Fluorescence quenching using plasmonic gold nanoparticles

Raikar, U. S.; Tangod, V.B.; Mastiholi, B.M.; Fulari, V. J.

doi:10.1016/j.optcom.2011.05.038

Cited by 37 publications

(19 citation statements)

References 27 publications

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“…Owing to the strong gold-thiol interaction and the distance-dependent fluorescence quenching phenomenon of gold, binding of the fluorescent probe to AuNPs can be quantified by measuring the quenching of FITC emission. [24, 25] The fluorescence emission spectrum of the FITC-thiol probe was observed at 520 nm, characteristic of FITC’s emission peak. Upon mixing with citrate-stabilized AuNPs without RBC membrane coating, the fluorescence was significantly quenched, indicating the probe’s close associations with gold surfaces.…”

mentioning

confidence: 99%

Surface Functionalization of Gold Nanoparticles with Red Blood Cell Membranes

Gao¹,

Hu²,

Fang³

et al. 2013

Advanced Materials

396

349

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mentioning

confidence: 99%

Surface Functionalization of Gold Nanoparticles with Red Blood Cell Membranes

Gao¹,

Hu²,

Fang³

et al. 2013

Advanced Materials

396

349

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“…Hence, as the gold concentration increases the quenching also increases, which is observed in Figure S1 (Supporting Information). This quenching effect also increased slightly with increasing particle sizes …”

Section: Resultsmentioning

confidence: 90%

In Situ Gold Nanoparticle Gradient Formation in a 3D Meso‐ and Macroporous Polymer Matrix

Penders

Rajasekharan

Hulander

et al. 2017

Macromol. Rapid Commun.

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Herein, the development and characterization of a 3D gradient structure of gold nanoparticles is described. The gradient of gold nanoparticles is made in situ in a macroporous nonionic block copolymer hydrogel matrix, through gold ion diffusion control. The polymer provides a matrix for diffusion of gold ions, acts as a template for controlling nanoparticle growth, and facilitates the in situ reduction of gold ions to gold nanoparticles. A clear gradient in gold nanoparticles is observed across the 3D space of the polymer matrix using scanning electron microscopy, fluorescence microscopy, atomic force microscopy, and thermogravimetric analysis. The particle gradient is further functionalized with both hydrophobic and hydrophilic groups via thiol-gold linkage to demonstrate the ability to form gradients with different chemical functionalities. Using additive manufacturing, the polymer can also be printed as a porous network with possible applications for 3D cell culturing in, e.g., biomaterials research.

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“…The possible reason for its low absorbance intensity might be due to the quenching effect of Fe/Au nanoparticles, as both Fe and Au nanoparticles can be efficient fluorescence quenchers as demonstrated by many analytical analysis studies. 19,20 …”

Section: Analysis Of Aptamer-mediated Conjugationmentioning

confidence: 99%