Issue 17, 2024

1D Cu(i)-based chiral organic–inorganic hybrid material with second harmonic generation and circular polarized luminescence

Abstract

In recent years, organic–inorganic hybrid materials have demonstrated exceptional performance in nonlinear optics, attracting widespread attention. However, there are relatively few examples of coordination compounds synthesized with Cu as the metal center that exhibit excellent nonlinear optical properties. In this study, we successfully synthesized a pair of enantiomers named R/S-Cu2I2 by reacting chiral ligands with CuI. The crystal structure reveals a one-dimensional copper-iodide chain structure built by Cu2I2 clusters, and its ordered arrangement in space provides not only a strong second harmonic generation (SHG) signal (1.24 × KDP) but also a large birefringence (0.15@1064 nm). Under excitation at 395 nm, the crystals exhibit red fluorescence peaked at 675 nm. The CD spectra of R/S-Cu2I2 show a distinct mirror-symmetric Cotton effect, and their CPL signals are corresponding and opposite in the emission range, with a maximum glum of approximately ±2.5 × 10−3. Theoretical calculations using density functional theory were also carried out to enhance our understanding of the correlation between their structures and optical properties.

Graphical abstract: 1D Cu(i)-based chiral organic–inorganic hybrid material with second harmonic generation and circular polarized luminescence

Supplementary files

Article information

Article type
Paper
Submitted
11 Mar 2024
Accepted
03 Apr 2024
First published
04 Apr 2024

Dalton Trans., 2024,53, 7315-7320

1D Cu(I)-based chiral organic–inorganic hybrid material with second harmonic generation and circular polarized luminescence

Z. Wu, M. Yu, Z. Zhang, J. Jiang, T. Liu, F. Jiang, L. Chen and M. Hong, Dalton Trans., 2024, 53, 7315 DOI: 10.1039/D4DT00735B

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