Showing papers by "Jiang-Gao Mao published in 2020"
TL;DR: This work provides a new route to design SHG crystals with stable 3D anionic structures from low dimensional structural building units.
Abstract: The first alkali-metal vanadium iodate fluoride, CsVO2 F(IO3 ), with a novel 3D anionic framework, has been rationally designed and hydrothermally synthesized. The 3D [VO2 F(IO3 )]- framework in CsVO2 F(IO3 ) is built from 0D Λ-shaped cis-[VO3 F(IO3 )2 ]4- polyanions via corner-sharing of oxo anions and bridging of the iodate groups. CsVO2 F(IO3 ) displays both a strong second-harmonic generation (SHG) 1.1 times as strong as KTiOPO4 (KTP) under 2.05 μm laser radiation and high laser-induced damage threshold (LIDT) of 107.9 MW cm-2 . This work provides a new route to design SHG crystals with stable 3D anionic structures from low-dimensional structural building units.
74 citations
TL;DR: This work reports an organometallic compound, ferrocenium tetrachloroferrate, undergoing a ferroelastic phase transition at 407.7 K with large spontaneous strain and a narrow band gap of 1.61 eV, which is the first molecular ferroELastic with such a high Curie temperature (Tc) and narrow band gaps (EV) to be reported.
Abstract: Due to the intriguing chemical variability and structure–property flexibility, molecular materials with striking multifunctional characteristics, including tunable physical, chemical, optical, and ...
42 citations
TL;DR: The first polar molybdenum oxyfluoride in selenite and tellurite systems was achieved by partial fluorination of MoO6 octahedra under the MoO2F2F)2(SeO3) and MoO3F2(TeO3), respectively, in this article.
Abstract: The first polar molybdenum oxyfluoride in selenite and tellurite systems, namely, Ba(MoO2F)2(SeO3)2 and Ba(MoO2F)2(TeO3)2, was achieved successfully by partial fluorination of MoO6 octahedra under ...
33 citations
TL;DR: The first polar alkaline-earth metal molybdenum iodate, Ba2[MoO3(OH)(IO3)2]IO3, with a Λ-shaped functional motif, was rationally designed as discussed by the authors.
Abstract: The first polar alkaline-earth metal molybdenum iodate, Ba2[MoO3(OH)(IO3)2]IO3, with a Λ-shaped [MoO3(OH)(IO3)2]3– functional motif, was rationally designed. A zero-dimensional (0D) [MoO3(OH)(IO3)2...
31 citations
TL;DR: The first divalent-metal iodate-phosphate, Pb2(IO3)(PO4), has been prepared via the strategy of introducing (IO3)- into phosphate using a unique 3D network where [Pb( IO3)]∞+ and [P b(PO4]∞- layers are alternatively interconnected.
29 citations
TL;DR: Recent developments of selenite and tellurite based second-harmonic generation materials are reviewed and challenges in creating new high powered SHG materials and perspectives for future work are presented.
Abstract: Metal selenites and tellurites have demonstrated excellent second-harmonic generation (SHG) properties in inorganic solid compounds, such as strong SHG efficiency, a wide transparent range, appropriate birefringence, etc. During the past ten years, important progress has been achieved in this field. The largest SHG efficiency of selenites and tellurites reached 13.5 × KDP (BiFSeO3) and 2 × KTP (CdTeMoO6), respectively. The shortest UV absorption edge of tellurites has been pushed to 205 nm in BaF2TeF2(OH)2 successfully. In terms of the chemical compositions, research studies are no longer concentrated on d0 transition metal compounds only, and the most electronegative fluorine has been used increasingly to widen the optical bandgaps and enrich the structural types of the materials. This paper reviewed the recent developments of selenite and tellurite based SHG materials. Challenges in creating new high powered SHG materials and perspectives for future work are presented.
20 citations
TL;DR: Two new inorganic metal borate derivatives, Sr5TeO2(BO3)4 and NaSr5 (BO3)(SiO4)2, have been obtained through a high temperature solid reaction method.
Abstract: Two new inorganic metal borate derivatives, Sr5TeO2(BO3)4 and NaSr5(BO3)(SiO4)2, have been obtained through a high temperature solid reaction method. Sr5TeO2(BO3)4 crystallizes in a tetragonal space group of P4/mnc featuring a three-dimensional (3D) structure composed of a porous 3D strontium framework stabilized by the unique zero-dimensional (0D) [TeO2(BO3)4]10− anions. NaSr5(BO3)(SiO4)2 crystallizes in a monoclinic space group of P21/c with a 3D structure consisting of a splendid strontium 3D framework strengthened by isolated BO3 and SiO4 groups. The sodium cations located in the empty space of the structure. Thermal stability analyses, optical property measurements and theoretical studies of the compounds were performed. Refractive index calculations revealed that the birefringence of Sr5TeO2(BO3)4 and NaSr5(BO3)(SiO4)2 is 0.048 and 0.029, respectively, at 1064 nm.
15 citations
TL;DR: In this article, three new isostructural mixed anionic tellurites, namely, Pb2Al3F3(Te6F2O16) (1), Ba2Ga3F2/AlO4F2 octahedral chains, were synthesized successfully by hydrothermal reactions.
13 citations
TL;DR: Frequency doubling measurements showed that BiGa(SeO3)3 presented an apparent SHG signal comparable to the commercial KDP and can realize phase matching and the lone pair anionic groups of SeO32- made the major contribution according to the SHG density analyses.
Abstract: The search of novel second-harmonic generation crystals in gallium selenite systems results in three new compounds of MGa2(SeO3)4 (M = Sr, Pb) and BiGa(SeO3)3. The isostructural MGa2(SeO3)4 (M = Sr...
10 citations