Synthesis and Spectroscopic Characterization of Highly Conducting BF3-Doped Polyaniline

✍ Scribed by D. Chaudhuri; A. Kumar; I. Rudra; D. D. Sarma

• Publisher: John Wiley and Sons
• Year: 2001
• Tongue: English
• Weight: 181 KB
• Volume: 13
• Category: Article
• ISSN: 0935-9648
• DOI: 10.1002/1521-4095(200110)13:20<1548::aid-adma1548>3.0.co;2-s

✦ Synopsis

Experimental

Synthesis of Gels: The gels used in this work were synthesized from acrylic acid and acryloyl derivatives of amino acids that contain a hydrophobic alkyl chain (of length = n) and a terminal hydrophilic carboxyl group [13]. Specifically we have used acrylic acid (AAC, n = 0), acryloyl-4-amino butyric acid (A4ABA, n = 3), acryloyl-6-amino caproic acid (A6ACA, n = 5), and acryloyl-8-amino caprylic acid (A8ACA, n = 7). Gels were prepared by free-radical polymerization of aqueous solution of the monomers in the presence of N,N¢-methylene bisacrylamide as the cross-linker. Polymerization was done in deionized double-distilled water at 40 C using ammonium persulfate as initiator. The gels were washed thoroughly and then dried to give approximately 0.5 cm diameter cylindrical samples.

Complexation of the Gels: Metal complexation studies were done using nonionized, partially ionized, and fully ionized gels. We report here studies on complexation of the gels with Cu 2+ , Pb 2+ , Cd 2+ , Zn 2+ , and Fe 3+ ions. Complexation of the gels was carried out by placing the dried cylindrical gels in dilute aqueous solutions of 0.1, 0.05, and 0.001 M CuCl 2, 0.