A trip in the nonlinear optical properties of iridium complexes

Abstract

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One‐Pot Transfer Hydrogenation Reductive Amination of Aldehydes and Ketones by Iridium Complexes “on Water”

“…The half‐sandwich Ir III complexes, which coordinate with Cp‐type ligand, which have the features of controllability, flexibility, stability and ease to synthesize, [ 23 ] had been the most attractive and powerful catalysts for efficient assembly of new chemical bonds. [ 24 ] For example, Xiao [ 25a ] and others reported the iridium complexes‐catalyzed transfer hydrogenation reductive amination of carbonyl compounds with amines.…”

Cyclometalated Ir(III) Complexes with Curcuminoid Ligands as Active Second-Order NLO Chromophores and Building Blocks for SHG Polymeric Films

“…Coordination compounds also showed promise because they were characterized by low-energy ligand-to-metal (LM), metal-to-ligand (ML), ligand-to-ligand (LL), and intraligand (IL) charge transfer (CT) excited states. The intensity and energy of these transitions can be easily regulated by a judicious choice of the nature, oxidation state, and ligands of the metal center [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27].…”

“…As determined by the Electric Field Induced Second Harmonic generation (EFISH) technique in solution [28][29][30], coordination complexes often reach a second-order NLO response larger than that of the prototypal Disperse Red One, trans-4,4 -O 2 NC 6 H 4 N=NC 6 H 4 NEt(CH 2 CH 2 OH)], which has been used in electrooptic polymeric poled films [31]. Indeed, they can reach µβ values (β is the projection along the ground state dipole moment (µ) axis of the vectorial component of the tensor of the quadratic hyperpolarizability) superior to 500 × 10 −48 esu, making them competitive with respect to organic along the ground state dipole moment (μ) axis of the vectorial component of the tensor of the quadratic hyperpolarizability) superior to 500 × 10 −48 esu, making them competitive with respect to organic compounds and of interest for optoelectronic applications [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27]. Among them, photoactive iridium complexes are very appealing not only for their attractive second-order NLO properties [27,[32][33][34][35][36][37], but also because they find application in various fields, including in electroluminescent devices [38][39][40][41], in dye-sensitized solar cells [41][42][43][44][45], in sensing [41], as...…”

Review on the study of Nonlinear Optics of Iridium Metal Organic Complex

“…r t , which is a power relationship with the incident photoelectric field [4] describes the medium electric polarization intensity ( ) , P r t . The most important physical quantity of and optical field intensity ( ) , E r t is the optical polarizability.…”

“…The most important physical quantity of and optical field intensity ( ) , E r t is the optical polarizability. Therefore, the study of nonlinear optical susceptibility is of great significance to the study of nonlinear optical effects [4]. Under the action of an electric field, the positive and negative charge centers of the atoms migrate, that is, polarization occurs, resulting in an induced dipole moment.…”