Iodine-mediated etching of triangular gold nanoplates for colorimetric sensing of copper ion and aptasensing of chloramphenicol

Chia Chen Chang; Guoqing Wang; Tohru Takarada; Mizuo Maeda

doi:10.1021/acsami.7b13841

Iodine-mediated etching of triangular gold nanoplates for colorimetric sensing of copper ion and aptasensing of chloramphenicol

Chia Chen Chang^*
, Guoqing Wang
, Tohru Takarada
, Mizuo Maeda

^*Corresponding author for this work

RIKEN

Research output: Contribution to journal › Journal Article › peer-review

81 Scopus citations

Abstract

A colorimetric method for fast, simple, and selective detection of Cu²⁺ was developed using I-mediated etching of triangular gold nanoplates (AuNPLs). The method was based on our finding that Cu²⁺ efficiently promoted this etching in the presence of SCN-. The etching process was accompanied by a dramatic color change from blue to red, allowing for visual and spectroscopic detection of Cu²⁺ with detection limits of 10 and 1 μM, respectively. When molecular recognition by a DNA aptamer was incorporated into this method, visual detection of chloramphenicol was also achieved with a detection limit of 5 μM.

Original language	English
Pages (from-to)	34518-34525
Number of pages	8
Journal	ACS Applied Materials and Interfaces
Volume	9
Issue number	39
DOIs	https://doi.org/10.1021/acsami.7b13841
State	Published - 04 10 2017
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2017 American Chemical Society.

Keywords

Aptamer
Chloramphenicol
Copper ion
Etching
Gold nanoplate

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10.1021/acsami.7b13841

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title = "Iodine-mediated etching of triangular gold nanoplates for colorimetric sensing of copper ion and aptasensing of chloramphenicol",

abstract = "A colorimetric method for fast, simple, and selective detection of Cu2+ was developed using I-mediated etching of triangular gold nanoplates (AuNPLs). The method was based on our finding that Cu2+ efficiently promoted this etching in the presence of SCN-. The etching process was accompanied by a dramatic color change from blue to red, allowing for visual and spectroscopic detection of Cu2+ with detection limits of 10 and 1 μM, respectively. When molecular recognition by a DNA aptamer was incorporated into this method, visual detection of chloramphenicol was also achieved with a detection limit of 5 μM.",

keywords = "Aptamer, Chloramphenicol, Copper ion, Etching, Gold nanoplate",

author = "Chang, \{Chia Chen\} and Guoqing Wang and Tohru Takarada and Mizuo Maeda",

note = "Publisher Copyright: {\textcopyright} 2017 American Chemical Society.",

year = "2017",

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doi = "10.1021/acsami.7b13841",

language = "英语",

volume = "9",

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T1 - Iodine-mediated etching of triangular gold nanoplates for colorimetric sensing of copper ion and aptasensing of chloramphenicol

AU - Chang, Chia Chen

AU - Wang, Guoqing

AU - Takarada, Tohru

AU - Maeda, Mizuo

PY - 2017/10/4

Y1 - 2017/10/4

N2 - A colorimetric method for fast, simple, and selective detection of Cu2+ was developed using I-mediated etching of triangular gold nanoplates (AuNPLs). The method was based on our finding that Cu2+ efficiently promoted this etching in the presence of SCN-. The etching process was accompanied by a dramatic color change from blue to red, allowing for visual and spectroscopic detection of Cu2+ with detection limits of 10 and 1 μM, respectively. When molecular recognition by a DNA aptamer was incorporated into this method, visual detection of chloramphenicol was also achieved with a detection limit of 5 μM.

AB - A colorimetric method for fast, simple, and selective detection of Cu2+ was developed using I-mediated etching of triangular gold nanoplates (AuNPLs). The method was based on our finding that Cu2+ efficiently promoted this etching in the presence of SCN-. The etching process was accompanied by a dramatic color change from blue to red, allowing for visual and spectroscopic detection of Cu2+ with detection limits of 10 and 1 μM, respectively. When molecular recognition by a DNA aptamer was incorporated into this method, visual detection of chloramphenicol was also achieved with a detection limit of 5 μM.

KW - Aptamer

KW - Chloramphenicol

KW - Copper ion

KW - Etching

KW - Gold nanoplate

UR - https://www.scopus.com/pages/publications/85032620913

U2 - 10.1021/acsami.7b13841

DO - 10.1021/acsami.7b13841

M3 - 文章

C2 - 28910068

AN - SCOPUS:85032620913

SN - 1944-8244

VL - 9

SP - 34518

EP - 34525

JO - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

IS - 39

ER -

Iodine-mediated etching of triangular gold nanoplates for colorimetric sensing of copper ion and aptasensing of chloramphenicol

Abstract

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Keywords

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