Gold nanoparticles-based colorimetric determination of cationic surfactants in environmental water samples via both electrostatic and hydrophobic interactions

Cationic Surfactant-Induced Formation of Uniform Gold Nanoparticle Clusters with High Efficiency of Photothermal Conversion under Near-Infrared Irradiation

“…19 Shrivas et al recently confirmed the existence of electrostatic interactions between the cationic surfactant and anionic AuNPs (tartratecapped). 27 After the binding of DTAB to the AuNPs through electrostatic interactions, AuNP assembly was induced through hydrophobic interactions between the hydrocarbon chains of DTAB. A color-change of the dispersion from red to violet could already be noted when the AuNPs were assembled using DTAB (without injecting to PVP solution).…”

Thermodynamic investigation of the interaction between ionic liquid functionalized gold nanoparticles and human serum albumin for selective determination of glutamine

“…It is perfectly ensured by the previous reported literature. 57,58 Comparing the FT-IR spectra of IL-AuNPs, IL-AuNPs-HSA and AuNPs with Glu complex, we can nd that IR-spectrum of IL-AuNPs resemble strongly with AuNPs-Glu complex that of IL-AuNPs-HSA, as shown in Fig. 12.…”

“…Statistically, analytical sensitivity has been provided to present the linear t for Glu concentration on FL signals. For this, following linear correlation equation 57 has been used…”

Experimental and theoretical approaches for the selective detection of thymine in real samples using gold nanoparticles as a biochemical sensor

“… 15–18 Recently, interest in colorimetric sensors has expanded because of their potential to detect target analytes in sample solutions. In this context, we have demonstrated the use of AgNPs and AuNPs for the colorimetric sensing of pesticides, 19,20 cationic surfactants, 21 metal ions 22–24 and drugs 25 from biological, environmental and food samples. In addition, the interaction of noble metal NPs with oligonucleotides and their building substances such as nucleobases and nucleosides has been reported in the literature.…”