In their recent review published in Coordination Chemistry Reviews, Dr Véronique Guerchais (ISCR) and Pr. Dominique Roberto (University of Milan, Italy), highlight their results obtained during their long-standing and fruitful research collaboration. Over the past decade, they have investigated the design and synthesis of metal complexes and coordination compounds with nonlinear optical (NLO) properties.
This review shows the potential of iridium compounds as molecular materials with NLO activity, a topic initiated by the Italian team. The survey of NLO-phores evidences how it is possible to tune the second-order NLO response by a suitable choice of the ligands. The emphasis is placed on second-order NLO properties determined in solution at molecular level. Furthermore, examples of nano-organization of some NLO-active iridium complexes in polymeric matrices to give second-order NLO-active thin films are then presented. The potential of iridium complexes as versatile NLO redox-switching materials is also addressed. Notably, both Ir(I) and Ir(III) complexes can display large Two Photon Absorption properties.
• The versatile properties of iridium complexes make them appealing for nonlinear optics (NLO).
• Iridium complexes with suitable ligands have interesting second-order NLO properties, as well as two-photon absorption properties.
Examples of NLO-active Iridium(III) complexes containing π-delocalized 4,4′-disubstituted-2,2′-bipyridine ligands, including a photochromic DTE-substituted unit.
A trip in the nonlinear optical properties of iridium complexes
Alessia Colombo, Claudia Dragonetti, Véronique Guerchais, Claus Hierlinger, Eli Zysman-Colman, Dominique Roberto
Coordination Chemistry Reviews 414 (2020) 213293
- Dr V. Guerchais - veronique [dot] guerchaisuniv-rennes1 [dot] fr
Univ Rennes, CNRS, ISCR-6226, F-35000 Rennes, France
- Pr D. Roberto - https://sites.unimi.it/dacgroup/about-group/prof-dominique-roberto