Peptide Nucleic Acids (PNAs) are non-natural DNA/RNA analogues with favourable physico-chemical properties and promising applications. Discovered nearly 20 years ago, PNAs have recently re-gained quite a lot of attention. In this Perspective article, we discuss the latest advances on the preparation and utilisation of PNA monomers and oligomers containing metal complexes. These metal- conjugates have found applications in various research fields such as in the sequence-specific detection ofnucleic acids, in the hydrolysis of nucleic acids and peptides, as radioactive probes or as modulators of PNA˙DNA hybrid stability, and last but not least as probes for molecular and cell biology.
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