Simple and sensitive detection of dopamine in the presence of high concentration of ascorbic acid using gold nanoparticles as colorimetric probes

Zhang, Yuanfu; Li, Baoxin; Chen, Xingling

doi:10.1007/s00604-009-0269-5

Cited by 105 publications

(59 citation statements)

References 39 publications

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“…Moreover, the detection signal can be viewed by the naked eyes [10,11]. Silver and gold nanoparticles are frequently employed as colorimetric probes for sensing biomolecules and metal ions because of their distance-dependent optical properties and extremely high extinction coefficients [12][13][14][15][16]. When ligands assembled on the surface of nanoparticles bond with an analyte, the aggregation of nanoparticles occurs.…”

Section: Introductionmentioning

confidence: 99%

Colorimetric detection of lead (II) based on silver nanoparticles capped with iminodiacetic acid

Shang

2012

Microchim Acta

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We report on a colorimetric probe for the determination of Pb(II). It is based on the use of silver nanoparticles that have been functionalizd with iminodiacetic acid (IDA-Ag NPs). The absorption spectrum and solution color of IDA-Ag NPs undergo dramatic changes on exposure to Pb(II) with a new absorption peak appearing at 650 nm and a concomitant color change from yellow to green. This is assumed to result from the aggregation of IDA-Ag NPs induced by Pb(II). Under optimum conditions, there is a linear relationship between the ratio of the absorbances at 650 and 396 nm, respectively, and the concentration of Pb(II) in the 0.4 to 8.0 μM concentration range, with a detection limit of 13 nM. The method was applied to the determination of Pb(II) in tap water and urea samples, and recoveries ranged from 93.7 % to 98.6 %.

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Section: Introductionmentioning

confidence: 99%

Colorimetric detection of lead (II) based on silver nanoparticles capped with iminodiacetic acid

Shang

2012

Microchim Acta

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“…In 2009, Zhang et al has developed a new colorimetric strategy for detection of DA based on AuNPs probe and this assays exhibits excellent selectivity for DA over excess AA [26]. Based on the DA detection method, the amine group of DA is absorbed onto the surface of colloidal gold via chemisorptions-type interactions.…”

Section: Colorimetric Probementioning

confidence: 99%

Gold nanoparticle based optical and electrochemical sensing of dopamine

et al. 2015

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This review (with 110 refs.) gives an overview on the progress that has been made in the past few years on the use of gold nanoparticles (AuNPs) for use in sensors and analytical tools for the determination of dopamine (DA). Both AuNPs and their composites with other organic and inorganic materials including noble metals are treated. Following an overview on the clinical significance of DA, we discuss the various analytical methods that are (a) electrochemiluminescence (ECL); (b) surface enhanced Raman scattering (SERS); (c) colorimetric probing and visual detection; and (d) the large class of electrochemical sensors. Subsections cover sensors based on plain AuNPs, bimetallic NPs, AuNP-metal@metal oxide nanocomposites, AuNP nanocomposites with organic polymers, AuNP nanocomposites with carbon nanotubes or with graphene, and finally sensors based on ternary materials containing AuNPs. The review ends with a conclusion on current challenges of sensors for DA and an outlook on future trends.

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“…Some colorimetric systems have been set up to detect various kinds of substances such as DNA [17], biologically relevant molecules [18], metal ions [19], viruses [20] and microorganisms and so on [21][22][23][24]. At present, there have been some reports about colorimetric detection of DA [25][26][27]. However, they were limited either with low sensitivity and selectivity or with complicated procedures.…”

Section: Introductionmentioning

confidence: 99%

Gold nanoparticle based colorimetric probe for dopamine detection based on the interaction between dopamine and melamine

et al. 2014

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We report on a probe for the colorimetric and bareeye detection of dopamine (DA). The optical effect is based on the finding that DA inhibits the melamine-induced aggregation of red gold nanoparticles (AuNPs) to form blue AuNP clusters. We presume that the aggregation induced by melamine is due to its strong hydrogen-bonding interactions with DA. The color changes can be monitored by spectrophotometry or the bare eye. The probes works over the 33 nM to 3.33 mM DA concentration range, and levels down to 33 nM can be quantified. The nanoprobe was successfully applied to the determination of DA in spiked serum.

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Simple and sensitive detection of dopamine in the presence of high concentration of ascorbic acid using gold nanoparticles as colorimetric probes

Cited by 105 publications

References 39 publications

Colorimetric detection of lead (II) based on silver nanoparticles capped with iminodiacetic acid

Colorimetric detection of lead (II) based on silver nanoparticles capped with iminodiacetic acid

Gold nanoparticle based optical and electrochemical sensing of dopamine

Gold nanoparticle based colorimetric probe for dopamine detection based on the interaction between dopamine and melamine

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