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복잡계 자기조립 연구단
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Gold nanoparticle-based detection of dopamine based on fluorescence resonance energy transfer between a 4-(4-dialkylaminostyryl)pyridinium derived fluorophore and citrate-capped gold nanoparticles

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Title
Gold nanoparticle-based detection of dopamine based on fluorescence resonance energy transfer between a 4-(4-dialkylaminostyryl)pyridinium derived fluorophore and citrate-capped gold nanoparticles
Author(s)
Peng, JJ; Zhou, N; Zhong, Y; Su, YQ; Zhao, LZ; Young-Tae Chang
Publication Date
2019-09
Journal
MIKROCHIMICA ACTA, v.186, no.9, pp.UNSP618 -
Publisher
SPRINGER WIEN
Abstract
© 2019, Springer-Verlag GmbH Austria, part of Springer Nature.A colorimetric/fluorometric dual-signal assay is described for the determination of dopamine (DA). A nanoprobe was obtained by linking a 4-(4-dialkylaminostyryl)pyridinium derived fluorophore to citrate-capped gold nanoparticles (AuNPs). The fluorescence of the fluorophore is quenched by the AuNPs via fluorescence resonance energy transfe. In the presence of DA, the catechol group of DA can absorb on the surface of AuNPs to induce aggregation, which is accompanied by a color change from red to blue. The yellow fluorescence of the fluorophore with excitation/emission maximum at 365/570 nm is recovered. The dual-signal detection allows the quantitative analysis of DA within 300 μM by the colorimetric method and 80 μM by the fluorometric method. The detection limits for the colorimetric/fluorometric methods are 1.85 μM and 0.29 μM, respectively. Quantitative determination of DA in spiked urine samples was successfully demonstrated, with recoveries ranging from 98.2 to 106.0%. [Figure not available: see fulltext.]
URI
https://pr.ibs.re.kr/handle/8788114/6270
ISSN
0026-3672
Appears in Collections:
Center for Self-assembly and Complexity(복잡계 자기조립 연구단) > Journal Papers (저널논문)
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