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8,044 Results Found

  • Article
  • Open Access
4 Citations
4,927 Views
20 Pages

This paper introduces a novel approach for storing Resource Description Framework (RDF) data based on the possibilities of Natural Language Addressing (NLA) and on a special NLA basic structure for storing Big Data, called “NLA-bit”, which is aimed t...

  • Feature Paper
  • Article
  • Open Access
20 Citations
3,106 Views
15 Pages

16 February 2023

The NiO-MgO solid solution has been proven to be an efficient catalyst for the carbon dioxide reforming of methane (CRM). However, the challenge is still there for the facilely controlled synthesis of the single-phase solid solution with the uniform...

  • Article
  • Open Access
13 Citations
11,430 Views
11 Pages

4 September 2009

Manganese-zinc-ferrite nanoparticles (Mn0.5Zn0.5Fe2O4, MZF-NPs) prepared by an improved co-precipitation method and were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD) and energy dispersive spectrometry (EDS). Then t...

  • Article
  • Open Access
9 Citations
4,522 Views
11 Pages

15 October 2020

The titanium dioxide (TiO2) nanostructures resulted by the pyrolysis of titanium tetrachloride (TiCl4) at a low temperature of 80 °C were found to be a mixture of amorphous TiO2 complexes and anatase nanostructures, whose ratio depends on the pH...

  • Feature Paper
  • Article
  • Open Access
27 Citations
7,273 Views
10 Pages

The blue sepal color of hydrangea is due to a metal complex anthocyanin composed of 3-O-glucosyldelphinidin (1) and an aluminum ion with the co-pigments 5-O-caffeoylquinic acid (2) and/or 5-O-p-coumaroylquinic acid (3). The three components, namely a...

  • Article
  • Open Access
6 Citations
3,988 Views
16 Pages

12 February 2021

The mobility of arsenic in aqueous systems can be controlled by its adsorption onto the surfaces of iron oxide minerals such as cobalt ferrite (Fe2CoO4). In this work, the adsorption energies, geometries, and vibrational properties of the most common...

  • Review
  • Open Access
11 Citations
4,786 Views
16 Pages

22 July 2022

Dioxygen (O2) is an environmentally benign and abundant oxidant whose utilization is of great interest in the design of bioinspired synthetic catalytic oxidation systems to reduce energy consumption. However, it is unfortunate that utilization of O2...

  • Article
  • Open Access
25 Citations
5,829 Views
13 Pages

9 February 2018

Metal-enhanced luminescence of lanthanide complexes by noble metal nanoparticles has attracted much attention because of its high efficiency in improving the luminescent properties of lanthanide ions. Herein, nine kinds of europium and terbium comple...

  • Article
  • Open Access
4 Citations
1,614 Views
14 Pages

Antimicrobial Activity of Nano-GeO2/CTAB Complex Against Fungi and Bacteria Isolated from Paper

  • Xu Geng,
  • Yan Wei,
  • Yuanxin Li,
  • Siqi Zhao,
  • Zhengqiang Li,
  • Heng Li and
  • Chen Li

18 December 2024

Microbial attack, particularly fungal degradation of cellulose, is a leading cause of paper damage. To address fungal spores and the rising concern of microbial drug resistance, a nano-Germanium dioxide (GeO2)/cetyltrimethylammonium bromide (CTAB) co...

  • Article
  • Open Access
186 Views
15 Pages

Strong CH…O Interactions in the Second Coordination Sphere of 1,10-Phenanthroline Complexes with Water

  • Sonja S. Zrilić,
  • Jelena M. Živković,
  • Dragan B. Ninković and
  • Snežana D. Zarić

16 December 2025

Although CH…O hydrogen bonds are generally very weak, here investigated CH…O interactions of coordinated 1,10-phenanthroline (phen) are very frequent and quite strong. In the crystal structures from the Cambridge Structural Database, 83...

  • Article
  • Open Access
32 Citations
8,918 Views
15 Pages

11 February 2014

A DNA/chitosan-Fe3O4 magnetic nanoparticle bio-complex film was constructed for the immobilization of horseradish peroxidase (HRP) on a glassy carbon electrode. HRP was simply mixed with DNA, chitosan and Fe3O4 nanoparticles, and then applied to the...

  • Review
  • Open Access
2 Citations
2,998 Views
15 Pages

Can O-GIcNAc Transferase (OGT) Complex Be Used as a Target for the Treatment of Hematological Malignancies?

  • Shiwei Zhuang,
  • Zhimei Liu,
  • Jinyao Wu,
  • Yudan Yao,
  • Zongyang Li,
  • Yanxiang Shen,
  • Bin Yu and
  • Donglu Wu

The circulatory system is a closed conduit system throughout the body and consists of two parts as follows: the cardiovascular system and the lymphatic system. Hematological malignancies usually grow and multiply in the circulatory system, directly o...

  • Article
  • Open Access
10 Citations
2,067 Views
12 Pages

Improvement of Peptidyl Copper Complexes Mimicking Catalase: A Subtle Balance between Thermodynamic Stability and Resistance towards H2O2 Degradation

  • Yaqine Ben Hadj Hammouda,
  • Koudedja Coulibaly,
  • Alimatou Bathily,
  • Magdalene Teoh Sook Han,
  • Clotilde Policar and
  • Nicolas Delsuc

26 August 2022

Catalase mimics are low molecular weight metal complexes that reproduce the activity of catalase, an antioxidant metalloprotein that participates in the cellular regulation of H2O2 concentration by catalyzing its dismutation. H2O2 is a reactive oxyge...

  • Article
  • Open Access
4 Citations
2,760 Views
13 Pages

NIR-Fluorescent Hybrid Materials of Tm3+ Complexes Carried by Nano-SiO2 via Improved Sol–Gel Method

  • Yanxin Wang,
  • Qiuyu Sun,
  • Linjun Huang,
  • Peng Lu,
  • Xiaozhen Wang,
  • Zhe Zhang,
  • Yao Wang,
  • Jianguo Tang and
  • Laurence A. Belfiore

3 October 2020

Tm3+ has obvious emission characteristics in the near-infrared band. Thulium ions combined with different organic ligands lead to different fluorescent properties. In the near-infrared region, Tm3+ is a down-conversion fluorescent material that is un...

  • Article
  • Open Access
8 Citations
2,654 Views
21 Pages

Impact of Copper(II)-Imidazole Complex Modification on Polycrystalline TiO2: Insights into Formation, Characterization, and Photocatalytic Performance

  • Ganeshraja Ayyakannu Sundaram,
  • Rajkumar Kanniah,
  • Krishnamoorthy Anbalagan,
  • Kaviyarasan Kulandaivelu and
  • Héctor Valdés

26 February 2024

Micrometer-sized polycrystalline anatase particles are widely used in materials and life sciences, serving as essential components in photocatalytic materials. The ability to tailor their composition, shape, morphology, and functionality holds signif...

  • Feature Paper
  • Article
  • Open Access
3 Citations
3,566 Views
26 Pages

7 September 2021

Mn and Fe BPMEN complexes showed excellent reactivity in catalytic oxidation with an excess of co-reagent (CH3COOH). In the straight line of a cleaner catalytic system, volatile acetic acid was replaced by SiO2 (nano)particles with two different size...

  • Article
  • Open Access
1 Citations
3,379 Views
10 Pages

N,O-chelating dicarbonylhydrazido-palladium complexes were synthesized by treatment of 1,2-bis(trifluoroacetyl)hydrazine with a mixture of a Pd(0) source, [Pd(dba)2] (DBA = dibenzylideneacetone), and four-electron donors including 1,3-bis(diphenylpho...

  • Article
  • Open Access
13 Citations
5,740 Views
27 Pages

Synthesis and Structure of Novel Copper(II) Complexes with N,O- or N,N-Donors as Radical Scavengers and a Functional Model of the Active Sites in Metalloenzymes

  • Joanna Masternak,
  • Małgorzata Zienkiewicz-Machnik,
  • Iwona Łakomska,
  • Maciej Hodorowicz,
  • Katarzyna Kazimierczuk,
  • Milena Nosek,
  • Amelia Majkowska-Młynarczyk,
  • Joanna Wietrzyk and
  • Barbara Barszcz

To evaluate the antioxidant activity of potential synthetic enzyme mimetics, we prepared new five copper(II) complexes via a self-assembly method and named them [Cu(2-(HOCH2)py)3](ClO4)2 (1), [Cu(2-(HOCH2)py)2(H2O)2]SiF6 (2), [Cu2(2-(HOCH2CH2)py)2(2-...

  • Article
  • Open Access
4 Citations
2,380 Views
16 Pages

9 June 2023

Interaction of [VO(OiPr)3] with 6-bis(o-hydroxyaryl)pyridine, 2,6-{HOC(Ph)2CH2}2(NC5H3), LH2, afforded [VO(OiPr)L] (1) in good yield. The reaction of LNa2, generated in-situ from LH2 and NaH, with [VCl3(THF)3] led to the isolation of [VL2] (2) in whi...

  • Article
  • Open Access
6 Citations
4,222 Views
23 Pages

4 February 2024

The problem of atmospheric complex pollution led by PM2.5 and O3 has become an important factor restricting the improvement of air quality in China. In drawing on observations and Weather Research and Forecasting-Community Multiscale Air Quality (WRF...

  • Article
  • Open Access
2 Citations
2,145 Views
10 Pages

27 May 2023

The chelating aluminum complex [2-(Me2NCH2)C2B10H10]AlX2 (X = Br 3, CH3 4) was synthesized using 2-dimethylaminomethyl-o-carboranyl lithium (LiCabN, 2) with aluminum tribromide (AlBr3) or dimethylaluminum bromide (Me2AlBr), resulting in a modest...

  • Article
  • Open Access
22 Citations
4,205 Views
35 Pages

Structural Investigation of Hesperetin-7-O-Glucoside Inclusion Complex with β-Cyclodextrin: A Spectroscopic Assessment

  • Mahendra P. Kapoor,
  • Masamitsu Moriwaki,
  • Katsuhiko Minoura,
  • Derek Timm,
  • Aya Abe and
  • Kento Kito

24 August 2022

Flavonoids are biologically active natural products of great interest for their potential applications in functional foods and pharmaceuticals. A hesperetin-7-O-glucoside inclusion complex with β-cyclodextrin (HEPT7G/βCD; SunActive® HCD...

  • Article
  • Open Access
1 Citations
3,946 Views
10 Pages

3 October 2019

The reaction of [(Cp*Ir)2(μ-dmpm)(μ-H)][OTf] (2) [Cp* = η5-C5Me5, dmpm = bis(dimethylphosphino)methane] with 2,3-dihydrofuran gives [(Cp*IrH)2(μ-dmpm){μ-(2,3-dihydrofuranyl)}][OTf] (3) in an isolated yield of 70% via the C–H bon...

  • Feature Paper
  • Article
  • Open Access
21 Citations
4,890 Views
17 Pages

LaNiO3 Perovskite Synthesis through the EDTA–Citrate Complexing Method and Its Application to CO Oxidation

  • Daniela González-Varela,
  • Daniel G. Araiza,
  • Gabriela Díaz and
  • Heriberto Pfeiffer

5 January 2022

A series of LaNiO3 materials were synthesized by the EDTA–citrate complexing method, modifying different physicochemical conditions. The LaNiO3 samples were calcined between 600 and 800 °C and characterized by XRD, SEM, XPS, CO-TPD, TG, DT,...

  • Feature Paper
  • Article
  • Open Access
3 Citations
2,928 Views
22 Pages

15 April 2023

The potential energy surfaces of the reactions involved in the catalytic cleavage of 2-phenoxy-1-phenylethanol, a model of the β-O-4 linkage in lignin, by (iprPCP)-Ir, (iprPCOP)-Ir, (iprPCP)-Co and (iprPCOP)-Co complexes have been studied using...

  • Article
  • Open Access
13 Citations
6,993 Views
15 Pages

12 February 2015

We have prepared four new Cu(II) complexes containing valine moieties with imidazole ligands at the fourth coordination sites and examined their photo-induced reactions with TiO2 in order of understanding the reaction mechanisms. Under a nitrogen atm...

  • Article
  • Open Access
4 Citations
1,806 Views
15 Pages

1 July 2023

Modern electronic information technology has led social life into inevitable electromagnetic pollution, making microwave absorbing materials more and more important. Herein, dielectric-conductive ZnO/C hybrid composite absorbents were prepared by two...

  • Article
  • Open Access
17 Citations
6,842 Views
14 Pages

26 August 2018

Highly stable and active low-temperature CO oxidation catalysts without noble metals are desirable to achieve a sustainable society. While zero-dimensional to three-dimensional Co3O4 nanoparticles show high catalytic activity, simple-structured nanoc...

  • Article
  • Open Access
1 Citations
3,421 Views
13 Pages

9 April 2018

To precisely control the characteristics of complex oxides by heat treatment, the effect of FeO on the interfacial reactions that occur between an Fe–Mn–Si alloy and CaO–SiO2–Al2O3–MgO–MnO–FeO oxide was studied and clarified. Eight types of diffusion...

  • Article
  • Open Access
4 Citations
3,611 Views
14 Pages

11 September 2021

The characterization of competent intermediates of metal complexes, involved in catalytic transformations for the activation of small molecules, is an important target for mechanistic comprehension and catalyst design. Iron complexes deserve particul...

  • Article
  • Open Access
2 Citations
1,797 Views
14 Pages

On the Fragmentation of Ni(II) β-Diketonate-Diamine Complexes as Molecular Precursors for NiO Films: A Theoretical and Experimental Investigation

  • Cristiano Invernizzi,
  • Gloria Tabacchi,
  • Roberta Seraglia,
  • Mattia Benedet,
  • Marco Roverso,
  • Chiara Maccato,
  • Sara Bogialli,
  • Davide Barreca and
  • Ettore Fois

30 January 2024

NiO-based nanomaterials have attracted considerable interest for different applications, which have stimulated the implementation of various synthetic approaches aimed at modulating their chemico-physical properties. In this regard, their bottom-up p...

  • Article
  • Open Access
11 Citations
2,343 Views
21 Pages

Causes Investigation of PM2.5 and O3 Complex Pollution in a Typical Coastal City in the Bohai Bay Region of China in Autumn: Based on One-Month Continuous Intensive Observation and Model Simulation

  • Yuanyuan Ji,
  • Cong An,
  • Jinghao Tang,
  • Jialin Li,
  • Xiaoyu Yan,
  • Xiaoshuai Gao,
  • Wanghui Chu,
  • Xuelian Zhong,
  • Fanyi Shang and
  • Jidong Li
  • + 4 authors

7 January 2024

In order to investigate the causes of complex air pollution in coastal cities in the Bohai Rim of China, a one-month intensive field observation combined with model simulation was carried out in a typical city named Dongying in September 2022. The re...

  • Article
  • Open Access
5 Citations
8,614 Views
12 Pages

Highly Active Copolymerization of Ethylene and N-Acetyl-O-(ω-Alkenyl)-l-Tyrosine Ethyl Esters Catalyzed by Titanium Complex

  • Jing Wang,
  • Hongming Li,
  • Runcong Zhang,
  • Xianghui Shi,
  • Jianjun Yi,
  • Jian Wang,
  • Qigu Huang and
  • Wantai Yang

10 March 2016

A series of N-acetyl-O-(ω-alkenyl)-l-tyrosine ethyl esters were synthesized by the reaction of vinyl bromides (4-bromo-1-butene, 6-bromo-1-hexene, 8-bromo-1-octene and 10-bromo-1-decene) with N-acetyl-l-tyrosine ethyl ester. 1H NMR, elemental analysi...

  • Article
  • Open Access
1,554 Views
20 Pages

The Chelating Abilities of Tertiary Amines with N-O-Donors Towards Cu(II) Ions and the Catalytic Properties of the Resulting Complexes

  • Martina Zonzin,
  • Martina Chianese,
  • Andrea Squarcina,
  • Degnet Melese Dereje,
  • Ambra Campofelice,
  • Alessia Da Fermo,
  • Federica Belluti,
  • Nadia Marino,
  • Filip Dębicki and
  • Aleksandra Kotynia
  • + 3 authors

19 August 2025

Oxidative stress, driven by excess reactive oxygen species (ROS), is a key factor in the progression of neurodegenerative diseases like Alzheimer’s disease (AD). In this context, copper dysregulation can also contribute to this imbalance, being...

  • Article
  • Open Access
12 Citations
3,239 Views
12 Pages

24 May 2019

The purpose of this study was to synthesize high-quality recycled α-Fe2O3 to improve its complex permittivity properties by reducing the particles to nanosize through high energy ball milling. Complex permittivity and permeability characterizat...

  • Article
  • Open Access
29 Citations
6,929 Views
19 Pages

4 August 2015

Isoliquiritigenin (ILTG) possesses many pharmacological properties. However, its poor solubility and stability in water hinders its wide applications. The solubility of bioactive compounds can often be enhanced through preparation and delivery of var...

  • Article
  • Open Access
18 Citations
3,679 Views
16 Pages

Comparative Analysis of Secondary Organic Aerosol Formation during PM2.5 Pollution and Complex Pollution of PM2.5 and O3 in Chengdu, China

  • Tianli Song,
  • Miao Feng,
  • Danlin Song,
  • Song Liu,
  • Qinwen Tan,
  • Yuancheng Wang,
  • Yina Luo,
  • Xi Chen and
  • Fumo Yang

4 November 2022

Nowadays, many cities in China are suffering from both fine particulate matter (PM2.5, particulate matter with an aerodynamic diameter smaller than 2.5 µm) and ozone (O3) pollution. Secondary organic aerosol (SOA) is an important component of P...

  • Article
  • Open Access
19 Citations
8,274 Views
14 Pages

Microbial Natural Product Alternariol 5-O-Methyl Ether Inhibits HIV-1 Integration by Blocking Nuclear Import of the Pre-Integration Complex

  • Jiwei Ding,
  • Jianyuan Zhao,
  • Zhijun Yang,
  • Ling Ma,
  • Zeyun Mi,
  • Yanbing Wu,
  • Jiamei Guo,
  • Jinmin Zhou,
  • Xiaoyu Li and
  • Ying Guo
  • + 6 authors

10 May 2017

While Highly Active Antiretroviral Therapy (HAART) has significantly decreased the mortality of human immunodeficiency virus (HIV)-infected patients, emerging drug resistance to approved HIV-1 integrase inhibitors highlights the need to develop new a...

  • Article
  • Open Access
31 Citations
3,206 Views
18 Pages

A Novel Hybrid MPPT Technique Based on Harris Hawk Optimization (HHO) and Perturb and Observer (P&O) under Partial and Complex Partial Shading Conditions

  • Muhammad Annas Hafeez,
  • Ahmer Naeem,
  • Muhammad Akram,
  • Muhammad Yaqoob Javed,
  • Aamer Bilal Asghar and
  • Yong Wang

30 July 2022

Photovoltaic (PV) systems have been used extensively worldwide over the past few years due to the mitigation of fossils fuels; it is the best source because of its eco-friendly nature. In PV systems, the main research area concerns its performance un...

  • Article
  • Open Access
13 Citations
4,623 Views
27 Pages

19 February 2021

This research is focused on a synthesis of copper-cellulose phosphates antimicrobial complexes. Vapor-phase phosphorylations of cellulose were achieved by exposing microcrystalline cellulose to phosphorus trichloride (PCl3) vapors. The cellulose-O-di...

  • Article
  • Open Access
19 Citations
5,422 Views
18 Pages

Raman spectra of aqueous Ho3+, Er3+, Tm3+, Yb3+, and Lu3+-perchlorate solutions were measured over a large wavenumber range from 50–4180 cm−1. In the low wavenumber range (terahertz region), strongly polarized Raman bands were detected at...

  • Review
  • Open Access
18 Citations
4,181 Views
28 Pages

19 June 2022

A combination of different types of redox-active systems in one molecule makes it possible to create coordination compounds with extended redox abilities, combining molecular and electronic structures determined by the features of intra- and intermol...

  • Article
  • Open Access
1 Citations
2,254 Views
20 Pages

Homo- and Heterogeneous Benzyl Alcohol Catalytic Oxidation Promoted by Mononuclear Copper(II) Complexes: The Influence of the Ligand upon Product Conversion

  • Larissa Chimilouski,
  • William H. Slominski,
  • Ana I. Tillmann,
  • Daniella Will,
  • Aaron M. dos Santos,
  • Giliandro Farias,
  • Edmar Martendal,
  • Karine P. Naidek and
  • Fernando R. Xavier

The catalytic properties of three copper complexes, [Cu(en)2](ClO4)2 (1), [Cu(amp)2](ClO4)2, (2) and [Cu(bpy)2](ClO4)2 (3) (where en = ethylenediamine, amp = 2-aminomethylpyridine and bpy = 2,2′-bipyridine), were explored upon the oxidation of...

  • Article
  • Open Access
13 Citations
6,036 Views
20 Pages

7 December 2018

Aqueous solutions of Lu3+- perchlorate, triflate and chloride were measured by Raman spectroscopy. A weak, isotropic mode at 396 cm−1 (full width at half height (fwhh) at 50 cm−1) was observed in perchlorate and triflate solutions. This m...

  • Communication
  • Open Access
1 Citations
3,345 Views
13 Pages

Retromer Complex and PI3K Complex II-Related Genes Mediate the Yeast (Saccharomyces cerevisiae) Sodium Metabisulfite Resistance Response

  • Xuejiao Jin,
  • Huihui Zhao,
  • Min Zhou,
  • Jie Zhang,
  • Tingting An,
  • Wenhao Fu,
  • Danqi Li,
  • Xiuling Cao and
  • Beidong Liu

13 December 2021

Sodium metabisulfite (Na2S2O5) is widely used as a preservative in the food and wine industry. However, it causes varying degrees of cellular damage to organisms. In order to improve our knowledge regarding its cyto-toxicity, a genome-wide screen usi...

  • Article
  • Open Access
43 Citations
6,634 Views
15 Pages

Selective Separation of Scheelite from Calcite by Self-Assembly of H2SiO3 Polymer Using Al3+ in Pb-BHA Flotation

  • Zhao Wei,
  • Yuehua Hu,
  • Haisheng Han,
  • Wei Sun,
  • Ruolin Wang,
  • Wenjuan Sun,
  • Jianjun Wang,
  • Zhiyong Gao,
  • Li Wang and
  • Chenyang Zhang
  • + 2 authors

13 January 2019

The flotation separation of scheelite from calcite is problematic, where sodium silicate modified by polyvalent metal ions has shown some advantages for selective depression. In this study, an Al-Na2SiO3 polymer was used as the depressant for the flo...

  • Article
  • Open Access
12 Citations
3,330 Views
19 Pages

Effects of Recycled Fe2O3 Nanofiller on the Structural, Thermal, Mechanical, Dielectric, and Magnetic Properties of PTFE Matrix

  • Ahmad Mamoun Khamis,
  • Zulkifly Abbas,
  • Raba’ah Syahidah Azis,
  • Ebenezer Ekow Mensah and
  • Ibrahim Abubakar Alhaji

16 July 2021

The purpose of this study was to improve the dielectric, magnetic, and thermal properties of polytetrafluoroethylene (PTFE) composites using recycled Fe2O3 (rFe2O3) nanofiller. Hematite (Fe2O3) was recycled from mill scale waste and the particle size...

  • Article
  • Open Access
17 Citations
3,631 Views
13 Pages

Mechanism of Extracting Germanium from Ge-Containing Solution with Tannins

  • Yan Hong,
  • Haokai Di,
  • Shiwei Li,
  • Kun Yang and
  • Libo Zhang

15 April 2023

The process of germanium–tannin complex is the oldest form of technology for extracting germanium from Ge-containing solutions. This reaction mechanism is relatively controversial as it imposes restrictions on ideas and methods for reducing the...

  • Communication
  • Open Access
6 Citations
2,371 Views
10 Pages

Impedance-type humidity sensors based on EuCl2, Eu2O3 and EuCl2/Eu2O3 blend films were fabricated. The electrical properties of the pure EuCl2 and Eu2O3 films and EuCl2/Eu2O3 blend film that was blended with different amounts of EuCl2 were investigat...

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