Inorganic Chemistry Frontiers
·
2023
·Vol. 10
·期 21
·6253-6261
·
IF 7
Hongshan Wang,Xueting Pan,Wang Zhao,Yu Chu,Junjie Li
Developing high-performance infrared (IR) nonlinear optical (NLO) materials is essential for modern laser technology, but challenging due to the competition of the NLO coefficient and band gap in the structure. Based on the “electronic structure engineering bucket effect” and systematic experimental investigations on the AIIBIICIVD4VI family, three new alkaline earth metal sulfides Mg0.6Cd1.4GeS4, CaCdGeS4, and BaZnGeS4 have been developed. The compounds show a structural change from the Pnma (CaCdGeS4) to the Fdd2 (BaZnGeS4) space group. Among them, BaZnGeS4 exhibits a phase-matching NLO response of ∼0.8× AGS, a wide band gap of 3.36 eV, and a high laser-induced damage threshold of ∼5.4× AGS, achieving a good balance between the NLO response and band gap, which makes it an excellent IR NLO material. Theoretical calculations show that the NLO effects of BaZnGeS4 originated from the [ZnS4] and [GeS4] NLO-active motifs. The results indicate that BaZnGeS4 is a promising anti-laser damage IR NLO material and enriches the chemical diversity of the AIIBIICIVD4VI family.
研究领域:
材料科学
·
光学工程
·
固体物理
✓ 已验证
DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2023
·
IF 4.6
Yuting Wang,Xiong Shen,Chenggang Yuan,Bingkun Chen,Lin Chen,Zhongming Wang,Fei Hu,Qiuyun Ouyang
Halide perovskite (Cs 3 Cu 2 Br 5 ) is synthesized by a thermal injection method. The X-ray diffraction (XRD) proves that the Cs 3 Cu 2 Br 5 crystal phase is an intersection phase. The Cs 3 Cu 2 Br 5 organic glasses are fabricated by dispersing Cs 3 Cu 2 Br 5 materials in methyl methacrylate (MMA). The nonlinear absorption (NLA) and the nonlinear refraction (NLR) performances of Cs 3 Cu 2 Br 5 /PMMA organic glasses are measured via the open-aperture (OA) and the closed-aperture (CA) Z-scan technique, respectively. The samples show typical reverse saturable absorption (RSA) and self-focusing effect with the change of input energy (40–72 μJ). Meanwhile, the room-temperature photo-luminescence (PL) measurement reveals light emission for Cs 3 Cu 2 Br 5 . The effects on nonlinear optical (NLO) properties are investigated by controlling the input energy and the amount of the sample. The Cs 3 Cu 2 Br 5 /PMMA organic glasses exhibit excellent NLA and NLR properties. The NLA coefficient of (Cs 3 Cu 2 Br 5 ) 18 /PMMA organic glass is much higher than those of lead-containing perovskite such as CsPbCl 3 and CsPbBr 3 nanosheets . This results in Cs 3 Cu 2 Br 5 /PMMA organic glasses show superior optical limiting (OL) performance. The Cs 3 Cu 2 Br 5 perovskite materials show great potential in devices such as light-emitting diodes and optical switches.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
Nature Catalysis
·
2024
·Vol. 7
·期 6
·666-677
·
IF 42.8
Dou Xiaomeng,Yan Tao,Qian Lixiang,Hou Huaming,Lopez-Haro Miguel,Marini Carlo,Agostini Giovanni,Meira Debora M.,Zhang Xiangjie,Zhang Liang,Cao Zhi,Liu Lichen
Achieving the regioselective hydroformylation of linear α-olefins to linear aldehydes using solid catalysts with regioselectivities comparable to the corresponding homogeneous process is a great challenge in the chemical industry. Despite the tremendous efforts devoted to this research topic, most of the reported heterogeneous metal catalysts still give considerably lower regioselectivities than well-established homogeneous metal catalysts. Here we show the design of efficient Rh-zeolite catalysts, in which subnanometre Rh clusters are selectively confined in the sinusoidal ten-membered-ring channels of MFI zeolite, for the hydroformylation of long-chain linear α-olefins (C 6 –C 12 ) into linear aldehydes with very high linear-to-branched aldehyde ratios (up to 400). The exceptional catalytic performances result from the involvement of the MFI zeolite framework as a rigid solid ligand that accommodates subnanometre Rh clusters in the sinusoidal channels of the MFI zeolite.
研究领域:
化学工程
·
催化
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2023
·Vol. 10
·期 11
·3319-3325
·
IF 7
Jing-Li Qi,Jiajing Wu,Yue Guo,Zhong-Ping Xu,Wenlong Liu,Sheng-Ping Guo
The emerging organic–inorganic hybrid metal halides feature unique optical and electronic properties, are easily grown and have flexible crystal structures, making them a class of promising next-generation nonlinear optical (NLO) and ferroelectric materials. Herein, we successfully synthesized two centimeter-level zero-dimensional copper halide organic–inorganic hybrids (C20H20P)CuX2 (X = Cl, Br) that are crystallized in the monoclinic noncentrosymmetric P21 space group. Their structures contain rare quasi-linear [CuX2]– anions and [C20H20P]+ cations. (C20H20P)CuCl2 and (C20H20P)CuBr2 crystals show phase-matchable NLO effects around 1.1 and 0.87 times that of benchmark KDP, respectively. These (C20H20P)CuX2 materials are the first NLO-active examples in the hybrid copper(I) halide family containing a quasi-linear CuX2 unit.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
OPTICAL MATERIALS
·
2024
·
IF 3.8
Zulfiqar Ali,Fei Hu,Muhammad Sohail,Intikhab Alam,Nimra Razzaq,Qiuyun Ouyang
The Bi 2 WO 6 /ZnO (BWO/ZnO) composites were synthesized by using a hydrothermal method. Then, the BWO/ZnO composites were poured into methyl methacrylate through polymerization to make the BWO/ZnO/PMMA organic glasses (OGs) with different amounts. The X-ray diffraction (XRD) and transmission electron microscopy (TEM) were used to investigate the crystal structures and morphology size of BWO/ZnO composites. The nonlinear absorption (NLA), nonlinear refraction (NLR) and optical limiting (OL) properties were systematically investigated by using the Z-scan technique at 532 nm. The BWO/PMMA and BWO/ZnO/PMMA OGs may transform from saturable absorption (SA) to reverse saturable absorption (RSA) by varying the input energy. The NLA, NLR and OL performances of the BWO/ZnO/PMMA OGs are superior to those of the BWO/PMMA OGs and other bismuth-based metal oxides. The synergistic interaction of BWO and ZnO plays a crucial role in the BWO/ZnO/PMMA OGs. The NLA mechanisms were analyzed using an energy-level model.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
OPTICAL MATERIALS
·
2022
·
IF 3.754
Chenggang Yuan,Yuting Wang,Xiong Shen,Bingkun Chen,Fei Hu,Lin Chen,Zhongming Wang,Qiuyun Ouyang
CsPbBr 3 perovskite quantum dots (QDs) material was synthesized by a hot injection method. CsPbBr 3 /PMMA organic glasses (OGs) were fabricated by dispersing CsPbBr 3 QDs in methyl methacrylate (MMA). The open-aperture (OA) and closed-aperture (CA) Z-scan technique were used to investigate the nonlinear absorption (NLA) and nonlinear refraction (NLR) property of CsPbBr 3 /PMMA organic glasses, respectively. The changeover from saturable absorption (SA) to reverse saturable absorption (RSA) was observed in CsPbBr 3 /PMMA organic glasses with the increasing of the input energy (30–110 μJ). When the input energy is 110 μJ, the NLA coefficient is β = 1.43 × 10 2 cm GW −1 and the NLR coefficient is γ = −4.5 × 10 −4 cm 2 GW −1 . CsPbBr 3 /PMMA organic glasses exhibit excellent optical limiting (OL) performance due to the enhanced NLA and NLR effects. The results show that CsPbBr 3 QDs can be used for laser protection.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
CRYSTAL GROWTH & DESIGN
·
2018
·
IF 3.972
Conggang Li,Xiangxin Tian,Zeliang Gao,Qian Wu,Peng Zhao,Youxuan Sun,Chengqian Zhang,Shaojun Zhang,Deliang Cui,Xutang Tao
Acentric compounds with a layered structure are of current interest owing to their advanced functional properties for technical applications. However, the growth of bulk single crystals of acentric materials with a quasi-two-dimensional structure is challenging, which severely hinders the intrinsic properties investigation and optoelectronic applications of these materials. Herein, we report the controlled growth of bulk CdTeMoO6 single crystals with a layered structure and the investigation of their linear and nonlinear optical properties. High quality CdTeMoO6 single crystals with dimensions of ∼26 × 10 × 9 mm3 were successfully grown through the modified top-seeded solution growth method using TeO2-MoO3 as a flux. The transparent range of CdTeMoO6 single crystals is in the range of 0.345–5.40 μm, and with large birefringence (Δn = no – ne = 0.2868–0.2219 from 514 nm to 1.5467 μm). In addition, the nonlinear optical (NLO) coefficient d36 of CdTeMoO6 single crystals was measured to be 8.5 pm/V using Maker Fringe techniques. We also found CdTeMoO6 is type-I phase-matchable based on the calculated phase-matching curves. Our results indicated that CdTeMoO6 single crystal is an excellent birefringent material combined with a promising NLO material for optoelectronic applications.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2016
·Vol. 4
·期 36
·8490-8495
·
IF 5.066
Liang Bai,Shi Qiao,Yu Fang,Jianguo Tian,J. Mcleod,Yinglin Song,Hui Huang,Yang Liu,Zhenhui Kang
We quantitatively investigate the nonlinear optical (NLO) property of carbon nanodots (CNDs, less than 10 nm) by the Z-scan technique using a tunable 532 nm nanosecond laser system. These CNDs were fabricated by an electrochemical etching method from graphite rods. Our results suggested that the third-order nonlinear susceptibility χ(3) of CNDs is strongly dependent on the diameter of the CNDs apparently; the nonlinear refractive index γ decreased as the size of CNDs decreased, while the nonlinear absorption coefficient β showed an opposite tendency to γ. We further demonstrated that the carboxyl group on the CND surface plays a key role and has significant impact on the third-order nonlinear susceptibility χ(3).
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
DALTON TRANSACTIONS
·
2016
·Vol. 45
·期 18
·7627-7633
·
IF 4.177
Molin Zhou,Chao Li,Xiaoshuang Li,Jiyong Yao,Yicheng Wu
Three new compounds (i.e., K2Sn2ZnSe6, Na2Ge2ZnSe6, and Na2In2GeSe6) with intriguing structural diversity and nonlinear optical properties were discovered for the first time. They crystallize in space groups P4/ncc, I4/mcm and Cc, respectively. In K2Sn2ZnSe6 and Na2Ge2ZnSe6, the [Sn(Ge)Se4] tetrahedra and [ZnSe4] tetrahedra are linked via edge-sharing to build up a 1D [Sn2ZnSe6] infinite chain separated by K+(Na+) cations along the c direction, while the structure of Na2In2GeSe6 is an interesting three-dimensional framework composed of [InSe4] and [GeSe4] tetrahedra via corner-sharing with Na+ cations in the cavities. The experimental optical band gaps of these compounds were determined as 1.71(2) eV, 2.36(4) eV and 2.47(2) eV, respectively, according to UV-vis-NIR diffuse reflectance spectroscopy. Interestingly, in addition to the large band gap (1.80 eV for AgGaSe2, as a comparison), Na2In2GeSe6 exhibits phase-matchable nonlinear optical (NLO) properties with a powder second harmonic generation signal about 0.8 times that of AgGaS2. Moreover, Na2In2GeSe6 melts congruently at a rather low temperature of 671 °C, which suggests that bulk crystals can be easily obtained by the Bridgman–Stockbarger method. Our preliminary results indicate that Na2In2GeSe6 has promising applications in IR nonlinear optics.
研究领域:
材料科学
·
晶体学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2021
·
IF 3.498
Fang-Yu Yuan,Chen-Sheng Lin,Yi-Zhi Huang,Hao Zhang,An-Yi Zhou,Guo-Liang Chai,Wen-Dan Cheng
In this work, we chose to explore the infrared (IR) nonlinear optical (NLO) materials centering on Cd and Ge elements, and finally synthesized a new IR NLO quaternary selenide BaCdGeSe 4 . Compound BaCdGeSe 4 crystallizes in non-centrosymmetric (NCS) space group Fdd 2 (No. 43), and it is built by parallel two-dimensional (2D) anionic [CdGeSe 4 ] 2- layers with the cation Ba 2+ embedded between the layers. Under the 2050 nm laser excitation, compound BaCdGeSe 4 appears type-I phase-matchable behavior and its second-harmonic generation intensities is about 0.5 times of AgGaS 2 .
研究领域:
材料科学
·
晶体学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY
·
2022
·
IF 5.436
Yuanyu Yang,Yao Guo,Bingbing Zhang,Ting Wang,Yi-Gang Chen,Xiaohui Hao,Xiaoxiu Yu,Xian-Ming Zhang
The exploration of nonlinear-/linear-optical crystal materials with high performance is an extremely difficult research project. Herein, the two new lead tellurite crystals BaPbTe2O6 and PbVTeO5F were successfully obtained through a facile hydrothermal synthesis strategy. BaPbTe2O6 lies in the noncentrosymmetric (NCS) and chiral orthorhombic space group P212121, featuring a unique ∞1[PbTe2O6] chain consisting of the PbO4 and TeO3 building units, while PbVTeO5F belonging to the centrosymmetric (CS) orthorhombic space group Pbca manifests a 2D layer made up of ∞1[PbO4F2] chains and novel [V2Te2O10F2] clusters. Further, a systematic analysis of lead tellurites finds that the coordination geometries of the Pb atom exert a considerable influence on the connection modes of Pb–O and Te–O building units. BaPbTe2O6 shows a great second-harmonic-generation (SHG) effect of ∼5× the benchmark KH2PO4 (KDP) and a large optical birefringence of 0.086 at 590 ± 3 nm. PbVTeO5F demonstrates a remarkably larger birefringence of 0.142 at 590 ± 3 nm, benefiting from the introduction of the VO5F octahedral unit. Theoretical studies reveal that the large SHG and birefringence in BaPbTe2O6 can be attributed to TeO3 and PbO4 polyhedra with active lone pairs, while the remarkably enlarged birefringence in PbVTeO5F is attributable to the highly distorted octahedral VO5F. The functional orientations of active building units may offer a practical insight into the design of the desired optical functional materials.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY
·
2021
·
IF 5.165
Wenfeng Zhou,Qing Zhang,Wen-Dong Yao,Huaiguo Xue,Sheng-Ping Guo
One of the key scientific issues for exploration of novel infrared nonlinear optical (NLO) crystals is to obtain ones with good hybrid NLO behaviors. Herein, we report four diamond-like Ag-based sulfides via stepwise Li substitution of Ag in Ag2ZnSnS4, including Ag2ZnSnS4 (1), (Li1.22Ag0.78)ZnSnS4 (2), (Li1.58Ag0.42)ZnSnS4 (3), and Li2ZnSnS4 (4). With the increase of Li content, the sulfide’s noncentrosymmetric crystal structure changes from tetragonal I42m for 1, to orthorhombic Pmn21 for 2 and 3, and to monoclinic Pn for 4. Accordingly, their NLO responses are improved along with the increase of Li content, viz. from non-NLO-active for 1, to non-phase-matchable for 2 and 3, and to phase-matchable for 4. Their optical band gaps also increase regularly. The relationship between their chemical compositions, crystal structures, and NLO activities is investigated by means of chemical structural analysis and theoretical calculation. This work offers a new systematic case for designing promising NLO-active compounds via rarely adopted cation’s stepwise partial substitution and understanding the chemical composition–structure–NLO property relationship.
研究领域:
材料科学
·
化学
✓ 已验证
DOI
PubMed
高影响因子
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