Journal of the American Chemical Society
·
2021
·
IF 15.419
Jing Lu,Xin Liu,Min Zhao,Xue-Bin Deng,Ke-Xin Shi,Qian-Ru Wu,Ling Chen,Li-Ming Wu
We herein report a novel semiorganic NLO material, (C5H6ON)+(H2PO4)−, 4HPP, showing promising excellent properties in the important solar-blind UV region where LAP and its deuterated form DLAP are the only commercialized semiorganic materials. For the first time, the 4-hydroxypyridine (4HP+, (C5H6ON)+) cation is identified as NLO active and how to eliminate the dipole–dipole interaction to avoid the unwanted center-symmetry-trap caused by the polar-induced susceptibility is well demonstrated. Remarkably, 4HPP exhibits competitive and even better properties compared with LAP that include better thermal stability (decomposition at 166 vs 112 °C of LAP); wider transparency range (0.26–1.50 μm); very strong SHG response (3 × KDP); a suitable large birefringence (Δncal = 0.25 vs 0.075 of LAP); and a high laser-induced damage threshold (2.2 × KDP). First-principles calculations show that the π-conjugated organic (4HP)+ cation governs the optical anisotropy, whereas the synergy of the organic and inorganic moieties dominates the SHG process. Our discovery points out a new path for the rational design of high performance semiorganic materials that require an acentric structure.
研究领域:
材料科学
·
非线性光学
·
无机化学
·
理论化学
·
光子学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2019
·Vol. 7
·期 15
·4459-4465
·
IF 6.641
Yang-Jie Lin,Bin-Wen Liu,Run Ye,Xiao-Ming Jiang,Long-Qi Yang,Hui-Yi Zeng,Guo-Cong Guo
Two new infrared (IR) nonlinear optical (NLO) chalcogenides, SrCdSnQ4 (Q = S and Se) (1 and 2), were obtained by mixing NLO-active metal chalcogenides and d10 metal tetrahedral motifs in an alkali metal-containing system. Their structures are constructed with edge- and corner-sharing CdQ4 and SnQ4 (Q = S and Se) units to form two-dimensional (CdSnQ4)2− layers, between which are embedded with Sr2+. Compounds 1 and 2 have moderate band gaps of 2.05 and 1.54 eV, respectively. They exhibit strong second-harmonic generation intensities that are comparable to that of the benchmark AgGaS2 using a 2040 nm laser. Furthermore, their laser-induced damage thresholds are 10 and 5 times higher than that of AgGaS2, respectively. The strong NLO efficiency of these two compounds can be ascribed to SnQ4 tetrahedra with a synergetic enhancement in the large distortion of CdQ4 tetrahedra, shedding light on the exploration of new IR NLO materials with mixed NLO-active and synergetic distorted motifs.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY
·
2021
·
IF 5.165
Yuan-Bin Fang,Rui-Biao Fu,Hong-Xin Tang,Qi-Rui Shui,Zu-Ju Ma,Xin-Tao Wu
Nonlinear-optical (NLO) crystal is an important photoelectric functional material. In this work, a new NLO titanium iodate, (H3O)2Ti(IO3)6, along with Ti(IO3)4 has been synthesized under facile conditions. The space group of (H3O)2Ti(IO3)6 is the chiral noncentrosymmetric group R3 (No. 146), with an interesting three-dimensional framework, while that of Ti(IO3)4 is the centrosymmetric space group P1̅ (No. 2) containing one-dimensional chains. Thermogravimetric analysis shows that (H3O)2Ti(IO3)6 and Ti(IO3)4 have no weight loss below 220 and 390 °C, respectively. In addition, (H3O)2Ti(IO3)6 not only is thermally stable up to 200 °C in an air atmosphere but also is stable in water. (H3O)2Ti(IO3)6 has a moderate-intensity second-harmonic-generation (SHG) response (1.4×KDP), a large laser-induced damage threshold (46×AgGaS2), and high transmittance in the wavelength ranges of 0.5–1.4 and 2.5–10 μm. Both local dipole moment and systematic theoretical calculations reveal that the SHG response of (H3O)2Ti(IO3)6 is mainly because of the combined effect of [TiO6] octahedra and IO3 and IO4 units. In a word, (H3O)2Ti(IO3)6 exhibits good NLO performances, as well as water resistance and facile growth of a single crystal with high quality, indicating its potential application as NLO materials in the visible and mid-IR regions, especially the visible region.
研究领域:
材料科学
·
光学
·
晶体学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small
·
2023
·Vol. 20
·期 3
·2306459
·
IF 13.3
Shuoxing Yang,Hongping Wu,Zhanggui Hu,Jiyang Wang,Yicheng Wu,Hongwei Yu
Nonlinear optical (NLO) crystals are indispensable for the solid-state lasers for their ability to expand wavelength spectral to the regions where the directing lasing is difficult or even impossible, yet the rational design of a high-performance NLO crystal remains a great challenge owing to the severe structural and properties’ requirements. Herein, a new noncentrosymmetric (NCS) and polar gallium iodate, LiGa(IO 3 ) 4 , with a novel 2D anionic layer, is successfully designed and synthesized by the aliovalent substitution strategy based on classic α-LiIO 3 . The 2D [Ga(IO 3 ) 4 ] ∞ − layer in LiGa(IO 3 ) 4 is built from the GaO 6 octahedra and highly polarizable units IO 3 . Compared with its parent compound, the partial replacement of A-site Li + cation with main group Ga 3+ cation facilitates LiGa(IO 3 ) 4 to possess excellent NLO properties, including the large second-harmonic generation (SHG) response (14 × KH 2 PO 4 (KDP) @ 1064 nm), wide bandgap (4.25 eV), large birefringence (0.23 @ 1064 nm), and wide optical transparency from UV to mid-IR. These reveal that LiGa(IO 3 ) 4 will be a promising NLO crystal.
研究领域:
材料科学
·
晶体工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DYES AND PIGMENTS
·
2018
·
IF 3.767
Qiuli Cheng,Xiaoyu Shi,Chuangyang Li,Yuhang Jiang,Zuosen Shi,Jiawei Zou,Xuesong Wang,Xibin Wang,Zhanchen Cui
In this paper, alkyl groups with different lengths are introduced to the two-dimensional spindle-type chromophores as the steric isolators to improve the poling efficiency and long term stability of the poled polymers for second-order nonlinear optical materials . The structure and thermal properties of alkyl functionalized chromophores are characterized by the 1 H NMR, FT-IR, UV–Vis, DSC , TGA et al. The chromophores with different alkyl groups present extremely similar maximum absorbance wavelength (480 nm), which means they have very similar first-order hyperpolarizability . Guest-host polymer doped with chromophores has been prepared. Those materials display different glass transition temperatures and good thermal stability . According to the electro-optic coefficients studies and poling efficiency results, chromophores with longer alkyl side chain groups exhibit better poling efficiency and larger electro-optic coefficients. Especially for the chromophores with octyl group , the poling efficiency increases up to 3 times compared to the reference chromophore 2-(3-{2,5-Phenylmethanol-4-[4-(dimethylamino)styryl]-styryl-5,5-dimethylcyclohex-2-enylidene)malononitrile (STC), while the corresponding electro-optic coefficient of the poled polymers increases up to 4 times, indicating a significant effect of the isolate groups on improving the poling efficiency.
✓ 已验证
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 22
·18178-18185
·
IF 3.289
Chuangyang Li,Ming Li,Yao Li,Yingchao Zhang,Zhenzhen Cai,Zuosen Shi,Xibin Wang,Daming Zhang,Zhanchen Cui
Novel polyurethanes NLO materials (IPDI-1 to IPDI-3) containing different spindle-like chromophores were designed and synthesized. Spindle-like chromophores (OHSTC-1 to OHSTC-4) bearing 3,4,5-trifluorophenyl, phenyl, trifluoromethylphenyl and 4-methoxyphenyl on the conjugated bridge as lateral groups, respectively, have been successfully synthesized. Selected chromophores were used as monomers to prepare polyurethane NLO materials. The chemical structure of the chromophores and polyurethanes was characterized by 1H-NMR, FT-IR and UV-Vis spectroscopy. Thermal and nonlinear optical activity characterizations of the chromophores and polyurethanes IPDI-1 and IPDI-2 were carried out. Both the chromophores and the polyurethanes NLO materials possessed relatively high thermal stability. The chromophores OHSTC-1 and OHSTC-2 displayed high thermal stability with 5% weight loss temperature (Td) as 324 °C and 327 °C, respectively. Novel polyurethanes NLO materials containing different spindle-like chromophores could be oriented without any other doped polymers and exhibited a satisfactory temporal stability in the NLO response (the electro-optic coefficients of IPDI-2 maintained up to 90% of the initial value after being baked at 85 °C in air for 200 hours).
✓ 已验证
DOI
高影响因子
CARBON
·
2024
·
IF 10.5
Dandan Lu,Jie Zhang,Mingzhi Deng,Xiaoqian Liu,Ziyao Liu,Keyang Yin,Hongguang Li
Nonlinear optical (NLO) materials are useful for applications varying from modulation of optical signals to cancer therapy. Besides inorganic crystals and organic molecules with defined structures, carbonized products have emerged as a new generation of materials showing good NLO properties. Due to the small sizes, the NLO performance of such materials mainly originates from nonlinear absorption. Obtaining a product with a high content of π-conjugated moiety is the key to improving the NLO performance. By using aldehydes bearing π units as the precursors, in this work we synthesized three polymeric nanoparticles (PNPs) through one-step pyrolysis, which also have large contents of π-conjugated structures. It was found that a larger size of π unit in the precursor led to a higher content as well as the size of the π-conjugated structure, which induced a bathochromic shift in the emission and an improved performance in the NLO response. When embedded in polymethylmethacrylate films, the products showed reverse saturable absorption (RSA) behavior with β up to 4.20 × 10 −6 m W −1 and optical limit threshold down to 0.0012 J cm −2 , which are comparable to those of metal-doped counterparts. This work gives deep insight on the structure-property relationship of the pyrolyzed products from π-conjugated small molecules, which is also useful for the preparation of task-specific carbon dots (CDs) or PNPs in future.
研究领域:
材料科学
·
光学
·
纳米技术
·
高分子科学
✓ 已验证
产品关联
DOI
高影响因子
DALTON TRANSACTIONS
·
2026
·
IF 3.3
Jingsha Xu,Xiaofeng Zhang,Shanshan Chen,Weiyi Wang,Wenbo Qiu,Weizhao Cai,Liujiang Zhou
Nonlinear optical (NLO) crystals serve as indispensable components in laser technology. Many modifications of sulfate-based NLO materials rely on introducing a single type of functional cation, which in some cases leads to an imbalanced improvement in either NLO response or birefringence. To enable simultaneous improvement of these key properties, we designed and synthesized a novel sulfate compound, Nb2O2(TeO3)2(SO4), using a double second-order Jahn-Teller (SOJT) strategy that introduces both Nb5⁺ (d0 cation) and Te4+ (lone-pair cation) into the sulfate framework. Remarkably, the introduction of distorted [NbO6] octahedra and [TeO3] pyramids enables the material to achieve a remarkable birefringence of 0.197 at 546 nm and a second-harmonic generation (SHG) response of 0.82 times that of KH2PO4 (KDP). Furthermore, the compound exhibits high thermal stability (> 600 °C), maintains chemical stability in both water and concentrated sulfuric acid, and possesses an ultraviolet (UV) cutoff edge at 305 nm. Theoretical analyses confirm that the synergy between the [NbO6] octahedra and [TeO3] pyramids is the key mechanism for the enhanced SHG response and birefringence. This work demonstrates the potential of Nb2O2(TeO3)2(SO4) as an UV-NLO material and validates the effectiveness of the multi-component synergistic strategy in designing advanced NLO crystals.
✓ 已验证
产品关联
DOI
高影响因子
CRYSTENGCOMM
·
2022
·Vol. 24
·期 14
·2542-2550
·
IF 3.756
Ming-Yang Cao,Chun-Li Hu,Peng-Fei Chen,Qian Wang,Bing-Xuan Li,Yuan Lin,Jiang-Gao Mao
Three nonlinear optical materials Cd4REO(BO3)3 (RE = Sm, Eu, Tb) have been synthesized through high-temperature solid-state reactions. In their crystal structures, Cd(1)O8 and Cd(2)O6 polyhedra are interconnected via sharing edges and corners into a 3D anion framework with two types of tunnels based on 4- and 7-membered rings; the BO3 groups are grafted into the above-mentioned types, creating new tunnels based on Cd4B3 seven-membered rings, which are filled by RE3+ cations. Powder SHG measurements revealed that the Cd4REO(BO3)3 (RE = Sm, Eu, Tb) samples display SHG signals that are approximately 1.2, 5.6 and 1.5 times that of the KDP sample. In addition, Cd4EuO(BO3)3 and Cd4TbO(BO3)3 emit red and green light, respectively. The lifetime of the Eu(5D0) state for λex,em = 464, 610 nm in Cd4EuO(BO3)3 is measured to be about 1.43 ms whereas the lifetime of the Tb(5D4) state for λex,em = 376, 543 nm in Cd4TbO(BO3)3 is measured to be about 1.01 ms.
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
·
2021
·
IF 5.165
Zhi-Hui Shi,Mei Yang,Wen-Dong Yao,Wenlong Liu,Sheng-Ping Guo
Two chalcogenophosphates, SnPS2.86Se0.14 (1) and SnPSe3 (2), are isostructural and crystallize in the monoclinic noncentrosymmetric space group Pn. Their three-dimensional (3D) structures are constructed by [Sn(1)Q8] hendecahedra and [Sn(2)Q8] dodecahedra by sharing Q vertices and edges, leaving cavities for isolated [P2Q6] (Q = S/Se, Se) dimers. A second-harmonic-generation (SHG) measurement indicates that 1 is phase-matchable with a response of approximately 1.2 × AgGaS2 (AGS), which is verified by the theoretical calculation result. The powder sample of 1 exhibits a high laser-induced damage threshold of 3.9 × AGS. For comparison, the known SnPS3 (3) was also synthesized and evaluated using the same method. The chemical composition–NLO performance relationship of 1–3 is also discussed. Dipole moment calculation results suggest that [SnQ8] polyhedra make the main contribution to their excellent nonlinear optical (NLO) performance.
研究领域:
材料科学
·
非线性光学
·
晶体学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2021
·Vol. 56
·期 9
·5910-5923
·
IF 4.22
Tian Yanxin,He Yulin,Liu Pan,Zhang Hui,Zheng Qiuying,Liu Jialiang,Xiao Linghan,Wang Xibin,Ao Yuhui,Li Ming
Developing a mild and efficient method to simultaneously enhance poling efficiency and temporal stability is meaningful and challenging for organic second-order nonlinear optical materials. In this paper, a new poly (aryl ether ketone) and chromophores functionalized with anthracene groups have been designed and prepared. Poling and crosslinking process could be separated by the mild and photo-initiated cycloaddition of anthracene group. As the UV–Vis spectrum, DSC and TGA curves, the networks had formed by 30-min irradiation of the Lower-power UV light which led little decomposition of dipolar chromophores. The maximum electro-optic coefficient ( r 33 ) of these polymers is 28.5 pm V −1 (at 1.3 μm), and the order parameter reaches 0.22. Moreover, the depolarization temperature of α peak, related to the dipole relaxation, has been increased to 129 °C after crosslinking, which is 17 °C higher than uncrosslinked ones. All these results indicated that the photo-crosslinking of anthracene exhibited promising potential for improving alignment stability and NLO activity at the same time. Graphical abstract
研究领域:
材料科学
·
光电学
·
聚合物化学
✓ 已验证
DOI
高影响因子
OPTIK
·
2020
·
IF 2.187
Tongpeng Zhao,Shaohua Ji,Degao Zhong,Fei Teng,Shakir Ullah,Siyuan Hu,Jie Tang,Bing Teng
The organic nonlinear optical (NLO) material N, N-dimethyl-4-[2-(2-quinolyl) vinyl] aniline (DADMQ) has been synthesized and high-quality single crystal with the dimension of 8 × 1 × 0.5 mm 3 was grown from methanol solvent by slow cooling method for the first time. Single crystal and powder XRD studies show that DADMQ crystal belongs to the orthorhombic space group Pna2 1 . All the functional groups and structure of the synthetic material can be determined from FT-IR and 1 H NMR spectral analyses. The thermal properties can be studied through TG/DTG and DSC analyses, and its melting point is confirmed at 184.9 ℃. Some critical optical characteristics like the optical transmittance, optical absorption coefficient (α), energy band gap ( E g ), cut-off wavelength (λ max ) and extinction coefficient (κ) can be carried out through UV–vis-NIR spectral analysis. The dielectric features of the title crystal have also been measured. Furthermore, there is a blue emission appeared at 493 nm through PL spectral analysis. The second harmonic generation (SHG) efficiency of the title crystal has been measured, which indicates that DADMQ has 3.64 times greater than KDP crystal.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）