[Study of pH measuring based on i-motif DNA conformation switch and UV-Vis absorption spectroscopy of gold nanoparticles].


A fast, sensitive, colorimetric method for the detection of pH based on the differentiate effect of gold nanoparticles to the configuration of DNA was developed in this study. The UV-Vis absorption spectroscopy of the i-motif DNA-Au NPs system has been investigated, and the effect of the concentration of salt and i-motif DNA, reaction time and DNA sequence… (More)


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