepared by foaming sucrose with Zn nitrate and further chemical activation with H3PO4. The effect of the foaming agent (Zn) concentration and the activation temperature ... -
Synthesis and spectroscopic characterization of novel methoxy bridged benzimidazolyl-substituted phthalocyanines as potent inhibitors of urease
Akçay, Hakkı Türker; Menteşe, Emre; Sökmen, Bahar Bilgin (Pergamon-Elsevier Science Ltd, 2020)In this study, novel peripherally 4-[(1H-benzimidazol-1-yl)methoxy] substituted Zn(II) (3) Cu(II) (4) and Co(II) (5) phthalocyanines were prepared and their structures were characterized spectroscopically. the light ... -
Synthesis of some new Methoxy Bridged Benzimidazolyl-Substituted phthalocyanines as potent inhibitors of urease
Demirbaş, Ümit; Menteşe, Emre; Sökmen, Bahar Bilgin; Bayrak, Rıza; Akçay, Hakkı Türker (Elsevier Science Sa, 2018)In this study, the novel peripherally 4-[(2-methyl-1H-benzimidazol-1-yl)methoxy] substituted Zn(II) (3) Cu(II) (4), Co(II) (5) phthalocyanines were prepared and their structures were characterized spectro-scopically. the ... -
Synthesis, aggregation and spectroscopic studies of novel water soluble metal free, zinc, copper and magnesium phthalocyanines and investigation of their anti-bacterial properties
Bayrak, Rıza; Akçay, Hakkı Türker; Beriş, Fatih Şaban; Şahin, Ertan; Bayrak, Hacer; Demirbaş, Umit (Pergamon-Elsevier Science Ltd, 2014)In this study, novel phthalonitrile derivative (3) was synthesized by the reaction between 4-nitrophthalonitrile (2) and a triazole derivative (1) containing pyridine moiety. Crystal structure of compound (3) was characterized ... -
Synthesis, characterisation, photophysical and photochemical properties of free-base tetra-(5-chloro-2-(2,4-dichlorophenoxy) phenoxy)phthalocyanine and respective zinc(II) and lead(II) complexes
Demirbaş, Ümit; Pişkin, Mehmet; Akçay, Hakkı Türker; Barut, Burak; Durmuş, Mahmut; Kantekin, Halit (Elsevier Science Sa, 2017)In this study, novel peripherally tetra-(5-chloro-2-(2,4-dichlorophenoxy)phenol) substituted metal-free (4), zinc(II) (5) and lead(II) (6) phthalocyanine derivatives were synthesised. the novel phthalocyanines (4-6) were ...