Fluorescence quenching of quantum dots by gold nanorods and its application to DNA detection
2009 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 94, no 6Article in journal (Refereed) Published
Gold nanorods (GNRs) with different localized surface plasmon resonance (LSPR) peaks and different thicknesses of polymer-coating were synthesized to validate that the distinct GNR-based quenching process of quantum dot (QD) emission follows the metal surface energy transfer theory. The quenching efficiency is directly related to the spectral overlap of GNR-LSPR absorption and QD-emission, as well as the separation distance between the two nanoparticles. GNRs are advantageous for DNA conjugation, and the high efficiency of GNR-QD quenching system was utilized for sensitive DNA detection.
Place, publisher, year, edition, pages
2009. Vol. 94, no 6
biomedical measurement, chemical sensors, DNA, fluorescence, gold, molecular biophysics, nanobiotechnology, nanoparticles, optical, sensors, quantum dots, radiation quenching, surface energy, surface, plasmon resonance, energy-transfer, nanoparticles
IdentifiersURN: urn:nbn:se:kth:diva-18177DOI: 10.1063/1.3080662ISI: 000263409400088OAI: oai:DiVA.org:kth-18177DiVA: diva2:336223
QC 201005252010-08-052010-08-052013-11-19Bibliographically approved