JOURNAL OF SOLID STATE CHEMISTRY
·
2022
·
IF 3.656
Gang-Xiang Liu,Yu-Long Wei,Li-Nan Zhang,Wenlong Liu,Sheng-Ping Guo,Ru-Ling Tang
Phosphites have attracted extensive attention for their abundant open-frameworks and special performances. Here, three inorganic indium phosphites, namely In 2 (HPO 3 ) 3 (H 2 O) (1), In 2 (HPO 3 ) 3 (H 2 O) 3 ·(H 2 O) (2) and NH 4 [In(HPO 3 ) 2 ] (3), have been obtained via facile hydrothermal reactions . 1 and 2 crystallize in the same polar space group P 2 1 , and 3 crystalizes in the polar space group of P 63 mc . Isolated HPO 3 tetrahedra connect to twisted InO 6 octahedra via corner-sharing forming neutral 3D {In 2 (HPO 3 ) 3 (H 2 O)} ∞ and {In 2 (HPO 3 ) 3 (H 2 O) 3 } ∞ as well as 2D [In(HPO 3 ) 2 ]- ∞ frameworks for 1 – 3 , respectively. Second harmonic generation (SHG) effect measurements have shown that their phase-matched SHG signals are 0.17, 0.20 and 0.28 times of KDP. Thermal stability analyses, optical property measurements and theoretical studies of them were also performed.
研究领域:
材料科学
·
晶体学
·
光学
✓ 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
INORGANIC CHEMISTRY
·
2021
·
IF 5.165
Qirui Shui,Ruibiao Fu,Hongxin Tang,Yuanbin Fang,Zuju Ma,Xintao Wu
The substitution of alkali metal cation or halogen anion based on nonlinear crystals is an effective strategy to exploit new optical materials. The strategy has been successfully expanded to discover two new lead halides, Rb3Pb2(CH3COO)2X5 (X = Br, Cl). The substitution of the Cs+ cation with a Rb+ cation can not only increase the local dipole moment of the distorted [PbBr4O2] polyhedron but also reduce the cell unit, resulting in a large net macroscopic polarization. Therefore, Rb3Pb2(CH3COO)2Br5 possesses a strong second-harmonic generation (SHG) response (6 × KDP) and a large birefringence (0.18@1064 nm). Furthermore, by the substitution of the Br– anion with a Cl– anion, Rb3Pb2(CH3COO)2Cl5 exhibits a high laser damage threshold (LDT, 84 × AgGaS2) and a short UV cutoff edge of 287 nm, as well as moderate SHG response (3 × KDP) and birefringence (0.11@1064 nm). Detailed theory calculations elucidate the origin of the linear and nonlinear optical properties of these compounds.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Today Physics
·
2023
·
IF 11.5
Mengran Sun,Chunxiao Li,Jinlong Shi,Ming-Hsien Lee,Jiyong Yao
As promising candidate for mid- and far- infrared (MFIR) nonlinear optical (NLO) materials, diamond-like (DL) chalcogenides have been extensively studied because of their considerable advantages. Among them, tellurides attract our attention as their stronger electron polarization and wider transmittance range than those of sulfides and selenides . Herein, the insightful structural characteristics and NLO properties of defect DL MGa 2 Te 4 (M = Zn, Cd) were studied for the first time at experimental and theoretical level. They crystallize in the non-centrosymmetric I -4 space group (No.82), with a three-dimensional structure consisting of highly oriented [MTe 4 ] and [GaTe 4 ] tetrahedra, which can be viewed as derived from AgGaS 2 (AGS). Experimental results illustrate that MGa 2 Te 4 (M = Zn, Cd) exhibits moderate band gaps, strong SHG intensities about 4.9–10.6 times that of AGSe at 90–125 μm, and congruent-melting behavior. Theoretical calculations based on E-field DFPT method indicate that the tremendous SHG tensors d 14 of ZnGa 2 Te 4 and CdGa 2 Te 4 are 127.67 and 105.19 pm/V. SHG-density analysis reveals that the lone-pair packets of Te ions in [GaTe 4 ] units are the main source of SHG responses. In addition, calculations on Mulliken bond order index imply that the main difference between these two crystals is the bonding modes of M−Te. Special care was also given to ensure convergence of k -mesh for both conventional and primitive cells of the crystals, with two different methods for calculating linear and non-linear optical properties compared side by side. This work demonstrates the potential applications of these two defect DL tellurides in the MFIR NLO field .
研究领域:
材料科学
·
光学
·
非线性光学
·
红外材料
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Jianhui Li,Bifei Li,Yi Hou,Johar Zeb,Qunhui Yuan,Wei Gan
It is not easy to in-situ probe the structural evolution in assembly systems in solutions. Determining the activation energy of the molecular processes in vesicle formation, which is important in revealing the mechanism in the transformation of vesicles, is also challenging. In this work, with the combined second harmonic generation (SHG) and two-photon fluorescence (TPF) techniques, we determined that the activation energies of the aggregation of micelles , the evolution of aggregated micelles to vesicles and the penetration of an anticancer drug (doxorubicin, DOX) on the surface of vesicles composed of DOX and a surfactant bis (2-ethylhexyl) sodium sulfosuccinate (AOT) were 48.6 kJ/mol, 49.4 kJ/mol and 20.5 kJ/mol, respectively. In addition, we investigated the effect of different types of salts on the self-assembly behavior of DOX and AOT molecules. It was observed that compared with Na + , Ca 2+ significantly reduced the activation energy in the transformation of aggregated micelles to vesicles at a much lower concentration, which indicated a strong association ability between Ca 2+ and AOT head group.
研究领域:
生物物理学
·
药物化学
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY
·
2018
·
IF 4.7
Ting-Ting Ruan,Chun-Li Hu,Jiang-He Feng,Fei-Fei Mao,Jiang-Gao Mao
Three new cadmium(II) tartratoborates, namely, Cd5[(C4H2O6)2B]2(H2O)8·3H2O (1), K2Cd4[(C4H2O6)2B]2(H2O)2 (2), and Li0.92K1.08Cd1.5[(C4H2O6)2B](H2O)2 (3), have been successfully synthesized by the hydrothermal method. Compounds 1–3 belong to centric C2/c, acentric Pc, and the polar C2, respectively. Through based on the same hybrid borate–tartrate [(C4H2O6)2B]5– anions, they exhibit different structures. The [(C4H2O6)2B]5– anion is composed of two tartrate anions and a B(OH)4– unit. Compound 1 features a novel 3D network formed by 2D {Cd3[(C4H2O6)2B]2(H2O)2}4– anionic layers and [Cd2O10] dimers, forming tunnels of large 14-MRs which are filled by the non-coordination water molecules. Compound 2 has a characteristic 3D network based on {Cd2[(C4H2O6)2B]}− units interlinked via carboxylate groups, forming tunnels of 11-MRs, half of which stuffed with the K+ ions. Compound 3 features 2D {Cd4[(C4H2O6)4B]}3+ layers which are separated by K/Li ions. Luminescent studies suggest that they emit blue light. Compounds 2 and 3 display phase-matchable second harmonic generation signs of about 3.2× and 1.5× KH2PO4, respectively.
研究领域:
无机化学
·
材料科学
·
非线性光学
·
晶体工程
·
发光材料
✓ 已验证
DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2022
·
IF 10.508
Mei-Huan Zhao,Xiao Zhou,Yifeng Han,Dequan Jiang,Yonggang Wang,Kuo Li,Haiyan Zheng,Huiyang Gou,Ling Chen,Man-Rong Li
Intercepting metastable phases by chemical approaches is an important solution to explore structural varieties of functional materials under positive/negative pressure, as paradigmatically exemplified by the polymorph modification in Li2TiTeO6. Here, we stabilized a novel metastable Li2TiTeO6 (denoted as γ-phase) in the ordered-ilmenite-type R3 via facile topotactic reaction from Na2TiTeO6, which was found to crystallize in R3 instead of the reported R3̅ structure. The calculated equilibrium volume of γ-Li2TiTeO6 is larger than that of the ground-state Pnn2-Li2TiTeO6 (denoted as α-phase), indicating that γ-Li2TiTeO6 can only be stabilized under “negative pressure” quantified to be around −6 GPa. The γ-phase irreversibly transforms into the α-phase around 560 °C under ambient pressure, accompanied by a steep increase (∼500 times) of the second harmonic generation (SHG), indicating a potential application of γ-Li2TiTeO6 as an optical thermometer. These findings elegantly show that chemical pressure as well as physical pressure is powerful to tune the polymorphs for metastable phases and exotic properties as paradigmatically exemplified by Li2TiTeO6, which undergoes consecutive polymorph tuning of γ (−6 GPa), α (0 GPa), β (6 GPa, R3-Ni3TeO6 type), and δ (40 GPa, predicted P21/n double perovskite) phases with densified atomic packing.
研究领域:
材料科学
·
光学
·
固体化学
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY
·
2020
·
IF 4.825
Yun-Xiang Ma,Ya-Ping Gong,Chun-Li Hu,Fang Kong,Jiang-Gao Mao
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, Pb) are centrosymmetric (P1̅, no. 2). The structures represent a complicated three-dimensional skeleton containing two different types of Ga4Se4 8-member polyhedral ring tunnels with the counter cations located at the broad ones. When the divalent counter cations were substituted by a trivalent lone pair cation of Bi(III), a novel noncentrosymmetric compound of BiGa(SeO3)3 was achieved. BiGa(SeO3)3 displays a 3D gallium selenite framework with 1D bismuth oxide chains filling in the 12-member polyhedral ring tunnels. Frequency doubling measurements showed that BiGa(SeO3)3 presented an apparent SHG signal comparable to the commercial KDP and can realize phase matching. The lone pair anionic groups of SeO32– made the major contribution according to the SHG density analyses. BiGa(SeO3)3 exhibits a wide transparent range and large optical bandgap (3.90 eV). The laser-induced damage threshold of BiGa(SeO3)3 was estimated to be 98.68 MW/cm2, about 44 × AGS.
研究领域:
材料科学
·
光学
·
晶体学
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY
·
2015
·
IF 4.762
Hui Yang,Chun-Li Hu,Xiang Xu,Jiang-Gao Mao
The first examples of lanthanide borate–acetate mixed anion compounds, namely, Ln2(CH3CO2)2[B5O9(OH)]·H2O (Ln = La 1; Ce 2; Pr 3), were synthesized under hydrothermal conditions. These compounds are isostructural and crystallize in polar space group Cc. They display a unique three-dimensional (3D) framework built by a 3D network of lanthanide borate further decorated by acetate anions. The borate anion exhibits a 2D layer in the ac plane with large 9-member rings (MRs) which are filled by lanthanide(III) ions into a {Ln[B5O9(OH)]}− 2D layer. Adjacent {Ln[B5O9(OH)]}− layers are bridged by remaining lanthanide (III) ions to form a 3D network of lanthanide borate. It is noteworthy that Ln2(CH3CO2)2[B5O9(OH)]·H2O (Ln = La 1; Ce 2; Pr 3) can be changed into Ln2(CH3CO2)2[B5O9(OH)] (Ln = La 4; Ce 5; Pr 6) under heating at 500 K. Compounds 1–4 display moderate SHG signals of about 2.0, 1.0, 1.4, and 2.5 times that of KH2PO4, respectively, and they are phase matchable. Their SHG responses mainly arise from the synergistic polarization effects of both asymmetric borate clusters and π-conjugated CH3COO– anions.
研究领域:
材料科学
·
晶体学
✓ 已验证
DOI
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2022
·Vol. 28
·期 53
·e202201588
·
IF 5.02
Ru-Ling Tang,Xin Lian,Xiao-Hui Li,Lei Huai,Wenlong Liu,Sheng-Ping Guo
Graphical Two new mixed-alkali metal tantalum fluorides CsATaF 7 (A=K, Na) were synthesized by hydrothermal reactions based on the parent compounds A 2 MF 7 (A=monovalent cations and M-d 0 transition-metal cation). Interesting structure transformation for β-K 2 TaF 7 , CsKTaF 7 , and CsNaTaF 7 are induced via alkali metal cation regulations. Among them, CsNaTaF 7 crystallizes in polar structure and own moderate SHG effect. Inorganic metal halides play important roles in wide range of areas including fluorescence, X-ray detection, and nonlinear-optics. Herein, two new mixed alkali metal tantalum fluorides, CsKTaF 7 and CsNaTaF 7 , have been obtained based on the strategy of cations regulation in A 2 MF 7 (A represents monovalent cations and M is d 0 transition-metal cation) system by a conventional hydrothermal route. CsKTaF 7 crystallizes in the centric Pnma space group, while CsNaTaF 7 crystallizes in the polar Cmc 2 1 space group and exhibits moderate and phase-matchable NLO activity. Both halides possess large optical band gaps above 5.0 eV. The crystal structure evolution, optical properties, and detailed theory calculations of these two halides were elucidated in this work.
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
INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Guanlei Gao,Si-Yu Xu,Xinghui Qi,Jie-Ru Yang,Peiqi Lin,Jin Chen,Xiao-Ying Huang,Ke-Zhao Du
The strategy of organic ligand exchange is proposed to tune the optical properties of organic–inorganic hybrid cuprous halides. In this work, the chiral ligand (S)-(−)-2,2′-bis(di-p-tolylphosphino)-1,1′-binaphthyl ((S)-Tol-BINAP) and achiral triphenylphosphine (PPh3) are introduced into cuprous halides CuX-PPh3-[(S)-Tol-BINAP] (X = Cl, Br, I) through organic ligand exchange. As a result, the mixed organic ligands can enhance second harmonic generation (SHG) and aggregation-induced emission (AIE) optical properties. Moreover, the title compounds exhibit progressively enlarged SHG effects along with heavier halogen substitution due to their stronger polarizability. In the meantime, the reduced π–π stacking interaction of the organic ligand will improve their photoluminescence quantum yield. The experimental results combined with the theoretical calculation clarify the structure–property relationship well. Furthermore, the title compounds have been developed for the application of latent fingerprint detection.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Run Ye,Bin-Wen Liu,Xiao-Ming Jiang,Jian Lu,Hui-Yi Zeng,Guo-Cong Guo
Exploration of a new nonlinear optical (NLO)-active functional motif is important in the rational design of promising infrared (IR) NLO materials. Compared with typical tetrahedral MQ4 (M = IIB, III, IV metals; Q = S, Se) motifs, MQ3 (M = As, Sb) pyramids favor high second-harmonic generation (SHG) efficiency while frequently hindering phase matching (PM) because of excessively large optical anisotropy. The surfactant–thermal method was first adopted to achieve PM in MQ3-containing systems and synthesize mixed covalent–ionic IR NLO materials. Two new thioarsenates of AMnAs3S6 (A = Cs, Rb) exhibiting strong PM SHG efficiencies comparable to commercial AGS and laser-induced damage thresholds of one order higher than AGS were obtained. The [As3S6]3– unit in their structures is an unprecedented NLO-active functional motif, which can be useful in designing new IR NLO compounds with large SHG efficiency. In addition, the surfactant–thermal method provides a new general strategy for synthesizing new IR NLO materials.
研究领域:
材料科学
·
化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）