synthesis of a molecularly imprinted polymer for dioxin对二恶英合成的分子印迹聚合物.pdfVIP

Sensors 2006, 6, 915-924 sensors ISSN 1424-8220 © 2006 by MDPI /sensors Full Research Paper Synthesis of a Molecularly Imprinted Polymer for Dioxin Cosimino Malitesta 1,*, Rosaria Anna Picca 1, Giuseppe Ciccarella 2, Vito Sgobba 2 and Magda 1 Brattoli 1 Laboratorio di Chimica Analitica, Dipartimento di Scienza dei Materiali, Università degli Studi di Lecce, Palazzina M, Via Monteroni, 73100 Lecce, Italy 2 Dipartimento di Ingegneria dell’Innovazione, Università degli Studi di Lecce, Via Arnesano, 73100 Lecce, Italy * Author to whom correspondence should be addressed; E-mail: cosimino.malitesta@unile.it Received: 28 April 2006 / Accepted: 28 June 2006 / Published: 24 August 2006 Abstract: A molecularly imprinted polymer for recognising selectively 2,3,7,8- tetrachlorodibenzodioxin (TCDD) was made by a new non-covalent method employing a “dummy” template. The proposed way represents a simplification of a synthetic scheme proposed by Lübke et al.[1] for covalent imprinting. Comparison of extraction yields of the novel polymer, a non imprinted polymer and an imprinting polymer, prepared by the original procedure demonstrates the binding capacity of the proposed polymer, which is in principle applicable to solid phase extraction (SPE) of dioxin. Keywords: Molecularly imprinted polymers, non-covalent approach, 2,3,7,8- tetrachlorodibenzodioxin. 1. Introduction Determ