MIPdatabase
Authors: Rückert B, Kolb U
Article Title: Distribution of molecularly imprinted polymer layers on macroporous silica gel particles by STEM and EDX.
Publication date: 2005
Journal: Micron
Volume: 36
Issue: (3)
Page numbers: 247-260.
DOI: 10.1016/j.micron.2004.11.003
Alternative URL: http://www.sciencedirect.com/science/article/B6T9N-4F6CMR2-2/2/75b9ee6f93d4e09d0f75581be91cd313
Abstract: Using transmission electron microscopy (TEM) in parallel and scanning mode (STEM) combined with energy dispersive X-ray spectroscopy (EDX) the distribution of molecularly imprinted polymer layers covalently grafted on the inner and outer surface of macroporous silica gel particles was observed. The grafting was achieved using a special initiator system (iniferter) and applied on a well known model system producing molecularly imprinted layers with l-phenyl alanine analide (l-PA) as template. By staining the sample with RuO4 before its embedment in epoxy resin and cutting ultra thin slices it was possible to identify the stained grafted polymer on the silica matrix by EDX. Based on this, complete particle slices could be investigated by visual means according to the presence or absence of grafted polymer and its layer homogeneity
Template and target information: l-phenyl alanine analide, l-PA
Author keywords: molecular imprinting, Macroporous silica, iniferter, STEM, EDX, Elemental analysis
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