کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1166325 | 1491099 | 2012 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Label-free sensing of pH and silver nanoparticles using an “OR” logic gate Label-free sensing of pH and silver nanoparticles using an “OR” logic gate](/preview/png/1166325.png)
Many natural phenomena are associated with the presence of two or more separate variables. We report here an “OR” DNA logic gate based on a luminescent platinum(II) switch-on probe for silver nanoparticles and pH, both of which may be considered putative indicators of pollution. The modulation of metal complex/double-stranded DNA complex phosphorescence by Ag+ and H+ was used to construct a simple, rapid and label-free method for the label-free detection of pH and nanomolar Ag+ ions and nanoparticles in aqueous solutions with high selectivity.
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► A DNA logic gate for silver nanoparticles and pH has been constructed.
► A platinum(II) complex produces a luminescence response to the analyte.
► The logic gate performs “OR” operations with a switch-on luminescent output.
► The system selectively detects nanomolar silver nanoparticles in aqueous solution.
Journal: Analytica Chimica Acta - Volume 733, 6 July 2012, Pages 78–83