COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2022
·
IF 5.518
Jinke Wang,Yao Huang,Lingwei Ma,Xin Guo,Shanghao Wu,Chenhao Ren,Dawei Zhang
In this work, a smart coating with corrosion-sensing and self-healing dual functions was developed on carbon steel by incorporating the urea formaldehyde (UF) microcapsules loaded with 1,10-phenanthroline (Phen) molecules. Phen as both the corrosion-sensing indicator and corrosion inhibitor was encapsulated into the UF microcapsules via the oil-water (O/W) emulsion in-situ polymerization method. When the coating was damaged, the Phen molecules released from UF/Phen microcapsules would react with the Fe 2+ ions generated from the active anodic corrosion site of the carbon steel substrate, and displayed a prominent red color chelate compound for corrosion-sensing application. During the neutral salt spray test, the corrosion evolution underneath the damaged coating can be rapidly detected within 15 min. Besides, the corrosion activity near the coating scratch can be effectively inhibited due to the adsorption of released Phen on the exposed substrate surface. After 72 h of immersion in 3.5 wt% NaCl solution, the low frequency impedance modulus of the scratched coating containing 10 wt% UF/Phen microcapsules was almost 7 times that of the scratched blank coating. The smart coating can not only achieve timely corrosion sensing, but also suppress the corrosion activity, which is of great importance for practical corrosion protection applications.
研究领域:
材料科学
·
腐蚀与防护
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DOI
高影响因子
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2020
·Vol. 36
·期 5
·934-939
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IF 1.063
Li Ruyue,Wu Mingwei,Pan Biwei,Li Meng,Huang Jun
A 1,10-phenanthroline based polymer named PPPhen( i.e. , polymer from pyrene 1,10-phenanthrolin) was prepared by the Friedel-Crafts reaction of 1,10-phenanthroline and pyrene cross-linked with dimethoxymethane. The related Pd catalyst Pd@PPPhen was prepared by supporting Pd nanoparticles(NPs) on the PPPhen material. PPPhen and Pd@PPPhen were characterized by means of scanning electron microscopy(SEM), transmission electron microscopy, N 2 adsorption-desorption, Fourier-transform infrared and X-ray photoelectron spectroscopy analyses. The results showed that PPPhen polymer was highly porous and that the phenanthroline group can enhance the stability of the Pd nanoparticles. Pd@PPPhen also exhibited good catalytic activity in the aerobic oxidation of alcohols to aldehydes and ketones, and Pd@PPPhen was recyclable with durable activity and retentive structures.
研究领域:
化学
·
催化材料
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DOI
高影响因子
ANALYST
·
2012
·Vol. 138
·期 3
·887-893
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IF 4.23
Lu Zhang,Kao Zhu,Tao Ding,Xianyun Hu,Qingjiang Sun,Chunxiang Xu
We have developed a new fluorescent probe based on direct conjugation between 1,10-phenanthroline (Phen) and water-soluble thioglycolic acid (TGA) capped CdTe quantum dots (QDs) for the detection of double-stranded DNA (dsDNA). Phen could directly adsorb onto the QDs surface by metal-affinity driven coordination, quenching the photoluminescence (PL) of QDs via the photoinduced hole transfer process; addition of dsDNA would bring the restoration of QDs PL, as Phen could intercalate into dsDNA followed by its dissociation from the QDs surface. The dependence of QDs PL on the dsDNA amount as well as temperature was utilized to investigate the Phen–dsDNA interaction. The obtained binding constant of the QD–Phen dyad was 2–3 orders of magnitude higher than that of Phen-based metal complexes. Both the binding constant and the binding site of dsDNA with Phen increased with the elevated temperature, owing to an endothermic process. At 37 °C, sensitive detection of dsDNA with a detection limit of ∼3 nmol L−1 was achieved. Therefore, the QD-molecule direct conjugation based fluorescent probe could provide an effective alternative to those based on QD-bioconjugation and QD-ionic conjugation.
研究领域:
生物化学
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分子生物学
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纳米生物学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF COORDINATION CHEMISTRY
·
2014
·
IF 2.212
Xiao-Li Tang,Ai-Qing Ma,Guo-Qiang Cai,Long-Guan Zhu
Three complexes with same components, PdII, 2-sulfobenzoate and 1,10-phenanthroline, [Pd(phen)2]⋅2(2-Hsb) (1), [Pd(phen)2](2-Hsb)⋅(2-Hsb)⋅2H2O (2), and [Pd(phen)2]⋅[Pd(phen)(2-sb)2]⋅6H2O (3), where 2-H2sb is 2-sulfobenzoic acid and phen is 1,10-phenanthroline, were synthesized and characterized by IR spectra, elemental analyses, thermogravimetric analyses, UV–vis absorption spectra and powder X-ray analysis. Single X-ray crystal structural analyses showed that 1 and 2 are ionic species, while 3 is a dimer through weak bonding interactions. In 1 and 2, 2-Hsb− ligands are partly deprotonated and it is fully deprotonated in 3. In 2 and 3 there are hydrogen bonds and π–π interactions. Extended hydrogen bonding structures for 2 and 3 are 1-D and 3-D architectures, respectively. The oxidation of methyl phenyl sulfide by 1-3 as homogeneous catalysts gave high conversion and selectivity in methanol. The addition of 2-sulfobenzoic acid in the catalytic reaction further promotes the conversion.
研究领域:
化学
·
材料科学
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DOI
高影响因子
AICHE JOURNAL
·
2025
·
IF 4
Xiao Geng,Jianfeng Zhang,Benzheng Xia,Yuqiu Guan,Qiyu Meng,Zhuojun Jiang,Yifan Zhang,Bharat Prasad Sharma,Yufeng Liang,Liangrong Yang,Zheng Li
Lithium is becoming increasingly important due to its indispensable role in lithium-ion batteries. The direct extraction of lithium from salt lakes, which are a main source of lithium, is challenging due to the coexistence of many interfering alkali and alkaline earth metals. In this work, we report that a synergistic solvent extraction (SSX) system containing 2,9-dialkyl-1,10-phenanthroline and a hydrophobic anion ([NTf 2 ] − ) could extract lithium selectively with a high lithium loading capacity from solutions containing both alkali (sodium, potassium) and alkaline earth metals (magnesium, calcium), enabling the direct recovery of lithium from complex salt lakes. The outstanding lithium extraction performance of the SSX system is unprecedented, to the best knowledge of the authors. Through various characterizations and X-ray diffraction of the complex crystals, the extraction mechanism has been revealed. This SSX system will potentially promote more efficient recovery of lithium from salt lakes.
研究领域:
化学工程
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材料科学
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产品关联
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 70
·66215-66223
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IF 3.289
Fa-Shuo Shan,Jia-Ping Lai,Hui Sun,Ping Zhang,Chong Luo,Yan-Hui He,Huan-Ran Feng
A fast responsive and highly selective mercury(II) sensor was developed using the fluorescence quenching mechanism of 2,9-dimethyl-1,10-phenanthroline (2,9-DMP) towards mercury(II). Furthermore, two kinds of metal–organic frameworks (MOFs) of 2,9-DMP–Hg(II) have been synthesized and characterized by X-ray diffraction. The probe 2,9-DMP exhibited a fast and highly selective response to mercury(II) ions in aqueous solution, showing a good linear relationship over the concentration range of 0.050–2.0 μM for Hg(II) with R2 = 0.9994. The established procedure was used to monitor the concentration of mercury(II) in drinking water and Zhujiang River water samples with satisfactory recoveries of 85.42–101.5% and 81.72–96.09%, respectively. Furthermore, the fluorescence quenching mechanism of 2,9-DMP by mercury(II) was investigated and clarified by the data of single crystal X-ray diffraction of MOFs and the Job's plot analyses of 2,9-DMP towards Hg(II).
研究领域:
分析化学
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环境科学
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材料科学
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DOI
高影响因子
INTERNATIONAL JOURNAL OF ONCOLOGY
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2016
·Vol. 49
·期 2
·691-699
·
IF 3.018
Zhen Zhang,Huiyun Wang,Qibao Wang,Maocai Yan,Huannan Wang,Caifeng Bi,Shanshan Sun,Yuhua Fan
Metal-containing compounds have been extensively studied for many years as potent proteasome inhibitors. The 20S proteasome, the main component of the ubiquitin proteasome pathway, is one of the excellent targets in anticancer drug development. We recently reported that several copper complexes were able to inhibit cancer-special proteasome and induce cell death in human cancer cells. However, the involved molecular mechanism is not known yet. We therefore synthesized three copper complexes and investigated their abilities on inhibiting proteasome activity and inducting apoptosis in human breast cancer cells. Furthermore, we employed molecular dockings to analyze the possible interaction between the synthetic copper complexes and the β5 subunit of proteasome which only reflects the chymotrypsin-like activity. Our results demonstrate that three Cu(II) complexes possess potent proteasome inhibition capability in a dose-dependent and time-dependent manner in MDA-MB-231 human breast cancer cells. They could bind to the β5 subunit of the 20S proteasome, which consequently cause deactivation of the proteasome and tumor cell death. The present study is significant for providing important theoretical basis for design and synthesis of anticancer drugs with low toxicity, high efficiency and high selectivity.
研究领域:
癌症研究
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药物化学
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分子生物学
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计算化学
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产品关联
DOI
PubMed
高影响因子
Advanced Optical Materials
·
2025
·
IF 7.2
Siyu Li,Yakun Zhang,Dongxue Sun,Baoli Gao,Bingbing Zhang,Daqing Yang,Ying Wang
Birefringent crystals exhibit strong light modulation and polarization capabilities, playing a crucial role in optical components. By optimizing crystal structures, particularly through the design of low-dimensional materials, the birefringence properties can be significantly enhanced. In this work, 1,10-phenanthroline is selected as the organic ligand, and d 10 electronic configuration cation Zn 2+ as the metal center, combined with Cl⁻ anions for structural regulation. Through this rational design, a novel 0D organic–inorganic hybrid metal halide (OIMH), (C₁₂H₈N₂)ZnCl₂, was successfully synthesized. (C 12 H 8 N 2 )ZnCl 2 exhibits a large birefringence of 0.70@546 nm. First-principles calculations and structural analysis indicate that the anomalous birefringence originates predominantly from C−H···Cl hydrogen bonding between the [C 12 H 8 N 2 ] and [ZnCl 2 ], as well as their highly ordered spatial arrangement. Furthermore, (C₁₂H₈N₂)ZnCl₂ exhibits remarkable thermal stability (431 °C) and a short-wavelength UV cutoff edge (368 nm), achieving an optimal balance between birefringence and bandgap properties. This work provides fundamental insights into the rational design of high-performance birefringent crystals in low-dimensional OIMHs.
研究领域:
材料科学
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光学
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无机化学
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固态物理
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晶体工程
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DOI
高影响因子
Journal of Materials Chemistry C
·
2017
·Vol. 5
·期 22
·5411-5419
·
IF 5.256
Yajuan Li,Xudong Yu,Tao Yu
A novel Eu-containing SBA-15 mesoporous hybrid material with multicolor emission modulated by fluoride ion was synthesized. First, the organic ligand 1-(2-naphthoyl)-3,3,3-trifluoroacetonate (NTA) was modified by the silane coupling agent 3-(triethoxysilyl)propylisocyanate to form an alkene precursor (NTA-Si), which was covalently grafted onto a mesoporous SBA-15 backbone through co-hydrolysis and co-condensation reactions; as a result, mesoporous hybrid NTA-S15 was obtained. 2-(2-Carboxylphenyl)-imidazo[4,5-f]-1,10-phenanthroline (L) was used as the second ligand, whose two pyridine N atoms coordinate with europium ions and sensitize the luminescence of Eu3+, and the NH group of the imidazole ring and –COOH group formed hydrogen bonds with fluoride ions. Finally, after the coordination reaction between Eu3+ and the organic ligands (NTA-S15 and L), the mesoporous hybrid material Eu(NTA-S15)3L was obtained. Fourier transform infrared, small-angle X-ray diffraction, N2 adsorption measurements, transmission electron microscopy, and scanning electron microscopy were performed, and photoluminescence spectra and thermogravimetric plots were characterized. The results show that Eu(NTA-S15)3L displays a high surface area, uniform mesostructure, good thermal stability, and excellent photophysical properties. Furthermore, Eu(NTA-S15)3L exhibits a highly sensitive sensing function toward the fluoride ion. More importantly, tunable multicolor emissions, which cover nearly the entire visible region, can be readily achieved by varying fluoride ion concentrations under a single-wavelength excitation.
研究领域:
材料科学
·
化学
·
分析化学
·
纳米技术
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产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2023
·
IF 11.4
Binbin Shao,Jing Deng,Hongyu Dong,Shuchang Wang,Enchao Li,Xiaohong Guan
Recent research has primarily focused on the utilization of reductants as activators for Fe(VI) to generate high-valent iron species (Fe(IV)/Fe(V)) for the degradation of emerging organic contaminants (EOCs). However, a significant drawback of this approach arises from the reaction between reductants and ferrates, leading to a decrease in oxidation capacity. This study introduces a novel discovery that highlights the potential of the iron(III)-(1,10-phenanthroline) (Fe(III)-Phen) complex as an activator, effectively enhancing the degradation of EOCs by Fe(VI) and augmenting the overall oxidation capacity of Fe(VI). The degradation of EOCs in the Fe(VI)/Fe(III)-Phen system is facilitated through two mechanisms: a direct electron transfer (DET) process and electron shuttle action. The DET process involves the formation of a Phen-Fe(III)–Fe(VI)* complex, which exhibits a stronger oxidation ability than Fe(VI) alone and can accept electrons directly from EOCs. On the other hand, the electron shuttle process utilizes Fe(III)-Phen as a redox mediator to transfer electrons from EOCs to Fe(VI) through the Fe(IV)/Fe(III) or Fe(IV)/Fe(II)/Fe(III) cycle. Moreover, the Fe(III)-Phen complex can improve the utilization efficiency of Fe(V) by preventing its self-decay. This study’s findings may present a viable option for utilizing an effective catalyst to enhance the oxidation of EOCs by Fe(VI) and Fe(V).
研究领域:
环境化学
·
水处理
·
高级氧化过程
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产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2018
·Vol. 42
·期 18
·15061-15067
·
IF 3.201
Jing Ma,Bing Yan
We prepared multi-component luminescent hybrid films based on a silicon chip by a covalent functionalization strategy of both metal–organic frameworks (ZIF-90) and lanthanide complexes. Herein the Si chip is firstly covalently modified by aminopropyltriethoxysilane (APTES) via a hydrolysis and condensation reaction, and then ZIF-90 is covalently grafted onto the surface of Si chip through imine condensation with APTES to form the hybrid films (Si-APTES-ZIF-90). Ternary lanthanide complexes with 3-methacryloxypropyltrimethoxysilane (MPTMS) and Phen (1,10-phenanthroline) are introduced to the above film systems through MPTMS as a covalent linker. The final multi-component hybrid films (Phen-Ln-MPTMS-Si-APTES-ZIF-90) display the typical Ln3+ (Ln = Eu, Tb, Sm and Dy) luminescence through the energy transfer from the MPTMS-Si-APTES-ZIF-90 host. Moreover, fine tuning of the luminescence color for these films is discussed by adjusting the excitation wavelength. Phen-Ln-MPTMS-Si-APTES-ZIF-90 (Ln = Eu, Sm, Dy) can exhibit white color emission closely by selective excitation. In addition, the consolidation stability under airflow of the film and the luminescence stability of the film under certain humidity environments are discussed.
研究领域:
材料科学
·
化学
·
光学
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DOI
高影响因子
DALTON TRANSACTIONS
·
2023
·Vol. 52
·期 23
·8142-8154
·
IF 4
You-Hui Zhao,Hai-Yan Li,David James Young,Xiangqian Cao,Da-Liang Zhu,Zhi-Gang Ren,Hong-Xi Li
Earth-abundant copper(I) coordination complexes of an imine-phosphine and a diimine have been developed as visible-light photocatalysts. Reaction of [Cu(MeCN)4]BF4 with hetero-bidentate phosphinopyrazole (phpz) ligand R1R2C3HN2PPh3 (R1 = R2 = H (1a); R1 = H, R2 = Me (1b); R1 = H, R2 = Ph (1c); R1 = R2 = Me (1d)) and 2,9-dimethyl-1,10-phenanthroline (dmp) gave four heteroleptic bis-chelate Cu(I) complexes [Cu(dmp)(R1R2C3HN2PPh3)]BF4 (R1 = R2 = H (2a); R1 = H, R2 = Me (2b); R1 = H, R2 = Ph (2c); R1 = R2 = Me (2d)) with distorted tetrahedral geometries. Complexes 2a–2d exhibited broad absorption in the visible spectrum and could facilitate photochemical intermolecular atom-transfer radical addition reactions of CBr4, or CCl3Br, CHI3 to styrenes in yields up to 91% and with a broad substrate scope. The absorption, emission, redox potential and photocatalytic activity were dependent on the substituents on the phpz ligand. Mechanistic studies supported an atom-transfer radical addition (ATRA) mechanism.
研究领域:
无机化学
·
光化学
·
催化
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DOI
高影响因子
危险品化学品经营许可证（带存储）