Biospecific assembling of gold nanoparticles with protein or oligonucleotide linkers as studied by light scattering and extinction spectra

2002 ◽  
Author(s):  
Vladimir A. Bogatyrev ◽  
Lev A. Dykman ◽  
Yaroslav M. Krasnov ◽  
Vladimir K. Plotnikov ◽  
Nikolai G. Khlebtsov
Keyword(s):  
Gold Nanoparticles ◽  
Light Scattering ◽  
Extinction Spectra

scholarly journals A simple and sensitive sensor for silver ions based on unmodified gold nanoparticles by using dynamic light scattering techniques

2017 ◽  
Vol 95 (12) ◽  
pp. 1267-1272 ◽  
Author(s):  
Zhiyou Xiao ◽  
Anjiang Tang ◽  
Hongsheng Huang ◽  
Ze Wang
Keyword(s):  
Gold Nanoparticles ◽  
Light Scattering ◽  
Dynamic Light Scattering ◽  
High Sensitivity ◽  
Silver Ions ◽  
Hydrodynamic Diameter ◽  
Optimum Conditions ◽  
Sensitivity And Selectivity ◽  
Sensitive Sensor ◽  
Average Hydrodynamic Diameter

A simple and sensitive assay for Ag+ was developed with unmodified gold nanoparticles (AuNPs) by using dynamic light scattering techniques. Ag+ could induce the oligonucleotide (5′-ATC ACT ATA TCA TAT ACT CAT-3′) to change from a single-stranded structure to a double-stranded structure and desorb from the surface of AuNPs, which triggered the aggregation of AuNPs in the salt solution. The average hydrodynamic diameter of aggregated AuNPs could be detected by using dynamic light scattering techniques. Under the optimum conditions, the average hydrodynamic diameter of AuNPs is proportional to the concentration of Ag+ within the range of 13.3–100.0 nmol/L, with a detection limit of 3.2 nmol/L. The method is easy to operate and has low sample consumption, high sensitivity and selectivity.

Diffusion of Gold Nanoparticles in Inverse Opals Probed by Heterodyne Dynamic Light Scattering

2019 ◽  
Vol 131 (2) ◽  
pp. 723-737 ◽  
Author(s):  
Cédric Giraudet ◽  
Matthias S. G. Knoll ◽  
Yaraset Galvan ◽  
Sebastian Süß ◽  
Doris Segets ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Inverse Opals

scholarly journals Acetylcholine and acetylcholinesterase inhibitors detection using gold nanoparticles coupled with dynamic light scattering

2020 ◽  
Vol 1 ◽  
pp. 100007
Author(s):  
Amal El Alami ◽  
Fabienne Lagarde ◽  
Qun Huo ◽  
Tianyu Zheng ◽  
Mimouna Baitoul ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Acetylcholinesterase Inhibitors
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