Details

Autor(en) / Beteiligte

• Guo, Zhihang
• Li, Junzi
• Wang, Changshun
• Liu, Rulin
• Liang, Jiechun
• Gao, Yang
• Cheng, Jiaji
• Zhang, Wenjing
• Zhu, Xi
• Pan, Ruikun
• He, Tingchao

Titel

Giant Optical Activity and Second Harmonic Generation in 2D Hybrid Copper Halides

Ist Teil von

• Angewandte Chemie International Edition, 2021-04, Vol.60 (15), p.8441-8445

Auflage

International ed. in English

Ort / Verlag

Germany: Wiley Subscription Services, Inc

Erscheinungsjahr

2021

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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 enables the extension of their unique optical and electronic properties to chiral optics. By using chiral (R)‐ or (S)‐methylbenzylamine (R‐/S‐MBA) as the organic component, we synthesized chiral hybrid copper halides, (R‐/S‐MBA)2CuCl4, and investigated their optical activity. Thin films of this material showed a record anisotropic g‐factor as high as approximately 0.06. We discuss the origin of the giant optical activity observed in (R‐/S‐MBA)2CuCl4 by theoretical modeling based on density functional theory (DFT) and demonstrate highly efficient second harmonic generation (SHG) in these samples. Our study provides insight into the design of chiral materials by structural engineering, creating a new platform for chiral and nonlinear photonic device applications of the chiral hybrid copper halides. Chiral 2D hybrid metal halides ((R‐/S‐MBA)2CuCl4) were synthesized, and their optical activity was investigated. The materials exhibited a record anisotropic g‐factor of up to about 0.06 and efficient second harmonic generation (see picture). Calculations demonstrated that their giant optical activity is induced by the high joint density of states. Hence, the chiral (R‐/S‐MBA)2CuCl4 films should be suitable for use in chiral and nonlinear photonic devices.