Journal
INORGANIC CHEMISTRY COMMUNICATIONS
Volume 124, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.inoche.2020.108390
Keywords
Sulfate; Crystal structure; Nonlinear optical response; Structure-property relationship
Categories
Funding
- National Natural Science Foundation of China [21833010, 21525104, 61975207, 21921001]
- Key Research Program of Frontier Sciences of the Chinese Academy of Sciences [ZDBS-LY-SLH024]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB20010200, XDB20000000]
- National Key Research and Development Program of China [2019YFA0210400]
- Key Laboratory of Functional Crystals and Laser Tech-nology, TIPC, CAS [FCLT 202003]
- Key Laboratory of New Processing Technology for Nonferrous Metal & Materials, Ministry of Education/Guangxi Key Laboratory of Optical and Electronic Materials and Devices [20KF-11]
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Inorganic sulfates crystallizing in acentric structures are essential for exhibiting nonlinear optical (NLO) response, but the process is challenging. This study synthesized a new acentric sulfate, Cs2Zn2(SO4)(3), showing a moderate second-order NLO response. The research enriches the diversity of sulfate structures and provides a new design strategy for the synthesis of novel NLO sulfates.
Acentric structure is the indispensable condition for a compund to exhibit nonlinear optical (NLO) response. However, it's difficult for inorganic sulfates to crystallize in acentric structures. In this communication, a new acentric sulfate, Cs2Zn2(SO4)(3), has been synthesized by spontaneous crystallization method. The crystal structure of Cs2Zn2(SO4)(3) is layered and is composed of Zn-2(SO4)(3) layers and Cs+ cations, which is different from A(2)B(2)(SO4)(3) (A = K, Rb, B = Mg, Ca, Cd, Zn) type that owns three-dimensional framework. Powder NLO response suggest that Cs2Zn2(SO4)(3) exhibits a moderate second-order NLO response of about 0.15 x KH2PO4. Theoretical calculations were performed and elucidated that the origination of NLO response is from SO4 groups and ZnOn (n = 4, 5) polyhedra. This work will enrich the diversity of sulfate structure and provide new desgin strategy on the synthesis of novel NLO sulfates.
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