Visual chiral recognition of mandelic acid enantiomers with l-tartaric acid-capped gold nanoparticles as colorimetric probes

Song, Guoxin; Xu, Chunli; Li, Baoxin

doi:10.1016/j.snb.2015.03.109

Cited by 60 publications

(39 citation statements)

References 38 publications

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“…Nanoparticles allow for the easy detection of chiral molecules by the naked eye. [33] The AgNPs capped with a novel chiral R-mandelic acid-derived calix[4]arene (R-MAC4), for it good optical and structural properties. [4y] Interestingly, AuNPs can selectively adsorb D-tryptophan, and therefore, L-tryptophan molecules can easily be separated by simple centrifugation of the tryptophan/AuNP solution.…”

Section: Recognition Of Chiral Moleculesmentioning

confidence: 99%

A Review of Gold and Silver Nanoparticle‐Based Colorimetric Sensing Assays

et al. 2017

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The nanoparticle colorimetric-based methods have been extensively used for rapid detection, however there are few limitations which can be kept under control or avoided by understanding the crucial parameters involved in these reactions. This review addresses the main parameters that influence colorimetric-based methods and provides a rational classification of the current approaches, by focusing particularly on gold nanoparticles (AuNPs) and silver nanoparticles (AgNPs). The AgNP and AuNP-based colorimetric assays can be very efficient and sensitive especially for biomolecule identification and for metal ion detection in environmental screening. Specifically, this review highlights the detection of metal ions through their coordination with nanoparticle stabilizing ligands. The review also addresses various approaches based on label-free aptasensors to better understand their role as smart colorimetric sensing devices.

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Section: Recognition Of Chiral Moleculesmentioning

confidence: 99%

A Review of Gold and Silver Nanoparticle‐Based Colorimetric Sensing Assays

et al. 2017

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“…Various methods used to distinguish chiral enantiomers have been reported, such as chiral high‐performance liquid chromatography, gas chromatography, capillary electrophoresis, fluorescence (FL), electrochemistry, and colorimetric analysis . However, most of them require expensive chiral columns and complicated sample pretreatment and are time‐consuming, high cost, and impractical for real‐time detection . So under the special requirements, simultaneous determination of chiral enantiomers without separation first is still challenging.…”

Section: Introductionmentioning

confidence: 99%

“…13 However, most of them require expensive chiral columns and complicated sample pretreatment 14 and are time-consuming, high cost, and impractical for real-time detection. 15 So under the special requirements, simultaneous determination of chiral enantiomers without separation first is still challenging. The chiral recognition of environment is rarely reported 16 ; therefore, a program for chiral environmental analysis was proposed in this work.…”

Section: Introductionmentioning

confidence: 99%

Chiral recognition of the carnitine enantiomers using rhodamine B as a resonance Rayleigh scattering probe

2018

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A novel and simple method for simultaneous determination of chiral carnitine (CA) enantiomers was proposed. In this work, the rhodamine B (RhB) could react with D-CA and L-CA, and new resonance Rayleigh scattering (RRS) peaks were generated. According to the polarization experiments, it could be testified that scattering peak of this system was composed of resonance fluorescence and scattering light. The RRS intensity of the RhB could be enhanced with the addition of D- or L-CA. However, The RRS signal with L-CA had greater degree increased. So a useful assay program for the selective and simultaneous determination of CA enantiomers was built via the RRS signal differences of the two CA enantiomers responding to RhB. The results showing a good linear relationship and high correlation coefficient were obtained, and the detection limit was calculated as 0.086 μg·mL (D-CA) and 0.042 μg·mL (CA). Here, new built RRS method with RhB as chiral probe could be applied to achieve selective analysis through this work. The applicability of the chiral recognition of CA enantiomers mixtures in samples had been demonstrated by its low cost, sensitivity, enantioselectivity, simplicity, and good availability of the materials.

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“…An enantiosensor that can achieve visual discrimination of enantiomers is highly desirable, in which a molecular recognition event is translated into an appreciable color change . Recently, owing to low cost, high sensitivity and simplicity, the metal nanoparticles based colorimetric sensors have been applied to detect carbohydrates , amino acid and proteins in aqueous samples, because targeted analyte can readily induce dispersion/aggregation states of metal nanoparticles and thus the reversible color changes . Xia et al.…”

Section: Introductionmentioning

confidence: 99%

Smartphone‐based colorimetric chiral recognition of ibuprofen using aptamers‐capped gold nanoparticles

Jing

Liu

et al. 2017

Electrophoresis

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Sensitive and fast detection of ibuprofen enantiomers is very critical for required routine monitoring and risk assessment of trace pollutants in water samples. Here a simple, rapid and highly sensitive android smartphone application for chiral recognition was developed. Aptamer-capped gold nanoparticles (AuNPs) was demonstrated as an efficient detection platform for (S)-(+)-ibuprofen (S-Ibu) and (R)-(-)-ibuprofen (R-Ibu). Detachment of an enantioselective aptamer from the AuNPs surface and binding with an enantiomer of Ibu lead to AuNPs aggregation, which allows a rapid enantiodiscrimination of Ibu by monitoring the absorbance changes of AuNPs solution in the UV-vis spectrum. Under optimal conditions, the limit of detection for S-Ibu and R-Ibu was 1.24 and 3.91 pg/mL, respectively. These probes showed good chiral recognition ability in mixed samples (i.e. S-Ibu + R-Ibu) and environmental samples. These advantages can be further developed by quantitative measurement with smartphone, which opens new opportunities for on-site detection of trace chiral pollutants in a simple and practical manner.

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Visual chiral recognition of mandelic acid enantiomers with l-tartaric acid-capped gold nanoparticles as colorimetric probes

Cited by 60 publications

References 38 publications

A Review of Gold and Silver Nanoparticle‐Based Colorimetric Sensing Assays

A Review of Gold and Silver Nanoparticle‐Based Colorimetric Sensing Assays

Chiral recognition of the carnitine enantiomers using rhodamine B as a resonance Rayleigh scattering probe

Smartphone‐based colorimetric chiral recognition of ibuprofen using aptamers‐capped gold nanoparticles

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