Visual Detection of Copper(II) Ions Based on an Anionic Polythiophene Derivative Using Click Chemistry

Yao, Zhiyi; Yang, Yanbo; Chen, Xueliang; Hu, Xianping; Zhang, Li; Liu, Lei; Zhao, Ye; Wu, Hai‐Chen

doi:10.1021/ac401386v

Cited by 74 publications

(40 citation statements)

References 43 publications

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“…The rapid onsite monitoring of Cu 2+ is thereby emerging as an important analytic issue. 2 However, the strong dependence of developed methods on instruments (AAS, AES, ICP-MS, etc.) prevents them from being used in outsidelaboratory applications.…”

Section: ■ Introductionmentioning

confidence: 99%

Highly Sensitive Visual Detection of Copper Ions Based on the Shape-Dependent LSPR Spectroscopy of Gold Nanorods

Zhang

Chen²,

Qu³

et al. 2014

Langmuir

128

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ABSTRACT:We have developed a novel approach to the rapid visual detection of Cu 2+ in natural samples based on the copper-mediated leaching of gold nanorods (GNRs). In the presence of hexadecyltrimethylammonium bromide, which can reduce the redox potential of Au(I)/ Au, the GNRs are catalytically etched by Cu 2+ preferentially along the longitudinal direction. And as a result, the localized surface plasmon resonance extinction peak shifts to short wavelength, accompanied by a color change from blue to red. The leaching mechanism has been carefully discussed in a series of control experiments. Under optimal conditions, this sensor exhibits good sensitivity (LOD = 0.5 nM). Most importantly, the approach is highlighted by its high selectivity for and tolerance of interference, which enables the sensor to detect Cu 2+ directly in a complex matrix, especially in seawater. Moreover, such a nanoparticle-based sensor is also successfully applied to test paper for the visual detection of Cu 2+ .

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Section: ■ Introductionmentioning

confidence: 99%

Highly Sensitive Visual Detection of Copper Ions Based on the Shape-Dependent LSPR Spectroscopy of Gold Nanorods

Zhang

Chen²,

Qu³

et al. 2014

Langmuir

128

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“…Among heavy metals, despite its less-significant toxicity, copper has become a widely distributed pollutant in natural water as a result of the dumping of electronic trash and mining residues4. Long-term exposure to excess copper ions (Cu 2+ ) is highly toxic to organisms and the human body56. Thereby, numerous methods have been developed for Cu 2+ detection, such as inductively coupled plasma mass spectroscopy (ICPMS)7, atomic absorption/emission spectroscopy (AAS/AES)8, electrochemical detection9, and nanomaterial-based probes1011.…”

mentioning

confidence: 99%

An Innovative Metal Ions Sensitive “Test Paper” Based on Virgin Nanoporous Silicon Wafer: Highly Selective to Copper(II)

Chen

et al. 2016

Sci Rep

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Developing an innovative “Test Paper” based on virgin nanoporous silicon (NPSi) which shows intense visible emission and excellent fluorescence stability. The visual fluorescence quenching “Test Paper” was highly selective and sensitive recognizing Cu2+ at μmol/L level. Within the concentration range of 5 × 10−7 ~50 × 10−7mol/L, the linear regression equation of IPL = 1226.3-13.6[CCu2+] (R = 0.99) was established for Cu2+ quantitative detection. And finally, Cu2+ fluorescence quenching mechanism of NPSi prober was proposed by studying the surface chemistry change of NPSi and metal ions immersed-NPSi using XPS characterization. The results indicate that SiHx species obviously contribute to the PL emission of NPSi, and the introduce of oxidization state and the nonradiative recombination center are responsible for the PL quenching. These results demonstrate how virgin NPSi wafer can serve as Cu2+ sensor. This work is of great significant to promote the development of simple instruments that could realize rapid, visible and real-time detection of various toxic metal ions.

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“…Meanwhile, the color change could be easily observed just when the concentration of Cu 2+ was 20 nM. Compared with most of other colorimetric methods, our work was more sensitive 3,15,16,36,[40][41][42][43][44][45][46][47] (Table S2) , respectively. Then, mixtures were incubated with Au@Pt-NCs and applied to the color development reaction.…”

Section: Analytical Performancesmentioning

confidence: 84%

A Highly Sensitive Colorimetric Method for Copper Ions Detection Based on Controlling the Peroxidase-like Activity of Au@Pt Nanocatalysts

Wang¹,

Pan

Peng

2017

ANAL. SCI.

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In this study, a sensitive colorimetric method for the detection of copper ion (Cu 2+ ) was developed based on controlling the peroxidase-like activity of (gold core)@(ultrathin platinum shell) nanocatalysts (Au@Pt-NCs). It was found that D-penicillamine can effectively inhibit the activity of Au@Pt-NCs. After being incubated with Cu 2+ , D-penicillamine lost inhibition toward the catalytic ability of Au@Pt-NCs. Based on the above interaction, a colorimetric detection of Cu 2+ was develop by measuring the colorimetric signal variation of the H2O2-3,3′,5,5′-tetramethylbenzidine (TMB) reaction. This method exhibited high sensitivity and selectivity toward Cu 2+ over a panel of other metal ions. The detection limit of this method was 3.7 nM and the linear range was 20 -300 nM. Moreover, 20 nM Cu 2+ can be distinguished directly by the naked eye. Furthermore, this method was applied to the analysis of water samples with good accuracy. These results demonstrated the excellent application potential of the method.

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Visual Detection of Copper(II) Ions Based on an Anionic Polythiophene Derivative Using Click Chemistry

Cited by 74 publications

References 43 publications

Highly Sensitive Visual Detection of Copper Ions Based on the Shape-Dependent LSPR Spectroscopy of Gold Nanorods

Highly Sensitive Visual Detection of Copper Ions Based on the Shape-Dependent LSPR Spectroscopy of Gold Nanorods

An Innovative Metal Ions Sensitive “Test Paper” Based on Virgin Nanoporous Silicon Wafer: Highly Selective to Copper(II)

A Highly Sensitive Colorimetric Method for Copper Ions Detection Based on Controlling the Peroxidase-like Activity of Au@Pt Nanocatalysts

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