Yazar "Bayrak, Rıza" için listeleme
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Computational studies on the anastrozole and letrozole, effective chemotherapy drugs against breast cancer
Akçay, Hakkı Türker; Bayrak, Rıza (Pergamon-Elsevier Science Ltd, 2014)In this paper, computational studies were carried out on anastrozole and letrozole, chemotherapy drugs used against breast cancer. Optimization and frequency calculations were performed at B3LYP/6-31G (d) basis set and ... -
Experimental and computational studies on 4-[(3,5-dimethyl-1H-pyrazol-1-yl) methoxy]phthalonitrile and synthesis and spectroscopic characterization of its novel phthalocyanine magnesium(ii) and tin(ii) metal complexes
Akçay, Hakkı Türker; Bayrak, Rıza; Şahin, Ertan; Karaoğlu, Kaan; Demirbaş, Ümit (Elsevier B.V., 2013)The molecular structure of the substituted phthalonitrile was analyzed crystallographically and compared with optimized geometric structure. The structural properties of the compound such as energy, vibrational frequency, ... -
New olefinic centred binuclear clamshell type phthalocyanines: Design, synthesis, structural characterisation, the stability and the change in the electron cloud at olefine-based symmetrical diphthalonitrile fragment by the combined application of UV-Vis electronic structure and theoretical methods
Değirmencioğlu, İsmail; Bayrak, Rıza; Er, Mustafa; Serbest, Kerim (Elsevier, 2011)The olefinic centred Schiff base (3) was obtained from the condensation of substituted dialdehyde (1) with 2-amino-4-methylphenol (2) in a 1:2 ratio. The diphthalonitrile derivative (5) was prepared by the reaction of ... -
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. ... -
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. ... -
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, characterization and investigation of electrochemical and spectroelectrochemical properties of peripherally tetra diethoxypropan substituted phthalocyanines
Akyüz, Duygu; Akçay, Hakkı Türker; Bayrak, Rıza (Wiley-V C H Verlag Gmbh, 2020)In this study novel peripherally tetra 1,3-diethoxy-2-propanol substituted Co(II), Cu(II), Mg(II), Ni(II) Zn(II) phthalocyanine derivatives were prepared. the characterization of the novel compounds was made by FT-IR,H-1-NMR, ... -
Synthesis, characterization, spectral and electrical properties of peripherally tetratriazole-substituted phthalocyanines and its metal complexes
Bayrak, Rıza; Karaoğlu, Kaan; Ünver, Yasemin; Sancak, Kemal; Dumludağ, Fatih; Değirmencioğlu, İsmail (Elsevier, 2012)The substituted [1,2,4]triazole 3 was obtained from the reaction between compound 1 and compound 2. Novel substituted phthalonitrile 5 was prepared by the substitution of the nitro group of 4-nitrophthalonitrile 4 with ... -
Synthesis, photophysical and photochemical properties of highly soluble phthalocyanines substituted with four 3,5-dimethylpyrazole-1-methoxy groups
Bayrak, Rıza; Akçay, Hakkı Türker; Durmuş, Mahmut; Değirmencioğlu, İsmail (Elsevier, 2011)The synthesis and characterization of new peripherally tetra-3,5- dimethylpyrazole-1-methoxy substituted metal-free (4), zinc (5), nickel (6), cobalt (7), copper (8) and lead (9) phthalocyanines are described for the first ...
