4.8 Article

Sr3[SnOSe3][CO3]: A Heteroanionic Nonlinear Optical Material Containing Planar π-conjugated [CO3] and Heteroleptic [SnOSe3] Anionic Groups

期刊

出版社

WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202201616

关键词

Heteroanionic Materials; NLO Materials; Oxychalcogenide-Carbonate; Structure-Property Relationship

资金

  1. National Natural Science Foundation of China [22071179, 52172006, 51972230, 51890864, 51890865]
  2. Natural Science Foundation of Tianjin [20JCJQJC00060, 21JCJQJC00090]

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Inorganic heteroanionic materials have received increasing attention as potential nonlinear optical (NLO) materials due to their ability to simultaneously satisfy the necessary but conflicting properties of NLO crystals, such as large SHG response and wide band-gap. However, there has been limited research on chalcogenides containing different types of anionic groups. In this study, the first oxychalcogenide-carbonate, Sr-3[SnOSe3][CO3], was successfully synthesized, which contains two different types of anionic groups, [SnOSe3] and [CO3]. It exhibits fascinating NLO properties, making it a promising NLO crystal with a large SHG response, sufficient birefringence, wide band-gap, and high laser damage threshold.
Inorganic heteroanionic materials are attracting increasing attention for exploring new nonlinear optical (NLO) materials because they could better satisfy the necessary but conflicting properties of NLO crystals, e.g. large SHG response and wide band-gap. Up to now, the reports on heteroanionic NLO materials have mainly focused on ultraviolet or visible oxide-based fluoroborates, fluorophosphates, borate-phosphates and borate-iodates. However, chalcogenides containing different kinds of anionic groups have barely been reported. Herein, we have synthesized the first oxychalcogenide-carbonate, Sr-3[SnOSe3][CO3] that contains two different kinds of anionic groups, [SnOSe3] and [CO3]. It crystallizes in a noncentrosymmetric space group and exhibits fascinating NLO properties, including a large SHG response (approximate to 1xAGS), sufficient birefringence (0.12 @1064 nm), wide band-gap (3.46 eV) and high laser damage threshold (240 MW cm(-2)). These make Sr-3[SnOSe3][CO3] a promising NLO crystal.

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