Double imprinting in a single molecularly imprinted polymer format for the determination of ascorbic acid and dopamine

Mahavir Prasad Tiwari, Rashmi Madhuri, Deepak Kumar, Darshika Jauhari, Bhim Bali Prasad*

Department of Chemistry, Faculty of Science, Banaras Hindu University, Varanasi 221 005, India

Adv. Mater. Lett., 2011, 2 (4), pp 276-280

DOI: 10.5185/amlett.indias.202

Publication Date (Web): Apr 08, 2012

E-mail: prof.bbpd@yahoo.com

Abstract


A new molecularly imprinted polymer – carbon composite fiber is constructed using reversible addition-fragmentation chain transfer polymerization technique. The fiber was evaluated as a sensor for the simultaneous determination of ascorbic acid and dopamine at ultratrace level, in aqueous samples, without any cross-reactivity. The binding characteristics of ascorbic acid and dopamine were also evaluated by differential pulse cathodic stripping voltammetry.

Keywords

Molecularly imprinted polymer-carbon composite fiber, double imprinting, differential pulse cathodic stripping voltammetry, ascorbic acid and dopamine

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