Atom transfer radical polymerization (ATRP) is receiving increasing attention as a method for surface functionalization. In this paper we discuss a simple way, based on the hydrophilicity of the substrate, for discriminating between surface and bulk polymerization in materials having a homogeneous distribution of initiator groups. This concept could allow a consistent simplification of the processing techniques and is therefore of high significance for the applicability of ATRP.
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Bontempo et al. (2002) studied this question.