期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 139, 期 50, 页码 18397-18405出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.7b11263
关键词
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资金
- National Natural Science Foundation of China [21501194, 51425206, 51602341, 91622107]
- National Basic Research Program of China [2014CB648400]
- Xinjiang Key Laboratory Foundation [2014KL009]
- National Key Research Project [2016YFB1102302, 2016YFB0402104]
- Science and Technology Project of Urumqi [P161010003]
A chemical cosubstitution strategy was implemented to design potential ultraviolet (UV) and deep-UV nonlinear optical (NLO) materials. Taking the classic beta-BaB2O4 as a maternal structure, by simultaneously replacing the Ba2+ and [B3O6](3- )units with monovalant (K+), divalent (alkaline earth metal), trivalent (rare-earth metal, Bi3+) ions, and the [B5O10](5- )clusters through two different practical routes, 12 new mixed-metal noncentrosymmetric borates (K7MRE2)-R-II(B5O10)(3) (M-II = Ca, Sr, Ba, K/RE0.5; RE = Y, Lu, Gd) as well as (K7MBi2)-Bi-II(B5O10)(3) (M-II = Pb, Sr) were successfully designed and synthesized as high-quality single crystals. The selected K7CaY2(B5O10)(3), K7SrY2(B5O10)(3), and K7BaY2(B5O10)(3 )compounds were subjected to experimental and theoretical characterizations. They all exhibit suitable second-harmonic generation (SHG) responses, as large as that of commercial KH2PO4 (KDP), and also exhibit short UV cutoff edges. These results confirm the feasibility of this chemical cosubstitution strategy to design NLO materials and that the three selected crystals may have potential application as UV NLO materials.
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