Journal of the Turkish Chemical Society Section A: Chemistry最新文献_第4页

Voltammetric performance of nanofiber structured over-oxidized poly(3,4-ethylenedioxythiophene) modified pencil graphite electrodes for dobutamine sensing 纳米纤维结构过氧化聚（3,4-亚乙二氧基噻吩）修饰铅笔形石墨电极的伏安性能，用于多巴酚胺传感

Journal of the Turkish Chemical Society Section A: Chemistry Pub Date : 2023-09-27 DOI: 10.18596/jotcsa.1306564

Ayşegül Özbek, L. Özcan

{"title":"Voltammetric performance of nanofiber structured over-oxidized poly(3,4-ethylenedioxythiophene) modified pencil graphite electrodes for dobutamine sensing","authors":"Ayşegül Özbek, L. Özcan","doi":"10.18596/jotcsa.1306564","DOIUrl":"https://doi.org/10.18596/jotcsa.1306564","url":null,"abstract":"A modified electrode was developed for the electrochemical sensing of dobutamine (DBT), one of the catecholamines. For this modification process, pencil graphite electrodes (PGE) were modified with over-oxidized nanofiber structured poly (3,4-ethylenedioxythiophene) (PGE/OPEDOTNF) by electropolymerization. The electrochemical performance of PGE/OPEDOTNF was evaluated by cyclic and differential pulse voltammetry. In addition, the performances of non-nanofiber PEDOT-modified PGE electrodes were also examined for comparison. The characterization of the modified electrodes was carried out by scanning electron microscopy and electrochemical methods. The signal of the modified electrodes was observed in a linear range of 0.1-2.0 µM against DBT using the differential pulse voltammetry method. The limit of detection and quantification are calculated as 0.026 µM and 0.086 µM, respectively. The effect of the interfering species was examined. It has been shown that DBT can be detected sensitively and selectively using pencil graphite electrodes modified with nanofiber-structured poly(3,4-ethylenedioxythiophene). The repeatability of PGE/OPEDOTNF electrodes was found to be 5.2%. PGE/OPEDOTNF electrodes remained stable for 15 days without losing their electrochemical activity.","PeriodicalId":17299,"journal":{"name":"Journal of the Turkish Chemical Society Section A: Chemistry","volume":"85 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139335577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

DFT and Electrochemical Study of Novel Green Corrosion Inhibitor (Pyrantrin) for 1100-H14 Aluminum Corrosion Remediation in 1 M H2SO4 Acidic Environment 新型绿色缓蚀剂（嘧啶）在 1 M H2SO4 酸性环境中修复 1100-H14 铝腐蚀的 DFT 和电化学研究

Journal of the Turkish Chemical Society Section A: Chemistry Pub Date : 2023-08-31 DOI: 10.18596/jotcsa.1234194

B. Ugi

引用次数: 0

Carbon Paste Electrode Modified by Dibenzo 18-crown-6 for the Determination of Pb in Carrot Using Differential Pulse Voltammetry 二苯并18-冠-6修饰碳糊电极差分脉冲伏安法测定胡萝卜中的铅

Journal of the Turkish Chemical Society Section A: Chemistry Pub Date : 2023-08-17 DOI: 10.18596/jotcsa.1120078

Irdhawati Irdhawati, Ayu Jyostosya Yotirani Arya Wijana, Emmy Sahara, Manuntun Manurung

{"title":"Carbon Paste Electrode Modified by Dibenzo 18-crown-6 for the Determination of Pb in Carrot Using Differential Pulse Voltammetry","authors":"Irdhawati Irdhawati, Ayu Jyostosya Yotirani Arya Wijana, Emmy Sahara, Manuntun Manurung","doi":"10.18596/jotcsa.1120078","DOIUrl":"https://doi.org/10.18596/jotcsa.1120078","url":null,"abstract":"In this research, the modification of carbon paste electrode (CPE) using dibenzo 18-crown-6 was carried out to detect Pb level in carrot. The purpose of this electrode modification is to increase the sensitivity of the measurement. The optimized parameters were scan rate, composition of dibenzo 18-crown-6 in carbon paste, and supporting electrolyte. Measurements were validated by determining the linear concentration range, detection limit (LoD), quantification limit (LoQ), repeatability, selectivity, and recovery. At the best measurement conditions, the modified CPE (CPE-Dbc) was applied to determine Pb in carrot. The optimum measurements conditions were obtained the optimum concentration of crown ether in carbon paste was 0.8%, the scan rate using CPE at 15 mV/s, increased to 20 mV/s, and H2SO4 solution as supporting electrolyte. The linear concentration was found in the range of 5-100 µg/L using CPE and became wider to 5-2000 µg/L using CPE-Dbc. The values of LoD and LoQ measurement using CPE were 0,3575 µg/L and 0,3583 µg/L, and decreased to 0,1265 µg/L and 0,1266 µg/L using CPE-Dbc. CPE and CPE-Dbc had good precision with Horwitz ratio values were 0,2231 and 0,2183, which is smaller than two. The percentage of recovery of Pb in the mixture of standard and sample solutions was (88,97 ± 2,76)%. The presence of Cu, Cd and Na in the solution did not interfere the measurement of Pb. The concentration of Pb in carrot sample was (1,8423 ± 0,0002) mg/kg, which was higher than the acceptable concentration according to SNI No. 7387:2009, which is 0,5 mg/kg.","PeriodicalId":17299,"journal":{"name":"Journal of the Turkish Chemical Society Section A: Chemistry","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79378379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis, Antiproliferative Activity and In Silico Studies of Chalcones Derived From 4-(Imidazole-1-yl)Acetophenone 4-(咪唑-1-基)苯乙酮衍生查尔酮的合成、抗增殖活性及硅研究

Journal of the Turkish Chemical Society Section A: Chemistry Pub Date : 2023-08-05 DOI: 10.18596/jotcsa.1313595

Bedriye Seda KURŞUN AKTAR, Abdulraheem Mustafa Alkarabash, A. ŞAHİN YAĞLIOĞLU, E. E. Oruç-Emre

{"title":"Synthesis, Antiproliferative Activity and In Silico Studies of Chalcones Derived From 4-(Imidazole-1-yl)Acetophenone","authors":"Bedriye Seda KURŞUN AKTAR, Abdulraheem Mustafa Alkarabash, A. ŞAHİN YAĞLIOĞLU, E. E. Oruç-Emre","doi":"10.18596/jotcsa.1313595","DOIUrl":"https://doi.org/10.18596/jotcsa.1313595","url":null,"abstract":"In this study, the synthesis of chalcone compounds (1-11) derived from 4-(imidazol-1-yl)acetophenone and the structure determination of these compounds by various spectroscopic methods were carried out. The anticancer activities of compounds 1-11 were examined against HeLa and PC-3 cancer cells at four different concentrations (100, 50, 25, and 5 µM) using the BrdU ELISA assay. It was determined that all molecules except compounds 1 and 6 in HeLa cancer cells and compounds 2 and 8 against PC-3 cancer cells were more active against HeLa and PC-3 than the standard drug 5-fluorouracil (5-FU). The best activity against PC-3 cancer cells was compound 4 (IC50: 1.39±0.00 µM). In addition, compound 11 (IC50: 1.58±0.01 µM) was found to have the highest activity against HeLa cancer cells. Compound 4 against PC-3 cancer cell and compound 11 against HeLa cancer cell displayed cell selective activity. The ADME properties and drug similarities of the molecules 1-11 using the SwissADME software were investigated. According to these properties, compounds 1-11 were found to obey Lipinski rules.","PeriodicalId":17299,"journal":{"name":"Journal of the Turkish Chemical Society Section A: Chemistry","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77252864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

3- and 4-Arm Star Polymers (PEG3 and PEG4) via Metal-Free Azide-Alkyne Click Reaction 3臂和4臂星形聚合物(pegg3和PEG4)的无金属叠氮-炔点击反应

Journal of the Turkish Chemical Society Section A: Chemistry Pub Date : 2023-08-01 DOI: 10.18596/jotcsa.1324025

U. Günay

引用次数: 0

Synthesis and Photodegradation of Bi2O3 and Pb-Bi2O3 Nanoparticles and Their Kinetic Study Bi2O3 和 Pb-Bi2O3 纳米粒子的合成、光降解及其动力学研究

Journal of the Turkish Chemical Society Section A: Chemistry Pub Date : 2023-07-25 DOI: 10.18596/jotcsa.1164065

Farzana Hai̇der, Zakia Gul, Kafeel AHMAD KHAN

{"title":"Synthesis and Photodegradation of Bi2O3 and Pb-Bi2O3 Nanoparticles and Their Kinetic Study","authors":"Farzana Hai̇der, Zakia Gul, Kafeel AHMAD KHAN","doi":"10.18596/jotcsa.1164065","DOIUrl":"https://doi.org/10.18596/jotcsa.1164065","url":null,"abstract":"The green synthesis method synthesized the bismuth oxide and lead-doped bismuth oxide nanoparticles using Ferula Asafoetida leaves extract. The lead-doped bismuth oxide showed greater degradation efficiency than undoped bismuth oxide. This greater efficiency was due to decreases in the band gap energy between the valence band and the conduction band of the metal oxide and reduced the chances of electron-hole pair recombination with the metal oxide catalyst. The synthesized nanoparticles were characterized by TGA, SEM, FT-IR, EDX, XRD, and UV- visible Spectrometer. XRD diffraction of Bi2O3 nanoparticles reflected a strong and sharp peak at 32.8˚ shows that Bi2O3 nanoparticles are in crystalline phase. The crystallite size of Bi2O3 nanoparticles is 13.433 nm, and Pb-doped Bi2O3 is 9.6 nm, calculated from the Debye-Scherrer equation. The synthesized Bi2O3 nanoparticles are round in shape with average size of ~ 90-100 nm While Pb doped Bi2O3 is ~ 75 f- 100 nm. The EDX spectra showed no additional peak for any impurities. The degradation rate of Malachite Green dye (MG) increased with the increase in contact time and temperature, while it decreased with increasing dye initial concentration and pH. Initially, the degradation efficiency of the bismuth oxide catalyst is increased with increasing catalyst amount, but after a certain amount of catalyst, it started decreasing as the catalyst amount was further increased. The irradiation time on photodegradation is deliberate, keeping other parameters steady at catalyst quantity 0.01 g at specific reaction conditions. Moreover, the dye showed an increase in degradation at 50 oC. The utmost degradation of 92% was observed for lead-doped bismuth oxide (Bi2O3) and 76% for undoped bismuth oxide (Bi2O3).","PeriodicalId":17299,"journal":{"name":"Journal of the Turkish Chemical Society Section A: Chemistry","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139355334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Hydration Processes in HCl and Aqueous Salt Solutions 盐酸和盐水溶液中的水化过程

Journal of the Turkish Chemical Society Section A: Chemistry Pub Date : 2023-07-21 DOI: 10.18596/jotcsa.1201298

Gunel Shahbazova, E. A. Masimov

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3-Hydroxypyridine and 3-(Hydroxymethyl)pyridine in the Synthesis of Salts of Aryldithiophosphonic Acids on the Basis of Monoterpenyl Alcohols 基于单萜醇合成芳基巯基膦酸盐中的 3-羟基吡啶和 3-(羟甲基)吡啶

Journal of the Turkish Chemical Society Section A: Chemistry Pub Date : 2023-07-20 DOI: 10.18596/jotcsa.1290931

I. Nizamov, A. Yakovlev, I. Nizamov, M. Shulaeva

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Eco-friendly dyeing of fabric and wool yarn samples with Morus nigra leaf extracts 用黑桑叶提取物对织物和毛纱样品进行环保染色

Journal of the Turkish Chemical Society Section A: Chemistry Pub Date : 2023-07-12 DOI: 10.18596/jotcsa.1286585

Adem Önal, Oguz Özbek, Pakize Düzgün, Sama Nached

引用次数: 0

Improvement of corrosion resistance for brass in 3.5% NaCl media by using 4- fluorophenyl-2, 5-dithiohydrazodicarbonamide 4-氟苯基- 2,5 -二硫代肼二酰胺提高黄铜在3.5% NaCl介质中的耐蚀性

Journal of the Turkish Chemical Society Section A: Chemistry Pub Date : 2023-07-12 DOI: 10.18596/jotcsa.1268115

Mothana Ghazi Kadhim AlFalah, Ahmed Elid, Amgad Ahmed ABDO ALİ, E. Kamberli, Bahar Nazli, Sevilay Koyun, Alihan Tosun, Muhammed Kadi̇rli̇oğlu, Fatma Elkassum, Saleh Quddus Saleh, Abdulrahman Obied, Fatma Kandemi̇rli̇

{"title":"Improvement of corrosion resistance for brass in 3.5% NaCl media by using 4- fluorophenyl-2, 5-dithiohydrazodicarbonamide","authors":"Mothana Ghazi Kadhim AlFalah, Ahmed Elid, Amgad Ahmed ABDO ALİ, E. Kamberli, Bahar Nazli, Sevilay Koyun, Alihan Tosun, Muhammed Kadi̇rli̇oğlu, Fatma Elkassum, Saleh Quddus Saleh, Abdulrahman Obied, Fatma Kandemi̇rli̇","doi":"10.18596/jotcsa.1268115","DOIUrl":"https://doi.org/10.18596/jotcsa.1268115","url":null,"abstract":"Corrosion poses a significant challenge for numerous industries. The use of corrosion inhibitors is essential within these industries. The efficacy of environmentally friendly corrosion inhibitors should remain high even when used at low concentrations. In the present study, the compound 4- fluorophenyl-2,5- dithiohydrazodicarbonamide (FTSC) was used as a corrosion inhibitor for brass in 3.5% NaCl solution. The inhibitor efficiency was determined by using a series of electrochemical techniques such as open circuit potential (OCP), potential dynamic polarisation (PDP), linear polarisation resistance (LPR), and electrochemical impedance spectroscopy (EIS). All experimental tests have been done in stagnant conditions. The findings of the experiments revealed that the compound FTSC looked to be of the cathodic type. Furthermore, the maximum inhibitor efficiency was reached at 98.28% at 1 × 10-3 and at an immersion time of 1 h. The current density was reduced from 16.5 to 0.284 A.cm-2. The adsorption of compound on the brass surface in 3.5% NaCl solution obeyed the Langmuir isotherm with a low negative value of the standard Gibbs free energy of adsorption (-33.8 kJ/mol ΔGads (chemisorption and physisorption). The results confirmed that the compound FTSC can be used as a corrosion inhibitor for brass in 3.5% NaCl.","PeriodicalId":17299,"journal":{"name":"Journal of the Turkish Chemical Society Section A: Chemistry","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80695901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0