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Reference type: Journal
Authors: Skogsberg U, Meyer C, Rehbein J, Fischer G, Schauff S, Welsch N, Albert K, Hall AJ, Sellergren B
Article Title: A solid-state and suspended-state magic angle spinning nuclear magnetic resonance spectroscopic investigation of a 9-ethyladenine molecularly imprinted polymer.
Publication date: 2007
Journal: Polymer
Volume: 48
Issue: (1)
Page numbers: 229-238.
DOI: 10.1016/j.polymer.2006.10.036
Alternative URL: http://www.sciencedirect.com/science/article/B6TXW-4MCW9YW-4/2/8a997308f612de3e8ae9b02d85994a68

Abstract: Suspended-state high resolution/magic angle spinning nuclear magnetic resonance spectroscopy and solid-state cross-polarization/magic angle spinning nuclear magnetic resonance spectroscopy were employed to study the interactions between 9-ethyladenine and a 9-ethyladenine molecularly imprinted polymer, and a non-imprinted polymer, respectively, both are copolymers of methacrylic acid and ethyleneglycol dimethacrylate. Template-related structural differences between the materials were revealed by contact time measurements and solid-state nuclear magnetic resonance. Rebinding of the template to the imprinted polymer resulted in shorter contact times for nuclei believed to be involved in the binding site interactions whereas the non-imprinted polymer did not exhibit such effects. This indicates that binding site reoccupation has a stiffening effect lowering the mobility of nearby nuclei. More detailed information was obtained from suspended-state saturation transfer difference high resolution/magic angle spinning nuclear magnetic resonance experiments. These revealed molecular level details concerning the interactions of the adenine guests with the polymer binding sites. Thus, a relatively larger transfer of magnetization was observed in the solute when bound to the molecularly imprinted polymer at a position where multiple hydrogen bonds between the analyte and the template can be expected to take place in the molecularly imprinted polymer only
Template and target information: 9-ethyladenine
Author keywords: imprinted polymer, Solid-state NMR, Suspended-state NMR


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