Song Yunxia, Lin Chensheng, Wang Chao, Zhou Yuqiao, Fang Shenghao, Dong Pengxiang, Li Bingxuan, Ye Ning, Zhao Xin, Luo Min
School of Electronic Electrical Engineering and Physics, Fujian University of Technology, Fuzhou, Fujian 350108, China.
Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China.
Inorg Chem. 2024 Jun 17;63(24):10932-10937. doi: 10.1021/acs.inorgchem.4c00427. Epub 2024 May 30.
Inorganic supramolecular compounds are the emergent class of infrared (IR) nonlinear optical (NLO) materials. However, the reported inorganic supramolecular IR NLO pnictides are still scarce. In this work, a new inorganic supramolecular IR NLO phosphide, EuSiP, has been synthesized using the metal salt flux method. The structure of EuSiP features an anionic host framework containing the oriented [SiP] dual-T2 supertetrahedra with the guest Eu cations filling in the intervals. Additionally, EuSiP exhibits strong phase-matched (PM) second-harmonic generation (SHG) (4.0 × AgGaS), large birefringence (0.087 @2050 nm), and wide infrared transparency. This study highlights the potential of inorganic supramolecular pnictides for exploring high-performance IR NLO crystals.
无机超分子化合物是一类新兴的红外（IR）非线性光学（NLO）材料。然而，已报道的无机超分子红外NLO磷族化物仍然稀少。在这项工作中，采用金属盐助熔剂法合成了一种新型无机超分子红外NLO磷化物EuSiP。EuSiP的结构具有一个阴离子主体框架，其中包含取向的[SiP]双T2超四面体，客体Eu阳离子填充在其间隙中。此外，EuSiP表现出强的相位匹配（PM）二次谐波产生（SHG）（4.0×AgGaS）、大双折射（2050nm处为0.087）和宽红外透明度。这项研究突出了无机超分子磷族化物在探索高性能红外NLO晶体方面的潜力。
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