Design of cyclometallated 5-π-delocalized donor-1,3-di(2-pyridyl)benzene platinum(II) complexes with second-order nonlinear optical properties

N. Baggi (1) , E. Garoni (1) , A. Colombo (1) , C. Dragonetti (1) , S. Righetto (1) , D. Roberto (1) , J. Boixel (2) , V. Guerchais (2) , S. Fantacci (3)

1 UNIMI - Università degli Studi di Milano = University of Milan
2 ISCR - Institut des Sciences Chimiques de Rennes
3 ISTM - Istituto di Scienze e Tecnologie Molecolari

The effect on the second-order nonlinear optical properties of the nature of the π-delocalized moiety in the position 5 of a 1,3-di(2-pyridyl)benzene cyclometallated to a platinum(II) center was investigated. The influence of the substitution of a double bond with a triple bond as bridge between a triphenylamino group and the cyclometallated phenyl ring was studied and turned out to be negligible. Remarkably, the novel easily-prepared platinum(II) complex with a cyclometallated 5-styryl-1,3-di(2-pyridyl)benzene is characterized by a good second-order NLO response, as determined in solution by the EFISH technique; it is a good candidate for application in photonics.

Mots clés: Cyclometallated platinum(II) complexes; EFISH; Photonics; Second-order nonlinear optics; ​π-delocalized ligands

Domaines: Chimie de coordination

N. Baggi, E. Garoni, A. Colombo, C. Dragonetti, S. Righetto, et al.. Design of cyclometallated 5-π-delocalized donor-1,3-di(2-pyridyl)benzene platinum(II) complexes with second-order nonlinear optical properties. Polyhedron, 2018, 140, pp.74-77. ⟨10.1016/j.poly.2017.11.051⟩. ⟨hal-01695560⟩