Research progress in optical materials with cationic organic planar π-conjugated groups containing C[double bond, length as m-dash]N bonds

Abstract

Recently, organic planar π-conjugated groups have received increasing attention from researchers for the construction of linear/nonlinear optical crystals with excellent performance in the UV/DUV region. Compared with inorganic optically active units ([BO3]3−, [B3O6]3−, [CO3]2−, and [NO3]), organic planar π-conjugated groups have larger microscopic hyperpolarizability and polarizability anisotropy, which enable the synthesis of birefringent crystals with large birefringence or NLO crystals with a high SHG response and large birefringence. Among the various types of organic planar π-conjugated groups, cationic organic planar π-conjugated groups containing C[double bond, length as m-dash]N bonds show several great advantages, including high nonlinear polarizability, high flexibility in molecular design and assembly and easy large-size crystal growth. These merits have inspired researchers to make great efforts to develop high-performance optical crystals for application in the UV/DUV region. In this review, the compounds containing cationic organic planar π-conjugated groups (such as [C3N6H7]+, [C(NH2)3]+, [C5NH6O]+, [C4N3H6]+, etc.) are outlined. The relationship between the optical properties and the structure is discussed in accordance with the available computational and experimental data. The above types of compounds are summarised and evaluated. Finally, the main challenges and future opportunities for the construction of optical crystals using cationic organic planar π-conjugated groups are presented, and the prospects for development are outlooked.

Graphical abstract: Research progress in optical materials with cationic organic planar π-conjugated groups containing C [[double bond, length as m-dash]] N bonds

Article information

Article type
Review Article
Submitted
03 9 2024
Accepted
26 9 2024
First published
04 10 2024

Inorg. Chem. Front., 2024, Advance Article

Research progress in optical materials with cationic organic planar π-conjugated groups containing C[double bond, length as m-dash]N bonds

H. Jia, X. Hou and S. Pan, Inorg. Chem. Front., 2024, Advance Article , DOI: 10.1039/D4QI02232G

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements