Yazar "Demirbaş, Ümit" için listeleme
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Synthesis, characterization and investigation of electrochemical and spectroelectrochemical properties of peripherally tetra 4-phenylthiazole-2-thiol substituted metal-free, zinc(II), copper(II) and cobalt(II) phthalocyanines
Demirbaş, Ümit; Akçay, Hakkı Türker; Koca, Atif; Kantekin, Halit (Elsevier Science Bv, 2017)In this study novel peripherally tetra 4-phenylthiazole-2-thiol substituted metal-free phthalocyanine (4) and its zinc(II) (5), copper(II) (6) and cobalt(II) (7) derivatives were synthesized and characterized by a combination ... -
Synthesis, characterization, electrochemical and spectroelectrochemical properties of novel peripherally tetra-1,2,4-triazole substituted phthalocyanines
Demirbaş, Ümit; Kobak, Rabia Zeynep Uslu; Akçay, Hakkı Türker; Ünlüer, Dilek; Koca, Atıf; Çelik, Fatih; Kantekin, Halit (Elsevier Science Sa, 2016)The synthesis and characterization of novel 1,2,4-triazole derivative (3), nitrile compound (5) and peripherally tetra 1,2,4-triazole substituted metal-free (6), zinc(II) (7), nickel(II) (8), cobalt(II) (7), lead(II) (9) ... -
Synthesis, characterization, photophysical and photochemical properties of peripherally tetra benzodioxane substituted metal-free phthalocyanine and its zinc(II) and magnesium(II) derivatives
Demirbaş, Ümit; Ömeroğlu, İpek; Akçay, Hakkı Türker; Durmuş, Mahmut; Kantekin, Halit (Elsevier, 2021)The phthalonitrile (3) including 2-(methoxymethyl)-2,3-dihydro-1,4-benzodioxane substituent and peripherally tetra substituted metal-free (4), zinc(II) (5) and magnesium(II) (6) phthalocyanines were synthesized. the ... -
Synthesis, characterization, photophysical and photochemical properties of peripherally tetra-1,2,4-triazol-3-ylthio substituted metal-free phthalocyanine and its zinc(II) and lead(II) derivatives
Demirbaş, Ümit; Yanık, Hülya; Akçay, Hakkı Türker; Durmuş, Mahmut; Bekircan, Olcay; Kantekin, Halit (Taylor & Francis Ltd., 2022)Phthalonitrile (3) including 4-(4-fluorophenyl)-5-(4-methoxyphenyl)-4H-1,2,4-triazole-3-thio substituent and its peripherally tetra substituted metal-free (4), zinc(II) (5) and lead(II) (6) phthalocyanine derivatives were ... -
Synthesis, electrochemical and in-situ spectroelectrochemical properties of 1,2,4 triazole containing metallo-phthalocyanines
Akyüz, Duygu; Demirbaş, Ümit; Koca, Atıf; Akçay, Hakkı Türker; Menteşe, Emre; Kantekin, Halit (Springer, 2021)Novel 4-(5-(pyridin-3-yl)-4-p-tolyl-4H-1,2,4-triazol-3-ylthio) substituted phthalonitrile (3) and it's zinc(II) (4) and copper(II) (5) metallo-phthalocyanine derivatives were synthesized. Spectroscopic and electrochemical ... -
Widely unable dual-wavelength operation of Tm:YLF, Tm:LuAG, and Tm:YAG lasers using off-surface optic axis birefringent filters
Beyatlı, Ersen; Demirbaş, Ümit (Optical Soc Amer, 2018)In this work, we have demonstrated dual-wavelength continuous-wave laser operation in diode-end-pumped Tm:YLF, Tm:LuAG, and Tm:YAG lasers. A 3-mm-thick quartz birefringent filter with an optical axis 45 degrees to the ... -
Widely-tunable dual-wavelength Tm:YLF, Tm:LuAG, and Tm:YAG lasers
Beyatlı, Ersen; Demirbaş, Ümit (Institute of Electrical and Electronics Engineers Inc., 2019)Dual-wavelength operation of lasers are attractive for many applications such as coherent terahertz wave generation, ultrahigh pulse repetition rate creation by optical beating, and laser ranging. Several methods could be ...