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Articles 1 - 4 of 4
Full-Text Articles in Physical Sciences and Mathematics
Synthesis And Antioxidant, Aggregation, And Electronic Properties Of6-Tert-Butyl-1,4-Benzodioxine Substituted Phthalocyanines, Mehmet Sali̇h Ağirtaş, Beyza Cabi̇r, Selçuk Gümüş, Sadi̇n Özdemi̇r, Abdurrahman Dündar
Synthesis And Antioxidant, Aggregation, And Electronic Properties Of6-Tert-Butyl-1,4-Benzodioxine Substituted Phthalocyanines, Mehmet Sali̇h Ağirtaş, Beyza Cabi̇r, Selçuk Gümüş, Sadi̇n Özdemi̇r, Abdurrahman Dündar
Turkish Journal of Chemistry
As a starting material, 7-tert-butyldibenzo [b,e] [1,4] dioxine-2,3-dicarbonitrile was prepared by the reac- tion of 4-tert-butylcatechol with 4,5-dichlorophthalonitrile. Metallophthalocyanine complexes 4-7 were obtained by cyclotetramerization of 7-tert-butyldibenzo [b,e] [1,4] dioxine-2,3-dicarbonitrile. All compounds were characterized by elemental analysis and other spectroscopic methods (IR, UV/Vis, and $^{1}$H NMR). Phthalocyanine compounds remained nonaggregated in tetrahydrofuran at the studied concentration ranges. Metallophthalocyanines 4-7 were tested for their antioxidant activities. The antioxidant activity processes included evaluation of radical-scavenging activity, chelat- ing activity, and reducing power. These compounds were compared to standard antioxidant ascorbic acid. The electronic data of the new compounds were obtained by computational …
Synthesis, Characterization, And Evaluation Of Toxicity Of Quaternary Ammonium Chlorides Of Glucose-Based Este, Anna Parus, Grzegorz Framski
Synthesis, Characterization, And Evaluation Of Toxicity Of Quaternary Ammonium Chlorides Of Glucose-Based Este, Anna Parus, Grzegorz Framski
Turkish Journal of Chemistry
This study presents the synthesis of glucose-based surfactants including quaternary ammonium salts. Their surface properties and influence on the soil environment were investigated. The synthesized quaternary ammonium chlorides of glucose-based ester exhibited good surface tension reduction properties and formed stable foam in contact with water. The results showed that quaternary ester ammonium salts affect the activation of metals (nickel and cadmium) from the soil matrix after their introduction into the soil environment. This phenomenon can increase the bioavailability of these metals. The introduction of glucose surfactants to the soil increased microorganism activity, which may indicate that these compounds were used …
Synthesis And Characterization Of Novel Unsymmetrical Phthalocyanine/Tio$_{2}$ Composites And Their Evaluation As Photocatalysts For Degradation Of 4-Chlorophenol Under Visible Light, Yunus Alp Sütcüler, Görkem Gezek, Yaghub Mahmi̇ani̇, Altuğ Mert Sevi̇m
Synthesis And Characterization Of Novel Unsymmetrical Phthalocyanine/Tio$_{2}$ Composites And Their Evaluation As Photocatalysts For Degradation Of 4-Chlorophenol Under Visible Light, Yunus Alp Sütcüler, Görkem Gezek, Yaghub Mahmi̇ani̇, Altuğ Mert Sevi̇m
Turkish Journal of Chemistry
We prepared novel unsymmetrical A$_{3}$B-type zinc and cobalt phthalocyanines bearing monocarboxylic acid groups on peripheral positions using statistical condensation method, especially designed to anchor on the TiO$_{2}$ semiconductor surface. The novel complexes were anchored on TiO$_{2}$ semiconductor to prepare effective dye sensitized photoactive composites as heterogeneous catalysts. The results indicated that modified TiO$_{2}$ nanocrystals possessed only the anatase phase and MPc-TiO$_{2}$ photocatalysts with loading amount of dye ca. 8.27 $\mu $mol/g TiO$_{2}$ exhibit strong visible light absorption. Photocatalytic degradation of 4-chlorophenol (4-CP) under illumination with visible light ($\lambda >$ 400 nm) was tested with the composites prepared. The degradation profile …
Recent Synthetic Methodologies For Pyrimidine And Its Derivatives, Farhat Ibraheem, Furqan Ahmad Saddique, Sana Aslam, Asim Mansha, Tahir Farooq, Matloob Ahmad
Recent Synthetic Methodologies For Pyrimidine And Its Derivatives, Farhat Ibraheem, Furqan Ahmad Saddique, Sana Aslam, Asim Mansha, Tahir Farooq, Matloob Ahmad
Turkish Journal of Chemistry
Pyrimidine derivatives are well known due to their remarkable pharmacological potential in various fields of science, and they are also present in some natural substances like DNA and RNA. These scaffolds manifest diversified biological activities such as antimicrobial, antiinflammatory, anti-HIV, antitubercular, antitumor, antineoplastic, and antimalarial. A pyrimidine ring is constructed when chalcones, amidines, guanidine, nitriles, isocyanates, urea, thiourea, and aminopyrazoles undergo condensation, coupling, or cyclization reactions. In this context, the present review illustrates a variety of novel and efficient synthetic approaches towards the synthesis of pyrimidine and its derivatives that were reported recently.