Novel Electrochemical Method for the Characterization of the Degree of Chirality in Chiral Polyaniline. Issue 1 (23rd November 2012)

• Record Type: Journal Article
• Authors: Feng, Zhang; Li, Ma; Yan, Yang; Jihai, Tang; Xiao, Li; Wanglin, Li
• Is Part Of: Chirality. Volume 25:Issue 1(2013:Jan.)
• Page Start: 39
• Page End: 42
• Publication Date: 2012-11-23
• Subjects: Chirality -- Periodicals; Pharmaceutical chemistry -- Periodicals; 541.22
• DOI: 10.1002/chir.22113
• Languages: English
• ISSNs: 0899-0042

Abstract

<abstract abstract-type="main"> <title>ABSTRACT</title> <p>A novel method to indicate the degree of chirality in polyaniline (PANI) was developed. The ( <sc>d</sc>‐camphorsulfonic acid)‐ and (HCl)‐PANI‐based electrodes exhibited significantly different electrochemical performances in <sc>d</sc>‐ and <named-content id="chir22113-info-0001" content-type="drugGenericName" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink"><sc>l</sc>‐Alanine</named-content> (Ala) aqueous solution, respectively, which can be used for the characterization the optical activity of chiral PANI. Cyclic voltammogram, tafel, and open circuit potential of PANI‐based electrodes were measured within <sc>d</sc>‐ and <sc>l</sc>‐Ala electrolyte solution, respectively. The open circuit potentials under different reacting conditions were analyzed by Doblhofer model formula, in which [<italic>C</italic>⁺]_poly1/[<italic>C</italic>⁺]_poly2 was used as a parameter to characterize the degree of chirality in chiral PANI. The results showed that [<italic>C</italic>⁺]_poly1/[<italic>C</italic>⁺]_poly2 can be increased with increasing concentrations of (1S)‐(+)‐ and (1R)‐(−)‐10‐camphorsulfonic acid. In addition, we detected that appropriate response time and lower temperature are necessary to improve the degree of chirality. <italic>Chirality 25:39‐42, 2013</italic>.© 2012 Wiley Periodicals, Inc.</p> </abstract>