ZEITSCHRIFT FUR KRISTALLOGRAPHIE-NEW CRYSTAL STRUCTURES
·
2024
·
IF 0.3
Yu-Pei Xia,Yu-Xin Huang
C 40 H 48 Cu 2 N 12 O 12 , monoclinic, P 2 1 / n (no. 14), a = 10.9519(1) Å, b = 17.4351(2) Å, c = 24.4288(3) Å, β = 102.143(1)°, V = 4560.25(9) Å 3 , Z = 4, R gt ( F ) = 0.0647, w R ref ( F 2 ) = 0.1904, T = 120 K.
研究领域:
化学
·
材料科学
·
晶体学
✓ 已验证
产品关联
DOI
高影响因子
Polymer Chemistry
·
2013
·Vol. 5
·期 2
·607-613
·
IF 5.231
Longqiang Xiao,Shaojun Cai,Qingye Liu,Liqiong Liao,Xin Guo,Yan Li,Xiangxiang Jia,Feifei Li,Lijian Liu
Polypyrazoles with molecular weights in the range of 6500–9300 g mol−1 and yields in the range of 71.4–82.5% were synthesized successfully by catalyst-free 1,3-dipolar cycloaddition of bisdiazo compounds to bisalkynes under thermal conditions and lost merely 5% of their weights at temperatures higher than 298 °C. The porous polypyrazole–copper complex with pore diameters in the range of 1–2 μm was prepared by the coordination of polypyrazole and copper sulfate (CuSO4), which is a reusable catalyst for the Huisgen 1,3-diploar cycloaddition of alkynes and organic azides to give the corresponding triazoles with yields over 90%.
研究领域:
有机化学
·
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
Chemistry-An Asian Journal
·
2022
·Vol. 17
·期 13
·e202200141
·
IF 4.839
Shuai-Cong Huo,Yao Li,De-Xiang Zhang,Qi Zhou,Ying Yang,Herbert W. Roesky
Graphical A series of digermylenes R(EGeL) 2 (L=CH[C(Me)N(Ar)] 2 , Ar=2,6- i Pr 2 C 6 H 3 ; E=O, R=1,3-C 6 H 4 ( 1 ), 1,4-C 6 H 4 ( 2 ), Me 2 C(CH 2 ) 2 ( 3 ); E=NH, R=1,4-C 6 H 4 ( 4) , 1,4-C 6 H 10 , ( 5 ); E=C(O)O, R=1,3-C 6 H 4 ( 6 )) were synthesized by the nucleophilic addition of diphenols, diol, diamines and dicarboxylic acids, respectively, with L′Ge (L′=HC[C(CH 2 )N(Ar)]C(Me)N(Ar), Ar=2,6- i Pr 2 C 6 H 3 ). Treatment of the obtained digermylene 1,3-C 6 H 4 (OGeL) ( 1 ) with sulfur, selenium, and CuX (X=Cl, Br, I, C 6 F 6 ) is also explored. A series of digermylenes R(EGeL) 2 (L=CH[C(Me)N(Ar)] 2 , Ar=2,6- i Pr 2 C 6 H 3 ; E=O, R=1,3-C 6 H 4 ( 1 ), 1,4-C 6 H 4 ( 2 ), Me 2 C(CH 2 ) 2 ( 3 ); E=NH, R=1,4-C 6 H 4 ( 4) , 1,4-C 6 H 10 ( 5 ); E=C(O)O, R=1,3-C 6 H 4 ( 6 )) were synthesized by the reactions of L′Ge (L′=HC[C(CH 2 )N(Ar)]C(Me)N(Ar), Ar=2,6- i Pr 2 C 6 H 3 ) with selected diphenols, diol, diamines, and o -/ m -phthalic acids, respectively. Treatment of digermylene 1,3-C 6 H 4 (OGeL) 2 ( 1 ) with sulfur, selenium and CuX (X=Cl, Br, I) led to the formation of 1,3-C 6 H 4 [OGe(S)L] 2 ( 8 ), 1,3-C 6 H 4 [OGe(Se)L] 2 ( 9 ), and (CuX) 2 [1,3-C 6 H 4 (OGeL) 2 ] 2 (X=Cl ( 10 ), Br ( 11 ), I ( 12 )), respectively. The obtained products were characterized by melting point, elemental analysis, FT-IR, 1 H and 13 C NMR spectroscopy, and single-crystal X-ray diffraction.
研究领域:
无机化学
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
CRYSTENGCOMM
·
2023
·Vol. 25
·期 40
·5722-5729
·
IF 3.1
Abraham Mensah,Wei-Min Chen,Ennin Vendish Kweku,Peng-Lai Liu,Juan-Juan Shao,Fang-Ming Wang,Li-Zhuang Chen
Five novel ‘all-in-one’ (AIO) structured cuprous iodide coordination materials 1–5 are presented. With the introduction of planar aromatic groups on the ligand, 1,4-diazabicyclo[2.2.2]octane (DABCO), targeted at eliminating stronger π–π interactions through the twisted nature of the latter species, the complexes displayed good stability, solubility, and high quantum yields of emissions ranging from 70.3–95.3%. Further systematic studies were performed on the relationship between their luminescence and modification of the ligands with halogen atoms. This work provides a reasonable idea for designing luminescent cuprous iodide materials with high quantum yields of emission for use in solid-state lighting in the future.
研究领域:
无机化学
·
材料科学
·
光物理
✓ 已验证
DOI
高影响因子
POLYHEDRON
·
2015
·
IF 2.011
Kui Ren,Xuefang Shang,Jiajia Fu,Peipei Zhao,Jinlian Zhang
A Copper(II) complex of condensation production was synthesized and its crystal was also obtained by the reaction of 2-(phenylimino-methyl)-phenol with Cu(CH 3 COO) 2 ·H 2 O. The crystal and molecular structure of the complex was determined by single-crystal X-ray diffraction, IR, and HRMS. The Cu(II) ion was four coordinated with two phenolate oxygen and two imine nitrogen atoms in a square-planar geometry. It should be emphasized that the complex demonstrated high selectivity and sensitivity for hydrogen sulfide over other anions (AcO − , H 2 PO 4 − , F − , Cl − , Br − and I − ) followed by the release of copper ion to give a remarkable increase of fluorescence intensity in various organic-aqueous solutions. The synthesized copper complex could be used as a fluoresencent probe for the detection of HS − in the sample of environment, pharmacy, and etc.
研究领域:
化学
·
生物分析
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2022
·
IF 9.463
Qiyuan Li,Lin Cao,Wei Wang,Xude Qin,Shougang Chen
In this paper, polyurethane (PU) with polyethylene glycol as a soft segment and isophorone diisocyanate as a hard segment were designed and synthesized. Copper complex (Cu(HD) 2 ) was synthesized in PU preparation, bringing excellent self-healing, photothermal and antibacterial properties. The content of Cu 2+ accounted for less than 2wt% of PU elastomer. Cu(HD) 2 acted as a chain extender and provided coordination bonds for elastomer to promote the self-healing process. Experiments showed that Cu(HD) 2 exhibited excellent photothermal properties in PU. The maximum temperature of the samples after 5 min irradiation under a sunlight simulator could reach 120 °C. The results of the self-healing experiment showed that mechanical properties of PU could be recovered by nearly 90%, and electrochemical protection performance could be recovered by nearly 100%. Antibacterial experiments proved that PU could release Cu 2+ , forming an antibacterial ring around PU. PU has excellent application in the field of anticorrosion and antibacterial coatings.
研究领域:
材料科学
·
化学工程
·
生物学
✓ 已验证
产品关联
DOI
高影响因子
MINERALS ENGINEERING
·
2024
·
IF 4.9
Guowei Zhang,Lei Hou,Peng Chen,Qi Zhang,Yu Chen,Nasriddinov Zamoniddin Zainiddinovich,Chunhui Wu,López Valdivieso Alejandro,Feifei Jia
Gold thiosulfate leaching is renowned for its non-toxic and high leaching efficiency. However, in traditional thiosulfate leaching systems, the presence of a high mixed potential and oxidizing metal ions in the solution environment leads to the consumption of thiosulfate through oxidation and causes passivation of the gold surface. Here, we proposed a novel thiosulfate leaching system mainly using non-toxic copper-ethydiaminedhephen acetic (EDDHA) replacing the conventional copper-ammonia. In this system, the gold leaching process mainly catalyzed by the stable Cu-EDDHA complex ion (as oxidizing agent analyzed by UV–vis spectrophotometer). The complexation of Cu(II) attributed to EDDHA reduces the mixed potential in the leaching process. The coordination also prevents the oxidation of thiosulfate by free copper ions. Accordingly, thiosulfate consumption during leaching is minimized, as it mitigates oxidation and self-decomposition. Besides, Raman and XPS spectrum demonstrate that introduce of EDDHA into the thiosulfate system can effectively eliminate the harmful surface passivation of gold, which enhance the gold leaching efficiency. In addition, by fulfilling a set of conditions, a gold extraction of 82.84 % can be attained in new system compared with 56.02 % for conventional cyanide leaching. Further, adding EDDHA to the thiosulfate leach reduced the reagent consumption from 103.19 kg/t to 10.54 kg/t. The results are benefits to the development and utilization of thiosulfate gold leaching.
研究领域:
冶金化学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2022
·
IF 4.171
Shiyu Xiao,Shian Xie,Manbo Zhang,Shengmin Hu,Marc Adape,Jian Wang,Xinhui Zhang,Yongqin Wei,Wei Chen
Here we report two luminescent copper complexes with different structures and luminescent properties, the blue-green [CuI(dmpyHS) (PPh 3 ) 2 ]⸱CH 3 CN (CuPy-PPh 3 ) and the red [Cu 6 (dmpyS) 6 ]⸱H 2 O (CuPy). When the blue-green light (CuPy-PPh 3 ) is heated to above 147 °C, it loses the phosphine-containing ligand, PPh 3 , and turns into CuPy and instead emits red light. Many luminescent complexes show the change of luminescence properties when the temperature is lower than room temperature , while the luminescence change of CuPy-PPh 3 occurs during the heating process above room temperature. Even more interesting, the luminescence wavelength transition span is large, from blue-green light emission at 490 nm to red light at 676 nm. The luminescence of the two copper complexes covers the three primary colors of red, green and blue required for the formation of white light emitting diodes WLEDs, which has potential in the development of non-rare earth phosphor white color displays. The integration of CuPy-PPh 3 and CuPy on a 395 nm near-ultraviolet chip can assemble WLEDs with good white light properties, which provides a new way for the construction of rare earth-free phosphor WLEDs. The synthesis of the two luminescent copper complexes is simple and environmentally friendly. Even though the structures of two copper complexes have been reported, the synthesis methods are different from those in the related literature and the luminescence properties of these complexes have never been described previously. The red emission copper complex CuPy is obtained by the thermal conversion of the blue-green emission copper complex CuPy-PPh 3 , which is a new phenomenon discovered for the first time in this work.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COORDINATION CHEMISTRY
·
2017
·
IF 1.795
Shan-Shan Zhao,Peng Wang,Li-Na Wang,Lin Fu,Xiao-Meng Han,Jie Qin,Shao-Song Qian
The multidentate Schiff-base ligand N′-(1-(pyrazin-2-yl)ethylidene)isonicotinohydrazide (HL) has been prepared. Reaction with zinc, copper, and silver nitrate afford three complexes, [Zn(HL′)2](NO3)2·3H2O (1), {[Cu2(L)2(NO3)(H2O)2]·NO3}n (2) and {[Ag2(L)2]·3H2O}n (3). These complexes have been characterized by elemental analysis, IR spectroscopy, and single-crystal X-ray diffraction. In 1, HL is a neutral tridentate ligand, whereas in 2 and 3, HL is a deprotonated tetradentate ligand. The hydrogen bonding interactions between NO3− and the host framework result in various supramolecular polymeric structures: a 2-D layer for 1 and 3-D network for 2 and 3. The antibacterial activities of these complexes have been investigated and the results indicate that 3 showed good antibacterial activities.
研究领域:
无机化学
·
材料科学
·
药物化学
✓ 已验证
DOI
高影响因子
International Journal of Environmental Science and Technology
·
2017
·Vol. 15
·期 6
·1193-1200
·
IF 1.915
Li H. H.,Yu H.,Sun M. T.,Alamry K. A.,Asiri A. M.,Wang S. H.
Hydrogen sulfide is a flammable and poisonous gas pollutant often emitted to air as a by-product of water supply, chemical, petroleum and coal industries. It can be transferred into sulfur dioxide in the air under some meteorologic conditions. Herein, a novel functional copper complex is reported which can selectively absorb hydrogen sulfide and subsequently release a highly fluorescent molecule. The copper complex is functionalized with a benzoxadiazole moiety as a fluorescence reporter, and the copper center serves as the recognition and binding site for sulfide. The application of the copper complex has been demonstrated for sensitive and selective measurement of hydrogen sulfide on the basis of “turn-on” fluorescence method, and the limit of detection is determined to be 0.1 μM. Other relevant anionic ions such as bisulfite, sulfate and mercapto compounds showed no interference for the detection of sulfide. These results suggest that the compound and method can be potentially applied for on-site measurement and effective removal of sulfide from environment.
研究领域:
环境科学
·
分析化学
✓ 已验证
DOI
高影响因子
JOURNAL OF FLUORESCENCE
·
2016
·Vol. 27
·期 2
·701-714
·
IF 1.601
Gan Qian,Qi Yongyu,Xiong Yahong,Fu Yinlian,Le Xueyi
Two new mononuclear mixed ligand copper(II) complexes [Cu(PBO)(Gly-gly)(H 2 O)]·ClO 4 ·1.5H 2 O ( 1 ) and [Cu(PBO)(Gly- L -leu)(H 2 O)]·ClO 4 ( 2 ) (PBO is 2-(2′-pyridyl)benzoxazole, Gly-gly and Gly- L -leu are Glycyl-glycine anion and Glycyl- L -leucine anion, respectively), have been prepared and characterized by various analytical and spectral techniques. The interactions of the complexes with DNA were investigated using multi-spectroscopic methods (absorption, emission, circular dichroism), viscometry and electrochemical titration as well as molecular docking technique. The results indicated that 1 and 2 are bound to calf thymus DNA (CT-DNA) through an intercalative mode. The thermodynamic analyses revealed that the reactions between the Cu(II) complexes with DNA are spontaneous with negative Gibbs free energy (Δ G ). The positive changes of enthalpy (Δ H ) and entropy (Δ S ) suggested that the binding processes are dominated by hydrophobic interaction accompanying with endothermic. Also, the complexes exhibited efficient oxidative cleavage of pBR322 plasmid DNA in the presence of ascorbic acid, probably induced by •OH as reactive oxygen species. In addition, 1 and 2 displayed excellent antioxidant activities with the IC 50 values of 0.112 and 0.191 μM, respectively, using the mean of nitroblue tetrazolium (NBT) photochemical reduction under a nonenzymatic condition. Moreover, the complexes were screened for their in vitro cytotoxicity against three human carcinoma cell lines (HeLa, PC-3 and A549), in which 2 owns higher cytotoxicity, which was consistent with DNA binding and cleavage ability order of the complexes. This results showed the in vitro biochemical potentials of the Cu(II)-dipeptide complexes with aromatic heterocyclic, viz. effective metallopeptide-nucleases, SOD mimics and non-platinum chemotherapeutic metallopharmaceuticals and their structure-activity relationship, which may contribute to the rational molecular design of new metallopeptide based chemotherapeutic agents.
研究领域:
生物化学
·
药理学
·
分子生物学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2018
·
IF 3.306
Wen Xu,Xiaofeng Dai,Teng Zhang,Tao Wang
Copper complex conductive inks inevitably contains water which is derived from chemicals and humid air. The dual effects of water on the performance of copper complex conductive inks with amines as ligands were investigated for the first time. On one hand, excess water caused the deterioration of copper complexes by interacting with amines to produce high concentration of OH − , yielding basic salt, hydroxide or oxide precipitate, which shortened the shelf life of copper inks. The degree of deterioration was related to the amine’s coordination ability and alkalinity. On the other hand, trace water could accelerate the thermal decomposition of copper complexes, promote the nucleation of copper, and yield smaller particles to form copper films with denser structure and lower resistivity. The blending of 2-ethylhexylamine (EtHex) and 2-amino-2-methyl-1-propanol (AMP) as ligands to copper formate (Cuf) could balance the dual effects of water on copper complex conductive inks. It was found that Cuf-EtHex-AMP (with 95 mol% EtHex in blended ligands) ink showed strong water resistance. The shelf life of the blended complex ink with additional 2 wt% water was still more than 2 months. The additional water enabled the formation of highly conductive copper films at low heating temperature. The resistivity of the copper film from the blended complex ink with additional 2 wt% water stored for 2 months only increased a little compared to that from the newly prepared ink (from 9.70 μΩ·cm to 14.42 μΩ·cm), which could meet the general requirements of printed electronics.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）