Covalent molecularly imprinted polymers for selective adsorption of plant growth stimulator 1-naphthaleneacetic acid. (21st September 2022)

• Record Type: Journal Article
• Authors: Kocúrik, Martin; Bartáček, Jan; Svoboda, Jan; Kolská, Zdeňka; Chýlková, Jaromíra; Sedlák, Miloš
• Is Part Of: Polymer. Volume 256(2022)
• Publication Date: 2022-09-21
• Subjects: 1-Naphtaleneacetic acid -- MIPs -- Electrochemical determination -- Specific sorption material -- Molecularly imprinted polymers -- Suspension polymerization -- Visible-light initiation; Polymers -- Periodicals; Polymerization -- Periodicals; Polymères -- Périodiques; Polymérisation -- Périodiques; 547.7
• DOI: 10.1016/j.polymer.2022.125189
• Languages: English
• ISSNs: 0032-3861

Abstract

Abstract: In this work, we present the development and testing of new sorption materials for the adsorption of 1-naphtaleneacetic acid (NAA). Covalently prepared molecularly imprinted polymers (MIPs) were prepared as suitable materials. Molecular imprinting was performed using two different NAA derivatives: 4-vinylbenzyl 2-(naphthalen-1-yl)acetate and N-methyl-2-(naphthalen-1-yl)-N-((4-vinylbenzoyl)oxy)acetamide. The prepared monomers bearing NAA fragment were subjected to polymerization, removal of template and the prepared MIPs were further characterized and tested. Both types were able of MIPs to catch out >98% NAA from solution (10 −3 mol L −1 ) within 10 min and subsequently desorb it quantitatively. Both types of prepared MIPs can be used in at least 10 consecutive adsorption/desorption cycles. Ester-derived MIPs were also highly effective for continuous flow adsorption of 10 −2 mol L −1 NAA and showed certain level of selectivity for NAA in a mixture with anthranilic acid and/or salicylic acid. Graphical abstract: Image 1 Highlights: NAA is an important agrochemical to monitor in the environment. MIPs derived from ester and N -methylhydroxamate has been prepared. Ester-derived MIPs are easier to prepare and exhibit binding activity to NAA. Novel BAPOs-initiated suspension photopolymerization has been used. MIPs were tested in both batch and continuous flow arrangement.