16 آذر 1400

اسماعیل تماری

مرتبه علمی:
نشانی: دانشکده علوم و فناوری نانو و زیستی - گروه شیمی
تحصیلات: شیمی تجزیه
تلفن:
دانشکده: دانشکده علوم و فناوری نانو و زیستی

مشخصات پژوهش

عنوان Estimation of Heterogeneous Rate Constants of Reaction of Electrochemically Generated o-Benzoquinones with Various Nucleophiles Containing Thiol Group
نوع پژوهش مقالات در نشریات
کلیدواژه‌ها
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مجله INTERNATIONAL JOURNAL OF CHEMICAL KINETICS
شناسه DOI
پژوهشگران لیدا فتوحی (نفر اول) ، اسماعیل تماری (نفر دوم) ، سمانه اسدی (نفر سوم) ، مجید هروی (نفر چهارم) ، داود نعمت الهی (نفر پنجم)

چکیده

The reaction of o-benzoquinone derived by the oxidation of catechols (1a–c) with some nucleophiles containing thiol group (2a–f) has been studied in various conditions, such as pH, nucleophile concentration, and scan rate, using cyclic voltammetry. In various conditions, based on an EC electrochemical mechanism (“E” represents an electron transfer at the electrode surface and “C” represents a homogeneous chemical reaction), the observed homogeneous rate constants (kobs ) were estimated by comparison of the experimental cyclic voltammetric responses with the digital simulated results for each of the nucleophile. The results show that the magnitude of kobs is dependent on the nature of the substituted group on the catechol ring and nucleophilicity of nucleophile.