Solution ionic strength effect on gold nanoparticle solution color transition

Burns, Christopher T.; Spendel, Wolfgang U.; Puckett, Sean D.; Pacey, G.E.

doi:10.1016/j.talanta.2005.11.038

Cited by 72 publications

(48 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, these forces change greater than the counteraction on addition of ionic substances. It leads to an aggregation accompanying a color change from red to blue or gray [14]. Also, colloidal gold has good mobility in the porous membrane, and low susceptibility to aggregation during the preparation of the test strip.…”

Section: Resultsmentioning

confidence: 99%

A Gold Nanoparticle and Aflatoxin B1-BSA Conjugates Based Lateral Flow Assay Method for the Analysis of Aflatoxin B1

2012

View full text Add to dashboard Cite

A rapid and simple immuno-chromatographic assay was developed to detect aflatoxin B1 (AFB1). The assay was based on a modified competitive binding format using colloidal gold and polyclonal antibody (Pab) conjugates. The anti-AFB1 Pab was immobilized to a defined detection zone on a porous nitrocellulose membrane and colloidal gold particles were conjugated to AFB1-BSA which served as a detection reagent. The AFB1-containing sample was added to the membrane and allowed to move with AFB1-BSA-coated particles dried on the conjugation pad. The mixture was then passed along the porous membrane by capillary action past the Pab in the detection zone, which captured AFB1 or AFB1-BSA. AFB1 in the sample inhibits binding of AFB1-BSA conjugated gold particles to the Pab and prevents formation of a red color dot. In the absence of AFB1, AFB1-BSA conjugated gold particles bound to the Pab, give a red color within this detection zone. With this method, 10 μg/mL of AFB1 was detected in less than 10 min. The developed AFB1 assay also showed no cross reaction to Ochratoxin A (OTA).

show abstract

Section: Resultsmentioning

confidence: 99%

A Gold Nanoparticle and Aflatoxin B1-BSA Conjugates Based Lateral Flow Assay Method for the Analysis of Aflatoxin B1

2012

View full text Add to dashboard Cite

show abstract

“…These extraordinary optical features make Au NPs an ideal color reporting group for signaling molecular recognition events and making them function as efficient quenchers for most fluorophores [152][153][154][155][156].…”

Section: Gold Nanoparticles/nanoclustersmentioning

confidence: 99%

Fluorescent/luminescent detection of natural amino acids by organometallic systems

Wang

Liu

Tong

et al. 2015

Coordination Chemistry Reviews

122

View full text Add to dashboard Cite

“…Alteration of the charge balancing condition caused, for instance, by the modification the solution ionic strength leads to the AuNPs aggregation (Burns et al, 2006). In general, the aggregation of conjugated AuNPs is induced by both crosslinking and non-crosslinking mechanisms which are driven by inter-particle bonding formation and changes in surface properties, respectively (Zhao et al, 2008).…”

Section: Origins Of Ultrasensitive Dna Detectionmentioning

confidence: 99%

Ultrasensitive detection of non-amplified genomic DNA by nanoparticle-enhanced surface plasmon resonance imaging

D’Agata

Corradini

Ferretti³

et al. 2010

Biosensors and Bioelectronics

View full text Add to dashboard Cite

Solution ionic strength effect on gold nanoparticle solution color transition

Cited by 72 publications

References 3 publications

A Gold Nanoparticle and Aflatoxin B1-BSA Conjugates Based Lateral Flow Assay Method for the Analysis of Aflatoxin B1

A Gold Nanoparticle and Aflatoxin B1-BSA Conjugates Based Lateral Flow Assay Method for the Analysis of Aflatoxin B1

Fluorescent/luminescent detection of natural amino acids by organometallic systems

Ultrasensitive detection of non-amplified genomic DNA by nanoparticle-enhanced surface plasmon resonance imaging

Contact Info

Product

Resources

About