2013
DOI: 10.1016/j.bios.2012.09.032
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A simple “clickable” biosensor for colorimetric detection of copper(II) ions based on unmodified gold nanoparticles

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Cited by 91 publications
(42 citation statements)
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“…The electrochemistry methods show low detection limit and broad linear range, but possibly with the disadvantages of instability and interference of organics in anodic/catholic stripping voltammetry (Liu et al, 1999;Salaun and van den, Berg, 2006;Lin et al, 2012). The reported colorimetric methods can be realized by naked eyes but without ideal sensitivity (Lou et al, 2011;Liu et al, 2013;Shen et al, 2013;Wang et al, 2014). Our established method presented ideal sensitivity and simple operation processes.…”
Section: Methods Performance Comparisonmentioning
confidence: 99%
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“…The electrochemistry methods show low detection limit and broad linear range, but possibly with the disadvantages of instability and interference of organics in anodic/catholic stripping voltammetry (Liu et al, 1999;Salaun and van den, Berg, 2006;Lin et al, 2012). The reported colorimetric methods can be realized by naked eyes but without ideal sensitivity (Lou et al, 2011;Liu et al, 2013;Shen et al, 2013;Wang et al, 2014). Our established method presented ideal sensitivity and simple operation processes.…”
Section: Methods Performance Comparisonmentioning
confidence: 99%
“…4). The limit of detection for Cu 2 þ ion was attained of 0.5 nM based on the signal to noise ratio of 3 (S/N¼3) which was much lower than the other existing colorimetric methods (Zhou et al, 2008;Shen et al, 2013). So, the colorimetric strategy was demonstrated to be ultrasensitive and highly reliable for the detection of trace Cu 2 þ ion.…”
Section: Sensitivity Of the Colorimetric Sensor For Cu 2 þ Ionmentioning
confidence: 94%
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“…Metal nanoparticles, especially gold nanoparticles (AuNPs) and silver nanoparticles (AgNPs), have been widely used in sensors, biochip and immunoassay readout techniques [9][10][11][12][13][14][15][16]. Among them, the DNA-functionalized metal nanoparticles have become a great interest.…”
Section: Introductionmentioning
confidence: 99%
“…Lots of colorimetric techniques based on AuNPs for the determination of different organic compounds [10][11][12][13][14][15][16][17][18], metal ions [19][20][21][22][23][24][25][26][27][28], and other analytes have been suggested for the past ten years. The AuNPs-based colorimetric platform has also found an application for sensing anions, including dihydrophosphate [29,30], hydrophosphate [31], fluoride [32,33], cyanide [34], nitrite [35], sulfide [36], and hypochlorite [37].…”
Section: Introductionmentioning
confidence: 99%