(NH4)3[B(OH)3]2(COOH)3: a graphite-like UV nonlinear optical material with a large birefringence via structural optimization. Issue 69 (28th July 2020)

• Record Type: Journal Article
• Authors: Deng, Yalan; Wang, Lei; Ge, Yuwei; Huang, Ling; Gao, Daojiang; Bi, Jian; Zou, Guohong
• Is Part Of: Chemical communications. Volume 56:Issue 69(2020)
• Page Start: 9982
• Page End: 9985
• Publication Date: 2020-07-28
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/d0cc01881c
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : A metal-free graphite-like UV NLO material (NH4 )3 [B(OH)3 ]2 (COOH)3 exhibits a large birefringence originating from the structural optimization. Abstract : A novel noncentrosymmetric (NCS) metal-free formic-borate, (NH4 )3 [B(OH)3 ]2 (COOH)3, has been discovered, which exhibits an infrequent graphite-like structure. The alliance of two types of π-conjugated planar anions BO3 3− and COOH − produced an optimized layered structure to maximize the anisotropic polarizability, resulting in an extremely large birefringence (0.156@546 nm), larger than that of the classical commercial UV birefringent material α-BBO (0.122@546 nm). This strategy that structural optimization could enhance birefringence will guide the discovery of large birefringence materials, especially in the UV region.