Chemistry - A European Journal
Chemistry - A European Journal
5 years ago

Efficient Sensitized ZE Photoisomerization of an Iridium(III)-Azobenzene Complex over a Wide Concentration Range

Efficient Sensitized ZE Photoisomerization of an Iridium(III)-Azobenzene Complex over a Wide Concentration Range
Jutta Schwarz, Javier Moreno, Stefan Hecht, David Bléger, Lutz Grubert
To improve the sensitized ZE photoisomerization of azobenzenes, and circumvent the threshold concentration necessary for the bimolecular photoinduced electron transfer reaction to generate the rapidly isomerizing Z-azobenzene radical anion, an IrIII complex with a covalently tethered azobenzene fragment was synthesized. Selective irradiation of the 1MLCT band of the IrIII complex induced an efficiently sensitized photoswitching of the dyad over a wide concentration range and even at high dilution. Beating diffusion by covalently linking a photosensitizing Ir complex to an azobenzene unit to achieve efficient indirect photoisomerization at low concentration.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/chem.201703376

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