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Deep-Ultraviolet Mixed-Alkali-Metal Borates with Induced Enlarged Birefringence Derived from the Structure Rearrangement of the LiB3O5
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2019-04-09 00:00:00 , DOI: 10.1021/acs.inorgchem.9b00271 Qian Wang 1 , Fei Yang 1 , Xing Wang 1 , Jing Zhou 1 , Jia Ju 2 , Ling Huang 1 , Daojiang Gao 1 , Jian Bi 1 , Guohong Zou 3
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2019-04-09 00:00:00 , DOI: 10.1021/acs.inorgchem.9b00271 Qian Wang 1 , Fei Yang 1 , Xing Wang 1 , Jing Zhou 1 , Jia Ju 2 , Ling Huang 1 , Daojiang Gao 1 , Jian Bi 1 , Guohong Zou 3
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By introduction of K+, Rb+, and Cs+ cations into the classical commercial nonlinear optical crystal LiB3O5 (LBO), the series of novel mixed-alkali-metal borates Li2.6K0.4[B5O8(OH)2] (K-LBO), Li2.85Rb0.15[B5O8(OH)2] (Rb-LBO), and Li2.9Cs0.1[B5O8(OH)2] (Cs-LBO) have been obtained under hydrothermal conditions. The steric hindrance effect generated by the introduction of large alkali-metal cations and partial substitution of small Li+ cations broke the three-dimensional (3-D) framework of [B3O7]5– borate–oxygen clusters in LBO and resulted in a structure rearrangement to produce infrequent [B10O26]22– 2-D layers. The unique layered structure induced an increase in birefringence in A-LBOs (A = K, Rb, Cs), which is favorable for phase matching during second-harmonic generation. All three compounds are potential deep-ultraviolet nonlinear optical materials, which was proved by UV–vis–NIR diffuse reflectance spectroscopy and second-harmonic-generation measurements.
中文翻译：
LiB 3 O 5的结构重排引起的具有增强的双折射的深紫外混合碱金属硼酸盐
通过将K +，Rb +和Cs +阳离子引入经典的商用非线性光学晶体LiB 3 O 5（LBO）中，一系列新型的混合碱金属硼酸盐Li 2.6 K 0.4 [B 5 O 8（OH）2 ]（K-LBO），Li 2.85 Rb 0.15 [B 5 O 8（OH）2 ]和（Li 2.9 Cs 0.1 [B 5 O 8（OH）2）在水热条件下获得了[Cs-LBO]。引入大碱金属阳离子和部分取代小Li +阳离子产生的位阻效应打破了LBO中[B 3 O 7 ] 5-硼酸盐-氧簇的三维（3-D）构架，并导致在结构上重新排列以不经常产生[B 10 O 26 ] 22–2D层。独特的分层结构导致A-LBO（A = K，Rb，Cs）的双折射增加，这有利于二次谐波产生期间的相位匹配。这三种化合物都是潜在的深紫外线非线性光学材料，这已通过UV-vis-NIR漫反射光谱法和二次谐波产生测量法得到了证明。
更新日期：2019-04-09
中文翻译：
LiB 3 O 5的结构重排引起的具有增强的双折射的深紫外混合碱金属硼酸盐
通过将K +，Rb +和Cs +阳离子引入经典的商用非线性光学晶体LiB 3 O 5（LBO）中，一系列新型的混合碱金属硼酸盐Li 2.6 K 0.4 [B 5 O 8（OH）2 ]（K-LBO），Li 2.85 Rb 0.15 [B 5 O 8（OH）2 ]和（Li 2.9 Cs 0.1 [B 5 O 8（OH）2）在水热条件下获得了[Cs-LBO]。引入大碱金属阳离子和部分取代小Li +阳离子产生的位阻效应打破了LBO中[B 3 O 7 ] 5-硼酸盐-氧簇的三维（3-D）构架，并导致在结构上重新排列以不经常产生[B 10 O 26 ] 22–2D层。独特的分层结构导致A-LBO（A = K，Rb，Cs）的双折射增加，这有利于二次谐波产生期间的相位匹配。这三种化合物都是潜在的深紫外线非线性光学材料，这已通过UV-vis-NIR漫反射光谱法和二次谐波产生测量法得到了证明。
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