Ontology highlight
ABSTRACT:
SUBMITTER: Gao L
PROVIDER: S-EPMC4583199 | biostudies-literature | 2015 Apr
REPOSITORIES: biostudies-literature
Gao Li L Li Le-Le LL Wang Xiaolong X Wu Peiwen P Cao Yang Y Liang Bo B Li Xin X Lin Yuanwei Y Lu Yi Y Guo Xuefeng X
Chemical science 20150205 4
Many metal ions are present in biology and in the human body in trace amounts. Despite numerous efforts, metal sensors with ultrahigh sensitivity (< a few picomolar) are rarely achieved. Here, we describe a platform method that integrates a Cu<sup>2+</sup>-dependent DNAzyme into graphene-molecule junctions and its application for direct detection of paramagnetic Cu<sup>2+</sup> with femtomolar sensitivity and high selectivity. Since DNAzymes specific for other metal ions can be obtained through ...[more]