Shining a New Light on an Old Game – An OsII‐Based Near‐IR Light Switch
- 7 August 2012
- journal article
- research article
- Published by Wiley in European Journal of Inorganic Chemistry
- Vol. 2012 (25) , 3984-3988
Abstract
We present a high‐yield synthesis, the spectroscopic, electrochemical, and photophysical characterization of a new near‐IR OsII DNA light switch based on the pydppz ligand {pydppz = 3‐(pyrid‐2′‐yl)dipyrido[3,2‐a:2′,3′‐c]phenazine}. The new compound represents, to the best of our knowledge, the first example of an [Os(tpy)2]‐like species able to intercalate into DNA. This compound is completely quenched in aqueous solution and becomes luminescent in the near‐IR spectral region in the presence of a small amount of biopolymer. Thus this osmium species behaves as a real OFF‐ON DNA light switch.Keywords
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