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Full-Text Articles in Physical Sciences and Mathematics
A Quartz Crystal Microbalance Study Of The Adsorption Of Benzene And Acetone Vapors Onto Coumarin-Substituted Manganese Phthalocyanine Film, Bi̇rsel Can Ömür, Ahmet Altindal
A Quartz Crystal Microbalance Study Of The Adsorption Of Benzene And Acetone Vapors Onto Coumarin-Substituted Manganese Phthalocyanine Film, Bi̇rsel Can Ömür, Ahmet Altindal
Turkish Journal of Physics
A novel coumarin-substituted manganese phthalocyanine (5) was successfully synthesized and used as sensing element for benzene and acetone vapor detection. The effects of water vapor on the benzene and acetone vapor-sensing properties and adsorption isotherms on thin film of 5 were also studied. Our preliminary results indicated that the presence of humidity modifies the baseline frequency but not the sensitivity of the sensor toward benzene and acetone vapors. Two isotherm models, Langmuir and Jovanovic isotherms, were selected to describe the adsorption process. Linear regression analysis, which is the most basic and commonly used predictive analysis method, was used to estimate …
Investigation Of The Photophysical And Photochemical Behavior Of Substituted Zinc Phthalocyanines And Their Water-Soluble Quaternized Derivatives, Gülsev Di̇lber, Mahmut Durmuş, Hali̇t Kanteki̇n
Investigation Of The Photophysical And Photochemical Behavior Of Substituted Zinc Phthalocyanines And Their Water-Soluble Quaternized Derivatives, Gülsev Di̇lber, Mahmut Durmuş, Hali̇t Kanteki̇n
Turkish Journal of Chemistry
New nonperipherally and peripherally tetrasubstituted zinc(II) phthalocyanine complexes containing 1-benzylpiperidin-4-ol groups and their quaternized derivatives are reported in this work. These complexes were characterized successfully and their photophysical and photochemical properties were studied. These properties were determined in dimethylsulfoxide for all studied complexes and in water and water $+$ Triton X-100 solutions for ionic Zn(II) phthalocyanines. All studied zinc(II) phthalocyanine complexes generated high singlet oxygen, especially in dimethylsulfoxide, and these properties make them potential photosensitizers for use in the photodynamic therapy of cancer. The effects of the position and quaternization of the substituents on the photophysical and photochemical properties were …
Investigation Of Photochemical And Photophysical Properties Of Novel Silicon(Iv) Phthalocyanines And Their $\Mu $-Oxo Dimers, Ömer Güngör, Mahmut Durmuş, Vefa Ahsen
Investigation Of Photochemical And Photophysical Properties Of Novel Silicon(Iv) Phthalocyanines And Their $\Mu $-Oxo Dimers, Ömer Güngör, Mahmut Durmuş, Vefa Ahsen
Turkish Journal of Chemistry
The synthesis and characterization of novel tetraalkylthio (SC$_{6}$H$_{13}$ or SC$_{12}$H$_{25})$ substituted $\mu $-oxo silicon(IV) phthalocyanines (3a and 3b) and their $\mu$-oxo derivatives (4a and 4b) were described in this study. These silicon(IV) phthalocyanines were characterized using different spectroscopic techniques such as UV-Vis, $^{1}$H NMR, FT-IR, and mass and elemental analysis, as well. Furthermore, the photophysical (fluorescence quantum yields and lifetimes) and photochemical (singlet oxygen generation) properties of the newly synthesized silicon(IV) phthalocyanines (3a, 3b, 4a, and 4b) were investigated in dimethylformamide solution. The absorption and fluorescence excitation wavelengths of the studied silicon(IV) phthalocyanines were blue-shifted when they converted to their …