Organic Nonlinear Optical Chromophores in an Inorganic Environment. Toward an Interplay between Magnetism, Conductivity, and Nonlinear Optics

Abstract

This review is devoted to hybrid materials made of organic quadratic nonlinear optical (NLO) chromophores embodied in various inorganic environments. In the first section are reported systems in which the inorganic moiety is a transparent mineral network (e.g., silica, zirconium phosphate, etc.) exhibiting good transparency, crystal stability, and mechanical hardness, but none of the electronic properties usually associated with material science. The second section focuses on NLO chromophores inserted into inorganic magnetic phases (more precisely, Mn2P2S6 and [MnIICrIII(ox)3]- layered structures). The issue related to possible synergies between optical and magnetic behavior (Faraday effect) is adressed. The last section is devoted to organic/inorganic hybrid assemblies combining NLO and conducting behavior. Besides the obvious transparency/conductivity trade-off, the possibility for interplay occurring through intermolecular charge transfer is discussed.

The electronic delocalization in para‐substituted β‐nitrostyrenes probed by resonance Raman spectroscopy and quantum‐chemical calculations

“…E-mail: pssantos@quim.iq.usp.br from the ring -orbital to the NO 2 Ł -orbital, 15 is responsible for the charge density asymmetry of the excited state, and plays a major role in the values of hyperpolarizabilities. 16 In addition, these nitrosyrene derivatives have important application as solvatochromic dyes. For example, the molecule 4-dimethylamino-ˇ-nitrostyrene displays an absorption maximum at 393 nm in n-heptane and 469 nm in water.…”

Second-order nonlinear optics in coordination chemistry: An open door towards multi-functional materials and molecular switches

“…This latter intrinsic feature allows the design of benchmark molecules in which the properties could hopefully interplay and provide new and enhanced physical capabilities [52]. The combination of (i) conducting and (ii) magnetic properties to the NLO materials will be successively reported.…”

Electric-field-induced layer-by-layer fabrication of inorganic–organic hybrid second-order nonlinear optical films

“…In this article, we want to enlarge the varieties of materials that can be used in this type of technique. We investigated if this technique was applicable to aromatic diazo groups linked silicon sol (ADS), as inorganic materials are usually more stable than organic polymers [53][54][55][56], its applications would be extended widely. We selected ADS as polycation, and LMWC molecule of 2-({4-[4-(2-carboxy-2-cyano-vinyl)-phenylazo]-phenyl}-methyl-amino)-ethyl acid (DRCB) as anion to fabricate multilayer films under electric field, and followed by photochemical reaction to achieve cross-linked structure.…”