CRYSTENGCOMM
·
2013
·Vol. 15
·期 36
·7274-7284
·
IF 3.879
Xiu-Li Wang,Fang-Fang Sui,Hong-Yan Lin,Chuang Xu,Guo-Cheng Liu,Ju-Wen Zhang,Ai-Xiang Tian
Six new transition metal coordination polymers, namely, [Co(1,2-BDC)(L)1.5(H2O)] (1), [Co(1,3-BDC)(L)(H2O)2]·H2O (2) [Co(5-AIP)(L)0.5(H2O)]·2H2O (3), [Cu(1,2-BDC)(L)] (4), [Cu(1,3-BDC)(L)(H2O)]·3H2O (5), and [Cu2(5-AIP)2(L)2(H2O)]·6H2O (6) (L = N,N′-di(3-pyridyl)octanediamide, 1,2-H2BDC = 1,2-benzenedicarboxylic acid, 1,3-H2BDC = 1,3-benzenedicarboxylic acid, 5-H2AIP = 5-aminoisophthalic acid), have been hydrothermally synthesized and structurally characterized by single crystal X-ray diffraction. In compound 1, the adjacent CoII ions are connected by L ligands to form a 1D chain with an alternating arrangement of L ligands and Co2L2 dinuclear loops. The 1,2-BDC anions coordinate with one CoII ion in a bis(monodentate) chelate mode. Complex 2 shows a 2D (44) grid network with the sql topology, which consists of the 1D zigzag [Co–L]n chain and 1D linear [Co-1,3-BDC]n chain. When 5-H2AIP is used in compound 3, an interesting 2D terraced-type layer based on 1D [Co-5-AIP]2n ladder-like chains and μ2-bridging L ligands with 3,4-connected {62.10}{6} topology is formed. Under the similar conditions to compound 1, except that the cobalt(II) salt is replaced by a copper(II) salt, a 2D wave-like network 4 with 2,4-connected {64.8.10}{6} topology is obtained. Compound 5 displays a 3D coordination polymeric architecture based on 1D [Cu-1,3-BDC]n chains and [Cu–L]n chains, which represents an intriguing 3-fold interpenetrating framework with CdSO4-type topology. When 1,3-BDC is replaced by 5-AIP, another 3-fold interpenetrating 3D CdSO4-type coordination framework for compound 6 is obtained, which is constructed from three types of 1D chains: [La–Cu–Lc]n chain, [Lb–Cu–Lb]n chain and [Cu-5-AIP]n chain. The adjacent 1D chains for 1 and 2D layers for compounds 2, 3 and 4 are further extended by hydrogen bonding interactions to 3D supramolecular frameworks. The effect of dicarboxylates and central metals on the structures of the title complexes has been discussed. Furthermore, the electrochemical behaviors and solid state fluorescent properties for compounds 1–6 are investigated.
✓ 已验证
DOI
高影响因子
Nanoscale
·
2013
·Vol. 5
·期 24
·12633-12644
·
IF 6.233
Yun Zeng,Shaojuan Zhang,Menghui Jia,Yang Liu,Jin Shang,Youmin Guo,Jianhua Xu,Daocheng Wu
A new hypoxia-sensitive coordination compound, bis(2-(2′-benzothienyl)pyridinato-N,C3′)iridium[poly(n-butyl cyanoacrylate)], hereafter denoted as (btp)2Ir(PBCA), is synthesized and characterized by 13C nuclear magnetic resonance (NMR) and Fourier transform infrared spectroscopy (FTIR). (btp)2Ir(PBCA)/chitosan [(btp)2Ir(PBCA)/CS] nanoparticles (NPs) with a core–shell structure are prepared by a two-step fabrication process. The size distributions of these NPs are measured with a Malvern size analyzer, and their morphology is observed by transmission electron microscopy (TEM). The functional groups on the surface are confirmed by FTIR. Phosphorescence spectra are obtained and lifetimes are determined with a spectrophotofluorometer and a time-correlated single photon counting (TCSPC) apparatus, respectively. HeLa and CT26 cell lines are used to examine the cytotoxicity by the MTT assay, as well as to determine the imaging capability of the samples in air and nitrogen atmospheres, respectively. Tumor-bearing mouse models of colon adenocarcinoma are used for tumor imaging in vivo, and the imaging effect is evaluated with a Maestro 2 fluorescence imaging system. Compared with the hypoxia-associated probe bis(2-(2′-benzothienyl)pyridinato-N,C3′)iridium(acetylacetonate) (BTP), the phosphorescence lifetime of (btp)2Ir(PBCA)/CS NPs significantly decreases, but the hypoxia-sensitivity increases after preparation of NPs. Apart from the significantly lower cytotoxicity, (btp)2Ir(PBCA)/CS NPs also enhance the tumor imaging effect by more than 10 times, maintaining the phosphorescence signal in tumor tissue for over 24 h and significantly decreasing the phosphorescence signal in normal tissue in vivo compared with the BTP probe.
✓ 已验证
DOI
PubMed
高影响因子
International Journal of Polymer Science
·
2018
·
IF 1.718
Wenwen Yu,Lijing Zhu,Jiangao Shi,Cunting Zhao
Poly(lactic acid)-block-poly(N,N-dimethylaminoethyl methacrylate) (PLA-PDMAEMA) copolymers were synthesized from aminolyzed PLA via reversible addition fragmentation (RAFT) polymerization. PLA undergoes aminolytic degradation with ethylenediamine (EDA). The kinetics of the aminolysis reaction of PLA at different temperatures and EDA concentrations was investigated in detail. The molar masses of products rapidly decreased in the initial stage at low aminolytic degree. Meanwhile, reactive –NH2 and –OH groups were introduced to the end of shorter PLA chains and used as sites to further immobilize the RAFT agent. PLA-PDMAEMA block copolymers were synthesized. A pseudo-first-order reaction kinetics was observed for the RAFT polymerization of PDMAEMA at a low conversion. By controlling the aminolysis reaction of PLA and RAFT polymerization degree of DMAEMA, the length distributions of the PLA and PDMAEMA blocks can be controlled. This method can be extended to more systems to obtain block copolymers with controllable block structure.
✓ 已验证
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Jiayi Han,Yvfan Zhang,Liping Yang,Xiaojing Yang,Yuming Sun,Xu Zhao,Ran Zhao,Shuyan Zhao,Jingjing Zhan,Lingyan Zhu
N-ethyl perfluorooctane sulfonamidoethanol (N-EtFOSE), a known volatile perfluorooctane sulfonate (PFOS) precursor (PreFOS), has been widely detected in the environment. However, the mechanisms underlying the behaviors and phytotoxicity of N-EtFOSE in plants are unknown. Integrative physio-biochemical and transcriptomic analyses were used to reveal the accumulation, biotransformation, and toxicity of N-EtFOSE in pakchoi ( Brassica chinensis L . ) through root and foliar exposure experiments. Root uptake from exposure medium and efficient translocation to shoot, and foliar uptake from air and inefficient root transfer of N-EtFOSE were observed. N-EtFOSE was biotransformed into various PreFOSs and ultimately into PFOS, with N-ethyl perfluorooctane sulfonamide (N-EtFOSA) identified as the major intermediate. Enzyme assays and gene expression analyses indicated that this biotransformation was mediated by alcohol dehydrogenase, aldehyde dehydrogenase, cytochrome P450, glutathione S-transferase, and ATP-binding cassette transporters. N-EtFOSE led to inhibition of plant growth, photosynthetic rate, and respiration rate, as well as to lipid peroxidation, oxidative damage and subcellular damage. Transcriptomic analysis revealed that differentially expressed genes (DEGs) mainly relative to plant endogenous phytohormones homeostasis, regulation of photosynthesis and respiration, oxidative stress, and xenobiotic metabolism and detoxification. This study highlighted the degradation and stress response mechanisms of N-EtFOSE in plants, providing important information to evaluate the environmental risks of volatile per/polyfluoroalkyl substances (PFASs).
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
·
2015
·Vol. 54
·期 5
·611-620
·
IF 3.113
Zhigang Xue,Zhen Wang,Dan He,Xingping Zhou,Xiaolin Xie
Cationic emulsions of triblock copolymer particles comprising a poly( n -butyl acrylate) (P n BA) central block and polystyrene (PS) outer blocks were synthesized by activator generated by electron transfer (AGET) atom transfer radical polymerization (ATRP). Difunctional ATRP initiator, ethylene bis(2-bromoisobutyrate) (EBBiB), was used as initiator to synthesize the ABA type poly(styrene- b - n -butyl acrylate- b -styrene) (PS-P n BA-PS) triblock copolymer. The effects of ligand and cationic surfactant on polymerizations were also discussed. Gel permeation chromatography (GPC) was used to characterize the molecular weight ( M n ) and molecular weight distribution (MWD) of the resultant triblock copolymers. Particle size and particle size distribution of resulted latexes were characterized by dynamic light scattering (DLS). The resultant latexes showed good colloidal stability with average particle size around 100–300 nm in diameter. Glass transition temperature ( T g ) of copolymers was studied by differential scanning calorimetry (DSC). © 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2016 , 54 , 611–620
✓ 已验证
DOI
高影响因子
Small
·
2022
·Vol. 18
·期 26
·2201996
·
IF 15.153
Tengfei Zhang,Hong Xiao,Xiao Liang,Fanchao Zhang,Huifeng Zhuang,Qiuming Gao,Lirong Zheng
A universal strategy is established for preparing the carbonaceous matrix-based atomically distributed metal catalysts M-BPC (M=Ni, Co, Fe, Cu, and Mn, and biomass-derived porous carbon (BPC)) by one-step pyrolysis of mixed metal salts and biomass alfalfa. The optimized Ni-BPC has dual-atom Ni(II) 2 N 4 (µ 2 -N) 2 moieties, which are chemically anchored on the alfalfa-derived developed porous N-doped carbon BPC matrix. An ultrahigh specific surface area of 3133 m 2 g −1 with huge total pore volume of 3.02 cm 3 g −1 is obtained for Ni-BPC. The Ni-BPC could greatly promote the redox kinetics and effectively prevent the shuttle effect of lithium polysulfides in a Li–S battery. The Li–S battery assembled with the Ni-BPC modified separator exhibits prominent rate performance with the reversible specific capacities of 1279, 1119, 1037, 948 and 787 mAh g −1 at the current densities of 0.1, 0.2, 0.5, 1 and 2 C, respectively. The battery presents an ultra-long life with low capacity decay of 0.028% per cycle up to 2100 cycles at 1 C. Even under high areal S loadings of 3.9 mg cm −2 , the high discharge capacity of 976.6 mAh g −1 is obtained at 0.2 C and excellent cycling stability with 61.1% capacity retention is achieved after 490 cycles.
✓ 已验证
DOI
高影响因子
HYDROMETALLURGY
·
2024
·
IF 4.8
Chunhua Wang,Runhan Yan,Hongmin Cui,Jinsong Shi,Nanfu Yan,Shengyong You
The separation of yttrium (Y) from heavy rare-earth elements (HREEs) is a major issue for ion-adsorbed rare-earth deposits. This study describes a new extraction system to develop efficient separation of Y from HREEs in a chloride medium using diglycolamic acid as the extractant. The extraction performance of N , N -di(2-ethylhexyl)-diglycolamic acid (HDEHDGA) for mixed REEs of an ion-adsorbed rare-earth deposit was investigated. The extraction order of the REEs in the HDEHDGA system followed a positive sequence, and the extraction behavior of Y resembled that of the middle REEs. Compared with naphthenic acid (NA) and sec-octylphenoxy acetic acid (CA12), HDEHDGA exhibited better separation performance for HREEs (Ho-Lu) and Y. The separation factors of Ho/Y, Er/Y, Tm/Y, Yb/Y, and Lu/Y in the Y-enriched solution were 4.41, 4.29, 3.77, 3.26, and 3.11, respectively. Combined slope analysis and electrospray ionization–high-resolution mass spectroscopy (ESI-HRMS) results identified cation exchange as the extraction mechanism of RE 3+ . Furthermore, the molecular dynamics simulation results provided new insights into the dynamic behaviors of Y 3+ and Yb 3+ extraction and revealed that the interaction of HDEHDGA with Yb 3+ was stronger than that with Y 3+ . In addition, the loading capacity and recyclability of HDEHDGA were evaluated. This study highlights the potential of the HDEHDGA system for the separation of Y from HREEs.
✓ 已验证
DOI
高影响因子
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
·
2015
·Vol. 641
·期 5
·911-916
·
IF 1.16
Fugang Li,Wenyuan Zhao,Sitong Chen,Tonglai Zhang,Zunning Zhou,Li Yang
Two nitrogen-rich alkali metal salts based on nitrogen-rich anion [Zn(bta) 2 ] 2– : {[Na 2 Zn(bta) 2 (H 2 O) 8 ] · H 2 O} n ( 1 ) and {[K 2 Zn(bta) 2 (H 2 O) 4 ]} n ( 2 ) were synthesized by reactions of alkali hydroxide, N , N -bis(1 H -tetrazol-5-yl)amine (H 2 bta), and zinc chloride in aqueous solutions. The crystal structures of 1 and 2 were determined by low temperature single-crystal X-ray diffraction and fully characterized by elemental analysis and FT-IR spectroscopy. The structures demonstrate that an infinite 1-dimensional (1D) chain structure is constructed by Na + ions and bridging water molecules in compound 1 , which is connected by extensive hydrogen bonds forming a complex 3D network, whereas compound 2 features a more complicated 3D metal-organic framework (MOF). The thermal behaviors of 1 and 2 were investigated by differential scanning calorimetry (DSC) measurements. The DSC results illustrate that both compounds exhibit high thermal stabilities (decomposition temperature > 345 °C). In addition, the heats of formation were calculated on the basis of the experimental constant-volume energies of combustion measured by using bomb calorimetry. Lastly, the sensitivities towards impact and friction were assessed according to Bundesamt für Materialforschung (BAM) standard methods.
✓ 已验证
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2019
·
IF 4.561
Pan Zhang,Lemeng Wang,Chunjie Lu,Mengying Li,Shujun Yu,Dong Fu
The surface tensions of 2‑diethylaminoethanol (DEAE)‑ N ‑(2‑aminoethyl)ethanolamine (AEEA), DEAE‑ N ‑methyl‑1,3‑propane‑diamine (MAPA) and DEAE‑1,4‑butanediamine (BDA) aqueous solutions have been measured by using the BZY-1 surface tension meter. The mass fractions of DEAE and AEEA/MAPA/BDA respectively ranged from 0.300 to 0.500 and 0.050 to 0.150. The temperature ranged from 303.2 K to 323.2 K. A thermodynamic equation was proposed to model the surface tension and the calculated results agreed well with the experiments. The effects of temperature and mass fraction of amines on the surface tension were demonstrated on the basis of experiments and calculations. The surface thermodynamics including surface enthalpy and surface entropy of blended amine aqueous solutions were also determined, and their temperature and mass fraction dependences were analyzed.
研究领域:
物理化学
·
溶液化学
·
热力学
·
表面科学
·
化工材料
✓ 已验证
DOI
高影响因子
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
·
2026
·
IF 6.6
Haitao Zhang,Chaofeng Chen,Dayu Wang,Yiwei Huang,Yang Liu,Zhiyuan Wang,Furui Fu,Hongyu Wang,Senjie Shi,Yijin Li,Jianchun Zeng,Caiping Shen,Chudan Zhong,Xiaozhou Liu,Jinlun Chen,Jie Li,Shufen Liu,Jin Huang,Yirong Zeng,Wenjun Feng
As an emerging environmental contaminant, N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylenediamine-quinone (6PPD-Q) poses a potential threat to public health. However, the potential link between 6PPD-Q exposure and bone health remains largely unexplored. This study aims to systematically investigate the toxic effects of 6PPD-Q on bone metabolism and elucidate the underlying mechanisms by integrating transcriptomic sequencing, network toxicology, single-cell RNA, Molecular docking, molecular dynamics with both in vivo and in vitro experiments. Integrative analysis converged on mitophagy as a central mechanism in 6PPD-Q-induced osteoporosis, with single-cell sequencing identifying bone marrow-derived mesenchymal stem cells (BMSCs) as the key cell type and revealing CX43, MMP2, PDGFRB, and FYN as the principal targets. Molecular docking and MD simulations confirmed the targeted binding of 6PPD-Q to CX43. RNA-seq analysis of rat tibiae validated the differential expression of CX43 and the critical role of mitophagy. Both in vivo and in vitro experiments demonstrated that 6PPD-Q-induced bone loss was associated with the downregulation of CX43 and concomitant mitophagy dysregulation. In conclusion, this study elucidates that 6PPD-Q induces bone loss was associated with the downregulation of CX43 and concomitant mitophagy dysregulation. Our work establishes a comprehensive mechanistic framework for 6PPD-Q-induced bone damage and offers novel insights for future research into its bone toxicity. The 1 or 10 mg/kg dose used in this study, although higher than the typical environmental exposure level, is consistent with the effects observed in cadmium exposure and is close to the 8 mg/kg dose used in studies on mouse bone toxicity. Additionally, the 5 ng/mL concentration of 6PPD-Q used in the in vitro experiments is comparable to the concentration detected in freshwater, indicating its environmental relevance.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2022
·
IF 8.91
Jianzheng Zhen,Shisong Nie,Jiahao Sun,Shiyuan Pan,Jinhui Wang,Jian Sun,Weiyang Lv,Yuyuan Yao
Developing highly efficient and stable catalysts for peroxymonosulfate (PMS) based advanced oxidation processes (AOPs) are crucial in the field of environmental remediation. In this work, a facile encapsulated-precursor pyrolysis strategy was reported to prepare a competent PMS-activation catalyst, in which uniformly distributed Fe 3 O 4 nanoparticles were firmly anchored on porous boron nitride (BN) nanosheets by N-doped carbon shell (NC layer). Taking advantage of strong metal-support interaction, the as-synthesized catalyst (BFA-500) could efficiently activate PMS to achieve 100% removal of 4-chlorophenol (4-CP) in 6 min, and the corresponding turnover frequency (TOF) value was 1–2 orders of magnitude higher than that of the benchmark homogeneous (Fe 2+ ) and nanoparticle (Fe 0 and Fe 3 O 4 ) catalysts. Moreover, the well protected encapsulated structure of BFA-500 ensured the remarkable stability that could effectively resist the interference of complex water environment, including initial pH value, various inorganic ions and actual water, and its catalytic activity remained almost unchanged in 5 use-regeneration cycles. More importantly, the generation of O 2 •- and 1 O 2 radicals for the 4-CP removal in BFA-500/PMS system was ascribed to Fe 3 O 4 boosted C–N sites containing pyridinic N, where electrons transferred from the embedded Fe 3 O 4 nanoparticles to C–N sites to secure the PMS dissociation into reactive radicals. Overall, this work provided a promising way to design desired PMS-activation catalyst toward wastewater purification.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2020
·
IF 4.939
Ting Pan,Baohua Yue,Liuming Yan,Guangbo Zeng,Yidong Hu,Shufa He,Wei Lu,Hongbin Zhao,Jiujun Zhang
Novel functionalized polysulfone with high local density of sulfonic acid groups, N , N -bis(sulfopropyl)aminyl-4-phenyl polysulfone or O , O′ -bis(sulfopropyl)resorcinol-5-yl-4-phenyl polysulfone (PSF-X-C 3 H 6 SO 3 H, X = N or O) are synthesized. These polymers are synthesized by bromination of polysulfone followed by Suzuki cross-coupling reaction to graft the aminophenyl groups and the dimethoxyphenyl groups onto the polymeric backbone, followed by introduction of the sulfopropyl groups via sultone ring-opening reaction. In addition, the composite membrane of PSF-O-C 3 H 6 SO 3 H and PSF-N-C 3 H 6 SO 3 H is also synthesized for comparison. The maximum proton conductivity of composite PSF-O-C 3 H 6 SO 3 H and PSF-N-C 3 H 6 SO 3 H reaches 46.66 mS cm −1 at 95 °C and 90% RH, higher than PSF-O-C 3 H 6 SO 3 H (42.06 mS cm −1 ) and PSF-N-C 3 H 6 SO 3 H (38.76 mS cm −1 ). Meanwhile, the composite exhibits compromised water uptake and swelling ratio, and low methanol permeability . The excellent overall performance of the composite is attributed to phase-separation between the hydrophilic and the hydrophobic subphases, and the hydrogen-bonding network developed in the hydrophilic subphases.
✓ 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）