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Open Access research which pushes advances in bionanotechnology

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SIPBS is a major research centre in Scotland focusing on 'new medicines', 'better medicines' and 'better use of medicines'. This includes the exploration of nanoparticles and nanomedicines within the wider research agenda of bionanotechnology, in which the tools of nanotechnology are applied to solve biological problems. At SIPBS multidisciplinary approaches are also pursued to improve bioscience understanding of novel therapeutic targets with the aim of developing therapeutic interventions and the investigation, development and manufacture of drug substances and products.

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Electroaddressing agarose using fmoc-phenylalanine as a temporary scaffold

Liu, Y. and Cheng, Y. and Wu, Hsuan-Chen and Kim, E. and Ulijn, R. V. and Rubloff, G. W. and Bentley, W. E. and Payne, Gregory F (2011) Electroaddressing agarose using fmoc-phenylalanine as a temporary scaffold. Langmuir, 27 (12). pp. 7380-7384. ISSN 0743-7463

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Abstract

Electroaddressing, the use of imposed electrical stimuli to guide assembly, is attractive because electrical stimuli can be conveniently applied with high spatial and temporal resolution. Several electroaddressing mechanisms have been reported in which electrode-induced pH gradients trigger stimuli-responsive materials to undergo localized sol gel transitions to form hydrogel matrices. A common feature of existing hydrogel electrodeposition mechanisms is that the deposited matrix retains residual charged, acidic, or basic (macro)molecules. Here, we report that pH-responsive fluorenyl-9-methoxycarbonyl-phenylalanine (Fmoc-Phe) can be used to codeposit the neutral and thermally responsive polysaccharide agarose. Upon cooling, an agarose network is generated and Fmoc-Phe can be removed. The Fmoc-Phe-mediated codeposition of agarose is simple, rapid, spatially selective, and allows for the electroaddressing of a bioactive matrix.