The role of cations in second-order nonlinear optical materials based on π-conjugated [BO 3 ] 3− groups

Shen, Yaoguo; Zhao, Sangen; Luo, Junhua

doi:10.1016/j.ccr.2018.03.012

Cited by 156 publications

(98 citation statements)

References 135 publications

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“…Nonlinear optical (NLO) crystals capable of switching specic coherent light sources generated by a solid-state laser to the ultraviolet (UV) and deep-UV spectral region are of great demand and have attracted considerable attention for their important applications in areas as diverse as photolithography, laser micromachining, and advanced instruments. [1][2][3][4][5][6] To date, KBe 2 BO 3 F 2 (KBBF) is the sole NLO material that can output the deep-UV coherent radiation by a direct SHG process. However, the practical application was restricted by its intrinsic drawbacks including toxic BeO and layered growth habit.…”

Section: Introductionmentioning

confidence: 99%

To improve the key properties of nonlinear optical crystals assembled with tetrahedral functional building units

et al. 2021

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Section: Introductionmentioning

confidence: 99%

To improve the key properties of nonlinear optical crystals assembled with tetrahedral functional building units

et al. 2021

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“…Analogous to carbon atoms in graphite, boron atoms can be three-coordinated with oxygen to form the strongly covalent [BO 3 ] groups. The planar [BO 3 ] groups are likely to further connect with other groups to form infinite two-dimensional layers 21,22 , by which the anomalous mechanical properties have been observed, e.g., in KBe 2 BO 3 F 2 23 and in AEB 2 O 4 17 .…”

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confidence: 99%

Anomalous mechanical materials squeezing three-dimensional volume compressibility into one dimension

et al. 2020

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Anomalous mechanical materials, with counterintuitive stress-strain responding behaviors, have emerged as novel type of functional materials with highly enhanced performances. Here we demonstrate that the materials with coexisting negative, zero and positive linear compressibilities can squeeze three-dimensional volume compressibility into one dimension, and provide a general and effective way to precisely stabilize the transmission processes under high pressure. We propose a “corrugated-graphite-like” structural model and discover lithium metaborate (LiBO2) to be the first material with such a mechanical behavior. The capability to keep the flux density stability under pressure in LiBO2 is at least two orders higher than that in conventional materials. Our study opens a way to the design and search of ultrastable transmission materials under extreme conditions.

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“…Secondly, the Sr 2 + cations with al arger ion radius are bonded to eight oxygen atoms to form SrO 8 polyhedra without equatorial oxygen atoms, which results in ac omplicated and misaligneda rrangement of BO 3 groups around the SrO 8 polyhedra. [20] The connectivity of BO 3 groups and SrO 8 polyhedra is presented in Figure S1 in the Supporting Information. To verify the rationality and correctness of the structure, the calculated bond valence sum (BVS) values for Li(1), K(1), Sr(1)-Sr(4), and B(1)-B(4) are + 1.061, + 0.864, + 1.731-2.336, and + 2.902-2.964, respectively,w hereas those for O(1)-O(9) are À2.007, À1.855, À1.893, À2.102, À2.186, À1.987, À2.203, À2.094,a nd À1.922,r espectively (see Ta bleS4i nt he Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

The First Examples of Lithium‐Containing Mixed‐Alkali Strontium Borates with Different Dimensional Anionic Architectures and Short Cutoff Edges

Yang

et al. 2018

Chemistry A European J

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Three new mixed-alkali strontium borates, Li KSr (BO ) , Li Rb Sr (BO ) , and Li Rb SrB O , have been synthesized by the high-temperature solution method by adjusting the molar ratios of the reactants. They represent the first examples of lithium-containing mixed-alkali strontium borates. The structures of the three compounds show different dimensional anionic architectures, with Li KSr (BO ) and Li Rb Sr (BO ) possessing isolated BO units, whereas Li Rb SrB O has three-dimensional (3D) open frameworks with three types of channels occupied by the strontium and rubidium atoms. Interestingly, Li KSr (BO ) is the first example of a chain composed of LiO linked through the sharing of vertexes and edges. However, in Li Rb Sr (BO ) , isolated LiO units can be observed, which is also rare in borates. Detailed analysis and comparisons of the structures of the anhydrous mixed-alkali- and alkaline-earth-metal borates and nine-polymeric fundamental building blocks have been made. Furthermore, Li Rb Sr (BO ) and Li Rb SrB O present short cutoff edges (<190 nm), which was confirmed by the UV/Vis/NIR diffuse reflectance spectra. These attributes make them attractive for deep-UV optical materials.

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The role of cations in second-order nonlinear optical materials based on π-conjugated [BO 3 ] 3− groups

Cited by 156 publications

References 135 publications

To improve the key properties of nonlinear optical crystals assembled with tetrahedral functional building units

To improve the key properties of nonlinear optical crystals assembled with tetrahedral functional building units

Anomalous mechanical materials squeezing three-dimensional volume compressibility into one dimension

The First Examples of Lithium‐Containing Mixed‐Alkali Strontium Borates with Different Dimensional Anionic Architectures and Short Cutoff Edges

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