Issue 23, 2022

[C(NH2)3]2S2O8: combining delocalized and localized π-conjugate units to achieve strong optical anisotropy

Abstract

A new birefringent crystal [C(NH2)3]2S2O8 was obtained by combining the π-conjugated [C(NH2)3] cation and the [S2O8] groups with localized O–O π-bonds. Optical measurements show that the UV cutoff wavelength of [C(NH2)3]2S2O8 is 222 nm, and its birefringence is 0.102 at 546 nm. The calculated results show that its large birefringence is attributed to the synergistic effect of the [C(NH2)3] and [S2O8] units, which is the first case among known birefringent crystals. These results provide new insights into the design of superior birefringent materials.

Graphical abstract: [C(NH2)3]2S2O8: combining delocalized and localized π-conjugate units to achieve strong optical anisotropy

Supplementary files

Article information

Article type
Research Article
Submitted
19 jul. 2022
Accepted
26 sep. 2022
First published
27 sep. 2022

Inorg. Chem. Front., 2022,9, 6067-6074

[C(NH2)3]2S2O8: combining delocalized and localized π-conjugate units to achieve strong optical anisotropy

M. Zhang, B. Zhang, D. Yang and Y. Wang, Inorg. Chem. Front., 2022, 9, 6067 DOI: 10.1039/D2QI01561G

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