Giant Optical Activity in 2D Hybrid Copper Halides: Novel Material for Second Harmonic Generation.

Giant Optical Activity in 2D Hybrid Copper Halides: Novel Material for Second Harmonic Generation. Angew Chem Int Ed Engl. 2021 Jan 22;: Authors: Guo Z, Li J, Wang C, Liu R, Liang J, Gao Y, Cheng J, Zhang W, Zhu X, Pan R, He T Abstract Hybrid organic-inorganic metal halides have emerged as highly promising materials for a wide range of applications in optoelectronics. Incorporating chiral organic molecules into metal halides allows for the expansion of their unique optical and electronic properties to chiral optics. Herein, using chiral R- or S-methylbenzylamine (R-/S-MBA) as the organic component, we present the synthesis of chiral hybrid copper halides, (R-/S-MBA) 2 CuCl 4 , and investigate their optical activity for the first time. Thin films of this material show a record anisotropic g-factor as high as ~0.06. Additionally, we discuss the origin of giant optical activity observed in (R-/S-MBA) 2 CuCl 4  through theoretical modeling based on density functional theory (DFT) and demonstrate highly efficient second harmonic generation (SHG) in these samples. Our work provides insights into the design of chiral materials by structural engineering, building a new platform for chiral and nonlinear photonic device applications of the chiral hybrid copper halides. PMID: 33481292 [PubMed - as supplied by publisher]
Source: Angewandte Chemie - Category: Chemistry Authors: Tags: Angew Chem Int Ed Engl Source Type: research