Journals / Turkish Journal of Analytical Chemistry / 2026 / Cilt: 8 Sayı: 2

Electrochemical investigation of buclizine: First mechanistic study of proton-coupled electron transfer at a glassy carbon electrode

Buklizinin elektrokimyasal incelemesi: Camsı karbon elektrot üzerinde elektron-proton çifti transferinin ilk mekanistik çalışması

Ümran Sofu(SULEYMAN DEMIREL UNIVERSITY, FACULTY OF PHARMACY)0000-0001-6563-8441
Gökçe Öztürk(KARADENIZ TECHNICAL UNIVERSITY, FACULTY OF PHARMACY)0000-0002-3332-7136
Zehra Üstün(SULEYMAN DEMIREL UNIVERSITY, ATAYALVAC VOCATIONAL SCHOOL OF HEALTH SCIENCES)0000-0002-7061-6279
Ebru Çubuk Demiralay(SULEYMAN DEMIREL UNIVERSITY, FACULTY OF PHARMACY)0000-0002-6270-7509
Pages
94–102
Publication Date
2026-05-31
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The findings in this article provide the first experimental information on the electrochemical oxidation pathway of buclizine, offering important data for understanding the chemical stability and pharmaceutical quality of the compound.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:This study reports, for the first time, the electrochemical oxidation behavior of buclizine at a glassy carbon electrode using cyclic and differential pulse voltammetry.
📊
Key Findings & Data:The effects of solvent composition, methanol content, pH, supporting electrolyte, and scan rate on the oxidation process were systematically examined.
💡
Conclusion & Impact:The findings in this article provide the first experimental information on the electrochemical oxidation pathway of buclizine, offering important data for understanding the chemical stability and pharmaceutical quality of the compound.
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:Buklizin · Camsı karbon elektrot · Geri dönüşümsüz süreç

Abstract

This study reports, for the first time, the electrochemical oxidation behavior of buclizine at a glassy carbon electrode using cyclic and differential pulse voltammetry. The effects of solvent composition, methanol content, pH, supporting electrolyte, and scan rate on the oxidation process were systematically examined. Optimal electrochemical signals were obtained in Britton-Robinson buffer at pH 4.0 containing 10% (v/v) methanol. The oxidation peak potential shifted toward more negative values with increasing pH, with slopes close to 59 mV/pH in both voltammetric techniques, indicating that the oxidation involves equal numbers of electrons and protons. Scan rate studies combined with Laviron analysis confirmed that the oxidation proceeds via a single-electron transfer. Based on the experimental findings, an irreversible proton-coupled electron transfer mechanism involving one electron and one proton (1 e⁻ / 1 H⁺) was proposed. The findings in this article provide the first experimental information on the electrochemical oxidation pathway of buclizine, offering important data for understanding the chemical stability and pharmaceutical quality of the compound.

Özet

Bu çalışmada, buklizinin camsı karbon elektrot üzerinde döngülü voltametri ve diferansiyel puls voltametrisi kullanılarak elektrokimyasal oksidasyon davranışı ilk kez rapor edilmiştir. Oksidasyon süreci üzerine çözücü bileşimi, metanol içeriği, pH, destek elektrolit ve tarama hızının etkileri sistematik olarak incelenmiştir. En uygun elektrokimyasal sinyaller, %10 (v/v) metanol içeren pH 4.0 Britton–Robinson tamponunda elde edilmiştir. Oksidasyon pik potansiyelinin, artan pH ile daha negatif değerlere kaydığı ve her iki voltametrik teknikte elde edilen eğimlerin yaklaşık 59 mV/pH olduğu belirlenmiştir; bu durum, oksidasyonun eşit sayıda elektron ve proton içeren bir süreç olduğunu göstermektedir. Tarama hızı çalışmaları ile birlikte uygulanan Laviron analizi, oksidasyonun tek elektronlu bir transfer mekanizması üzerinden gerçekleştiğini doğrulamıştır. Deneysel bulgular temel alınarak, bir elektron ve bir proton (1 e⁻ / 1 H⁺) içeren geri dönüşümsüz elektron-proton çifti transferi mekanizması önerilmiştir. Bu makalede sunulan bulgular, buklizinin elektrokimyasal oksidasyon yolağına ilişkin ilk deneysel verileri sağlayarak, bileşiğin kimyasal kararlılığının ve farmasötik kalitesinin anlaşılmasına yönelik önemli bilgiler sunmaktadır.

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Cite This Article

Sofu, Ü., Öztürk, G., Üstün, Z., Demiralay, E. Ç. (2026). Electrochemical investigation of buclizine: First mechanistic study of proton-coupled electron transfer at a glassy carbon electrode. Turkish Journal of Analytical Chemistry, Cilt: 8 Sayı: 2, 94–102. https://doi.org/10.51435/turkjac.1886767

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