Jan 1, 2020 · Numerous lateral flow immunoassays (LFIs) utilize AuNPs for colorimetric detection of various analytes. Herein, the synthesis of colloidal AuNPs in the size range of 12–68 nm is reported along with the calculation of physicochemical parameters.

Jan 1, 2022 · Transmission electron microscopy (TEM), dynamic light scattering (DLS), and UV–vis- NIR spectroscopy were used to characterize the as-synthesized AuNPs. The narrow particle size distribution and low polydispersity index value (PDI) for all AuNPs revealed the presence of monodisperse AuNPs.

Feb 9, 2021 · The AuNPs were synthesized and characterized by UV–Vis spectroscopy, DLS and TEM. The AuNPs prepared by citrate reduction were stable in borate buffer in various ionic strength with a wide range of concentration for several months.

Jul 3, 2024 · The AuNPs were adsorbed on an indium tin oxide (ITO) electrode modified by a positively charged polymer [poly(ethylenimine), PEI] and their E p was carefully studied and calculated by density functional theory (DFT).

Sep 17, 2020 · We investigate the interactions between citrate-stabilised AuNPs ranging from 5 to 60 nm in diameter and large unilamellar vesicles acting as a model membrane system. Our results reveal the...

Figure 5 shows the DLS analysis of mushroom extract-mediated synthesis of AuNPs; the average size (20 nm) is within the expected range of particle sizes between 15 to 30 nm and is very similar...

Jul 29, 2016 · We present here some useful methods to obtain the accurate hydrodynamic size of the AuNPs using DLS. We also demonstrate and explain an extremely powerful aspect of DLS—its exceptional sensitivity in detecting gold nanoparticle aggregate formation, and the use of this unique capability for chemical and biological sensing applications.

Aug 24, 2016 · We present here some useful methods to obtain the accurate hydrodynamic size of the AuNPs using DLS. We also demonstrate and explain an extremely powerful aspect of DLS-its exceptional sensitivity in detecting gold nanoparticle aggregate formation, and the use of this unique capability for chemical and biological sensing applications.

Dec 18, 2015 · We have developed a unique DNA-assembled gold nanoparticles (AuNPs) dimer for dynamic light scattering (DLS) sensing of transcription factors, exemplified by estrogen receptor (ER) that...

Aug 3, 2021 · Here, we demonstrate that lipoic acid-modified dinucleotides can be used to modify AuNPs surfaces in a controllable manner to produce conjugates that are stable in aqueous buffers and biological...