Two UV optical crystals with strong optical anisotropy, large band gaps and an α-BBO type structure

Lehui Liu; Feifei Yuan; Yisheng Huang; Zhoubin Lin; Lizhen Zhang

doi:10.1039/d3dt00581j

Two UV optical crystals with strong optical anisotropy, large band gaps and an α-BBO type structure

Dalton Trans. 2023 May 2;52(17):5798-5803. doi: 10.1039/d3dt00581j.

Authors

Lehui Liu^{1

2}, Feifei Yuan¹, Yisheng Huang¹, Zhoubin Lin^{1

2}, Lizhen Zhang¹

Affiliations

¹ Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P. R. China. lzb@fjirsm.ac.cn.
² University of Chinese Academy of Sciences, Beijing 100049, P. R. China.

PMID: 37039002
DOI: 10.1039/d3dt00581j

Abstract

The [B₃O₆] group has attracted a lot of attention as α-BaB₂O₄ (α-BBO) is composed of the [B₃O₆] group showing a short UV cut-off edge and a large birefringence. However, it is difficult to synthesize novel crystals with properties beyond α-BBO using [B₃O₆] as a fundamental building block (FBB). Hence, we successfully synthesized two cases of α-BBO-type organic-inorganic hybrid compounds using α-BBO as the template and melamine [C₃N₆H₆] as the fundamental building block. The coplanar and parallel arrangement of π-conjugated [C₃N₆H₆] groups makes them exhibit excellent optical properties, including improved birefringence responses (0.264 and 0.243@546 nm) and wide bandgaps (4.12 and 4.20 eV).