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Crystals 2016, 6(12), 158; doi:10.3390/cryst6120158

Molecular Structures and Second-Order Nonlinear Optical Properties of Ionic Organic Crystal Materials

Beijing Key Laboratory of Function Materials for Molecule & Structure Construction, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
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Academic Editor: Helmut Cölfen
Received: 1 September 2016 / Revised: 16 November 2016 / Accepted: 25 November 2016 / Published: 14 December 2016
(This article belongs to the Special Issue Nonlinear Optical Crystals)

Abstract

In recent years, there has been extensive research and continuous development on second-order nonlinear optical (NLO) crystal materials due to their potential applications in telecommunications, THz imaging and spectroscopy, optical information processing, and optical data storage. Recent progress in second-order NLO ionic organic crystal materials is reviewed in this article. Research has shown that the second-order nonlinear optical properties of organic crystal materials are closely related to their molecular structures. The basic structures of ionic organic conjugated molecules with excellent nonlinear optical properties are summarized. The effects of molecular structure, for example, conjugated π electron systems, electronic properties of donor-acceptor groups, and different counter-anion effects on second order NLO properties and crystal packing are studied. View Full-Text
Keywords: second-order nonlinear optical material; ionic organic crystal; D-π-A conjugated molecule second-order nonlinear optical material; ionic organic crystal; D-π-A conjugated molecule
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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. (CC BY 4.0).

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Liu, X.; Yang, Z.; Wang, D.; Cao, H. Molecular Structures and Second-Order Nonlinear Optical Properties of Ionic Organic Crystal Materials. Crystals 2016, 6, 158.

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