Solid-State Nonlinear Optical Properties of Mononuclear Copper(II) Complexes with Chiral Tridentate and Tetradentate Schiff Base Ligands

Rigamonti, Luca; Forni, Alessandra; Cariati, Elena; Malavasi, Gianluca; Pasini, Alessandro

doi:10.3390/ma12213595

Submit to this Journal Review for this Journal Edit a Special Issue

Article Menu

...

Open AccessArticle

Solid-State Nonlinear Optical Properties of Mononuclear Copper(II) Complexes with Chiral Tridentate and Tetradentate Schiff Base Ligands

^1,2,*

^2,3

¹ and

Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Modena e Reggio Emilia, via G. Campi 103, 41125 Modena, Italy

Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi 19, 20133 Milano, Italy

Istituto di Scienze e Tecnologie Molecolari, Consiglio Nazionale delle Ricerche, via C. Golgi 19, 20133 Milano, Italy

Author to whom correspondence should be addressed.

Materials 2019, 12(21), 3595; https://doi.org/10.3390/ma12213595

Received: 8 October 2019 / Revised: 28 October 2019 / Accepted: 29 October 2019 / Published: 1 November 2019

(This article belongs to the Special Issue Trends in Nonlinear Optical Materials)

View Full-Text Download PDF

Browse Figures

Citation Export

Abstract

Salen-type metal complexes have been actively studied for their nonlinear optical (NLO) properties, and push-pull compounds with charge asymmetry generated by electron releasing and withdrawing groups have shown promising results. As a continuation of our research in this field and aiming at solid-state features, herein we report on the synthesis of mononuclear copper(II) derivatives bearing either tridentate N₂O Schiff bases L^(a−c)− and pyridine as the forth ancillary ligand, [Cu(L^a−c)(py)](ClO₄) (1a–c), or unsymmetrically-substituted push-pull tetradentate N₂O₂ Schiff base ligands, [Cu(5-A-5′-D-saldpen/chxn)] (2a–c), both derived from 5-substituted salicylaldehydes (sal) and the diamines (1R,2R)-1,2-diphenylethanediamine (dpen) and (1S,2S)-1,2-diaminocyclohexane (chxn). All compounds were characterized through elemental analysis, infrared and UV/visible spectroscopies, and mass spectrometry in order to guarantee their purity and assess their charge transfer properties. The structures of 1a–c were determined via single-crystal X-ray diffraction studies. The geometries of cations of 1a–c and of molecules 2a–c were optimized through DFT calculations. The solid-state NLO behavior was measured by the Kurtz–Perry powder technique @1.907 µm. All chiral derivatives possess non-zero quadratic electric susceptibility (χ⁽²⁾) and an efficiency of about 0.15–0.45 times that of standard urea. View Full-Text

Keywords: chiral diamines; template synthesis; mononuclear copper(II) complexes; Schiff base ligands; nonlinear optics; Kurtz–Perry powder technique

▼ Show Figures

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

Supplementary Material

Supplementary File 1:
PDF-Document (PDF, 2265 KiB)

Share and Cite

MDPI and ACS Style

Rigamonti, L.; Forni, A.; Cariati, E.; Malavasi, G.; Pasini, A. Solid-State Nonlinear Optical Properties of Mononuclear Copper(II) Complexes with Chiral Tridentate and Tetradentate Schiff Base Ligands. Materials 2019, 12, 3595. https://doi.org/10.3390/ma12213595

AMA Style

Rigamonti L, Forni A, Cariati E, Malavasi G, Pasini A. Solid-State Nonlinear Optical Properties of Mononuclear Copper(II) Complexes with Chiral Tridentate and Tetradentate Schiff Base Ligands. Materials. 2019; 12(21):3595. https://doi.org/10.3390/ma12213595

Chicago/Turabian Style

Rigamonti, Luca, Alessandra Forni, Elena Cariati, Gianluca Malavasi, and Alessandro Pasini. 2019. "Solid-State Nonlinear Optical Properties of Mononuclear Copper(II) Complexes with Chiral Tridentate and Tetradentate Schiff Base Ligands" Materials 12, no. 21: 3595. https://doi.org/10.3390/ma12213595

Find Other Styles

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Metrics

Abstract views Pdf views Html views

Article Menu

Solid-State Nonlinear Optical Properties of Mononuclear Copper(II) Complexes with Chiral Tridentate and Tetradentate Schiff Base Ligands

Abstract

Supplementary Material

Share and Cite

Article Metrics

Article Access Statistics

Article Access Map by Country/Region

Further Information

Guidelines

MDPI Initiatives

Follow MDPI