Surface pKa determination of benzoic acid modified gold electrode by electrochemical and contact angle measurement methods

Ali Solak; Gamze Abacıoğlu; Zafer Üstündağ; Serkan Demirci; Aybüke Turan; Haslet Ekşi; Remziye Güzel; Sebahattin Balcı

EN TR

Surface pKa determination of benzoic acid modified gold electrode by electrochemical and contact angle measurement methods

Abstract

pKa values of the organic surfaces were determined with ionizable carboxylic acid groups, obtained by the modification of gold electrode by reduction of p-benzoic acid diazonium tetrafluoroborate and oxidation of p-aminobenzoic acid. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) techniques were used in the surface pKa determination, by exploiting the barrier effect arising from the charged nature of the surface against the electrochemistry of Fe(CN)64-/3- redox probe. Contact angle measurement (CAM) technique was also used to compare the accuracy of the surface pKa values acquired by electrochemical methods. pKa values for Au-BA were found as 2.938±0.283, 4.128 ± 0.342 and 4.251±0.089 by CV, EIS, and CAM, respectively : while the values are 4.084±0.101 5.326±0.323 and 5.102±0.147 for Au-NHBA.

Keywords

Surface pKa of benzoic acid, modified gold electrode, cyclic voltammetry, electrochemical impedance spectroscopy, contact angle measurement

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Details

Primary Language

English

Subjects

-

Journal Section

-

Authors

Ali Solak This is me

Gamze Abacıoğlu This is me

Zafer Üstündağ This is me

Serkan Demirci

Aybüke Turan This is me

Haslet Ekşi This is me

Remziye Güzel This is me

Sebahattin Balcı This is me

Publication Date

May 1, 2014

Submission Date

May 1, 2014

Acceptance Date

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Published in Issue

Year 2014 Volume: 2 Number: 1

IZ

https://izlik.org/JA22DF65FH

APA

Solak, A., Abacıoğlu, G., Üstündağ, Z., Demirci, S., Turan, A., Ekşi, H., Güzel, R., & Balcı, S. (2014). Surface pKa determination of benzoic acid modified gold electrode by electrochemical and contact angle measurement methods. MANAS Journal of Engineering, 2(1), 3-15. https://izlik.org/JA22DF65FH

AMA

1.Solak A, Abacıoğlu G, Üstündağ Z, et al. Surface pKa determination of benzoic acid modified gold electrode by electrochemical and contact angle measurement methods. MJEN. 2014;2(1):3-15. https://izlik.org/JA22DF65FH

Chicago

Solak, Ali, Gamze Abacıoğlu, Zafer Üstündağ, et al. 2014. “Surface PKa Determination of Benzoic Acid Modified Gold Electrode by Electrochemical and Contact Angle Measurement Methods”. MANAS Journal of Engineering 2 (1): 3-15. https://izlik.org/JA22DF65FH.

EndNote

Solak A, Abacıoğlu G, Üstündağ Z, Demirci S, Turan A, Ekşi H, Güzel R, Balcı S (May 1, 2014) Surface pKa determination of benzoic acid modified gold electrode by electrochemical and contact angle measurement methods. MANAS Journal of Engineering 2 1 3–15.

IEEE

[1]A. Solak et al., “Surface pKa determination of benzoic acid modified gold electrode by electrochemical and contact angle measurement methods”, MJEN, vol. 2, no. 1, pp. 3–15, May 2014, [Online]. Available: https://izlik.org/JA22DF65FH

ISNAD

Solak, Ali - Abacıoğlu, Gamze - Üstündağ, Zafer - Demirci, Serkan - Turan, Aybüke - Ekşi, Haslet - Güzel, Remziye - Balcı, Sebahattin. “Surface PKa Determination of Benzoic Acid Modified Gold Electrode by Electrochemical and Contact Angle Measurement Methods”. MANAS Journal of Engineering 2/1 (May 1, 2014): 3-15. https://izlik.org/JA22DF65FH.

JAMA

1.Solak A, Abacıoğlu G, Üstündağ Z, Demirci S, Turan A, Ekşi H, Güzel R, Balcı S. Surface pKa determination of benzoic acid modified gold electrode by electrochemical and contact angle measurement methods. MJEN. 2014;2:3–15.

MLA

Solak, Ali, et al. “Surface PKa Determination of Benzoic Acid Modified Gold Electrode by Electrochemical and Contact Angle Measurement Methods”. MANAS Journal of Engineering, vol. 2, no. 1, May 2014, pp. 3-15, https://izlik.org/JA22DF65FH.

Vancouver

1.Ali Solak, Gamze Abacıoğlu, Zafer Üstündağ, Serkan Demirci, Aybüke Turan, Haslet Ekşi, Remziye Güzel, Sebahattin Balcı. Surface pKa determination of benzoic acid modified gold electrode by electrochemical and contact angle measurement methods. MJEN [Internet]. 2014 May 1;2(1):3-15. Available from: https://izlik.org/JA22DF65FH

Manas Journal of Engineering

16155

Surface pKa determination of benzoic acid modified gold electrode by electrochemical and contact angle measurement methods

Surface pKa determination of benzoic acid modified gold electrode by electrochemical and contact angle measurement methods

Abstract

Keywords

Benzoik Asitle Modifiye Edilmiş Altın Elektrotun Yüzey pKa'sının Elektrokimyasal ve Temas Açısı Ölçüm Metotları ile Tayini

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