期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 57, 期 28, 页码 8619-8622出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201804354
关键词
carbonates; nonlinear optics; peroxovanadates; rubidium; second harmonic generation
资金
- National Natural Science Foundation of China [21501161, 21401178]
- National Research Foundation of Korea - Ministry of Science and ICT [2014M3A9B8023478, 2015R1A1A1A05027845, 2016R1A2A2A05005298]
A nonlinear optical (NLO) carbonatoperoxovanadate, Rb3VO(O-2)(2)CO3, was synthesized through a simple solution-evaporation method in phase-pure form. Single-crystal X-ray diffraction revealed that the structure of Rb3VO-(O-2)(2)CO3 consists of important noncentrosymmetric (NCS) chromophores, that is, pi-delocalized (CO3)(2-) groups, a second-order Jahn-Teller (SOJT) distortive V5+ cation, and pi-localized distorted O-2(2-) groups, as well as charge-balancing polarizable Rb+ ions. The powder second-harmonic generation (SHG) measurements indicated that Rb3VO(O-2)(2)CO3 is phase-matchable (TypeI) and exhibits a remarkably strong SHG response circa 21.0 times that of potassium dihydrogen phosphate (KDP), which is the largest efficiency observed among carbonate NLO materials. First-principles calculation analysis suggests that the extremely large SHG response of Rb3VO(O-2)(2)CO3 is attributed to the synergistic effect of the cooperation of all the constituting NCS chromophores.
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