Jiao Jiahao, Cheng Meng, Yang Rong, Yan Yuchen, Zhang Min, Zhang Fangfang, Yang Zhihua, Pan Shilie
CAS Key Laboratory of Functional Materials and Devices for Special Environments, Xinjiang Key Laboratory of Electronic Information Materials and Devices, Xinjiang Technical Institute of Physics & Chemistry, CAS, 40-1 South Beijing Road, Urumqi, 830011, China.
Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China.
Angew Chem Int Ed Engl. 2022 Jul 4;61(27):e202205060. doi: 10.1002/anie.202205060. Epub 2022 May 11.
Birefringent materials play a significant role in modulating polarized light in optical communication and the laser industry. However, the discovery of deep ultraviolet (DUV, λ<200 nm) birefringent materials still faces a serious challenge. Herein, we propose hydroxylated π-conjugated [B(OH) ] and [B O (OH) ] units for designing DUV birefringent materials. Innovatively, four new hydroxyborates have been synthesized under mild synthesis conditions. They present four novel pseudo layers that benefit from the large degree of freedom assembly modes of [B(OH) ] and [B O (OH) ] genes and large birefringence (0.057-0.123@532 nm). Moreover, the Cs [B(OH) ] Cl crystal features a short DUV cutoff edge (180 nm), which further indicates that the reported compounds are potential DUV birefringent crystals. Free and flexible assembly modes of π-conjugated [B(OH) ] and [B O (OH) ] groups endow them a particular advantage as significant genes for exploring promising DUV birefringent materials.
双折射材料在光通信和激光工业中对偏振光的调制起着重要作用。然而，深紫外（DUV，λ<200 nm）双折射材料的发现仍面临严峻挑战。在此，我们提出用羟基化的π共轭[B(OH)₄]⁻和[B₃O₃(OH)₅]²⁻单元来设计深紫外双折射材料。创新性地，在温和的合成条件下合成了四种新型硼酸盐。它们呈现出四种新颖的假层结构，这得益于[B(OH)₄]⁻和[B₃O₃(OH)₅]²⁻基团的大自由度组装模式以及大双折射（在532 nm处为0.057 - 0.123）。此外，Cs₂[B(OH)₄]Cl晶体具有短的深紫外截止边（180 nm），这进一步表明所报道的化合物是潜在的深紫外双折射晶体。π共轭[B(OH)₄]⁻和[B₃O₃(OH)₅]²⁻基团自由灵活的组装模式赋予它们作为探索有前景的深紫外双折射材料的重要基团的特殊优势。
