We have developed a colorimetric assay for DNA detection based on the aggregation of
unmodified metallic nanoparticles. Charge neutral peptide nucleic acids (PNA) are used as …

Since the use of DNA oligonucleotide–gold nanoparticle (AuNP) conjugates was pioneered
by Mirkin's group,[1] colorimetric assays based on DNA/AuNPs have been well developed in …

A novel, high sensitive, and specific DNA assay based on gold nanoparticle (AuNP)
colorimetric detection and hybridization chain reaction (HCR) amplification has been …

We developed a novel strategy for rapid colorimetric analysis of a specific DNA sequence by
combining gold nanoparticles (AuNPs) with an asymmetric polymerase chain reaction (As …

Herein we report the development of a simple, rapid, homogeneous, and sensitive detection
system for DNA based on the scattering properties of silver-amplified gold nanoparticle …

The growing interest in DNA diagnostics, especially in combination with the need for highly-
paralleled and miniaturized hybridization assays, is today addressed by fluorescence DNA …

DNA-functionalized gold nanoparticles have been increasingly applied as sensitive and
selective analytical probes and biosensors. The DNA ligands bound to a nanoparticle …

Taking advantage of the protection effect of single-stranded DNA oligonucleotides, gold
nanoparticles (AuNPs) remain dispersed and retain a red color with the addition of a low …

Herein, we describe the detailed synthesis of Ag/Au core-shell nanoparticles, the surface-
functionalization of these particles with thiolated oligonucleotides, and their subsequent use …

Sequence-specific DNA detection is important in various biomedical applications such as
gene expression profiling, disease diagnosis and treatment, drug discovery and forensic …