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  • Title: DNA detection method based on the two-dimensional aggregation and selective desorption of nanoparticle probes.
    Author: Charrier A, Candoni N, Thibaudau F.
    Journal: J Phys Chem B; 2006 Jul 06; 110(26):12896-900. PubMed ID: 16805588.
    Abstract:
    A label-free two-dimensional colorimetric DNA sensor is reported. This sensor is based on the 2D aggregation of oligonucleotide-modified gold nanoparticle probes induced by the molecular hybridization of single-stranded oligonucleotide probes and their complementary single-stranded DNA targets. To detect the aggregation, we have developed a new detection method based on the selective desorption of nonaggregated nanoparticles. We will show here that this detection method is highly specific and allows the quantification of the DNA targets.
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