Label-free colorimetric biosensing of copper(II) ions with unimolecular self-cleaving deoxyribozymes and unmodified gold nanoparticle probes
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Using unimolecular copper(II)-dependent self-cleaving deoxyribozymes (DNAzymes), a label-free colorimetric biosensor for copper(II) ions (Cu2+) has been developed based on the sequence-length-dependent adsorption of single-stranded deoxyribonucleic acid (ssDNA... ...
