Colorimetric detection of mercury ion based on unmodified gold nanoparticles and target-triggered hybridization chain reaction amplification

Sensitive detection of miRNA by using hybridization chain reaction coupled with positively charged gold nanoparticles

“…However, obvious smears obtained after the incubation of miRNA-21 (1.0 μM) with H 1 and H 2 mixture (1.0 μM, 1:1 ratio) (lane 1). Such results obviously proved the happen of HCR, and the smears might be attributed to the difference of dsDNA polymers in length, which was similar to other literatures 58 59 60 .…”

Highly sensitive colorimetric sensor for Hg2+ detection based on cationic polymer/DNA interaction

“…As indicated in Table S1, we compared the characteristics of the developed colorimetric sensor with other reported AuNPs-based sensors (Ding et al, 2012;Gao et al, 2014;Gao et al, 2015;Li et al 2009a;Wang et al, 2015;Xu et al, 2009). The detection sensitivity in this work is higher than in many previous reports, and furthermore, the time required for detection is shorter than or comparable to some previous reports.…”

Cysteamine‐Modified Gold Nanoparticles as a Colorimetric Sensor for the Rapid Detection of Gentamicin

“…Depending on the size and aggregative state of the AuNPs, they can appear in a variety of colors. This property has been used to develop colorimetric AuNP‐based methods of detection for a wide variety of substances, such as DNA (Deng et al., ), small organic molecules (Chen, Zhang, Zhou, & Ma, ; Chi, Liu, Guan, Zhang, & Han, ; Kang, Zhang, Li, Miao, & Wu, ), metal ions (Chen et al., ; Wang et al., ), and proteins (Pavlov, Xiao, Shlyahovsky, & Willner, ). A number of nanoparticle‐based methods for gentamicin detection have previously been developed (Miranda‐Andrades et al., ; Radhakumary & Sreenivasan, ), but these techniques either have an insufficiently low limit of detection or are unsuited for the detection of antibiotic residues in complex food matrices.…”