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Updated: Sep 10, 2025
14:44
Structure and Coordination Determination of Peptide-metal Complexes Using 1D and 2D 1H NMR
Published on: December 16, 2013
9.7K
Nonlinear optical functionalized Cu(II) coordination complexes with chiral ligands: design, structural elucidation,
Nagesh Manurkar1, Mubashar Ilyas1, Faiza Arshad2
1Key Laboratory of Clusters Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China.
Dalton Transactions (Cambridge, England : 2003)
|August 26, 2025
Summary
Researchers designed chiral copper(II) complexes with halogenated ligands, enhancing nonlinear optical (NLO) properties. Complex-4 demonstrated superior NLO performance, offering insights for designing advanced functional materials.
Area of Science:
- Coordination Chemistry
- Materials Science
- Crystallography
Background:
- Chiral ligands are crucial for asymmetric synthesis and advanced materials.
- Copper(II) complexes offer tunable electronic and optical properties.
- Nonlinear optical (NLO) materials are essential for modern photonics and optoelectronics.
Purpose of the Study:
- To design, synthesize, and characterize novel chiral copper(II) complexes.
- To investigate the influence of halogen substitution on ligand and complex properties.
- To evaluate the linear and nonlinear optical characteristics of the synthesized compounds.
Main Methods:
- Synthesis of five chiral ligands from L-phenylalanine and halogenated salicylaldehydes.
- Formation and characterization of copper(II) coordination complexes.
- X-ray crystallography to determine complex structures and noncentrosymmetric packing.
- Density Functional Theory (DFT) calculations for electronic structure analysis.
Main Results:
- Crystallographic studies revealed distorted square-pyramidal Cu(II) geometry and noncentrosymmetric packing.
- Halogen substitution systematically reduced HOMO-LUMO gaps and enhanced charge transfer.
- Copper complexes exhibited improved linear and nonlinear optical properties compared to ligands.
- Complex-4 showed the most significant NLO performance, especially in second-harmonic generation and electro-optic responses.
Conclusions:
- The study established a structure-property relationship for NLO behavior in chiral copper(II) complexes.
- Halogen substitution is an effective strategy for tuning electronic and NLO properties.
- The findings provide a foundation for designing functional coordination complexes with enhanced NLO capabilities.
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