We show how to use well-defined conjugated polyelectrolytes (CPEs) combined with surface energy patterning to fabricate DNA chips utilizing fluorescence signal amplification. Cholesterol-modified DNA strands in complex with a CPE are adsorbed to a surface energy pattern, formed by printing with soft elastomer stamps. Hybridization of the surface bound DNA strands with a short complementary strand from solution is monitored using both fluorescence microscopy and imaging surface plasmon resonance. The CPEs act as antennas, enhancing resonance energy transfer to the dye-labeled DNA when complementary hybridization of the double strand occurs. © 2009 American Chemical Society.
CITATION STYLE
Wigenius, J. A., Magnusson, K., Björk, P., Andersson, O., & Inganäs, O. (2010). DNA chips with conjugated polyelectrolytes in resonance energy transfer mode. Langmuir, 26(5), 3753–3759. https://doi.org/10.1021/la903101v
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