Nickel(II) cluster-based mixed-cation coordination polymer synthesized from 2-mercaptobenzoic acid and its application

High-nuclearity metal clusters have received considerable attention not only because of their diverse architectures and topologies, but also because of their potential applications as functional materials in many fields. To explore new types of clusters and their potential applications, a new nickel(II) cluster-based mixed-cation coordination polymer, namely poly[hexakis[μ4-(2-carboxylatophenyl)sulfanido]di-μ3-chlorido-tri-μ2-hydroxido-octanickel(II)sodium(I)], [Ni8NaCl2(OH)3(C7H4O2S)6] n , 1, was synthesized using nickel chloride hexahydrate and mercaptobenzoic acid (H2mba) as starting reactants under hydrothermal conditions. The material was characterized by single-crystal X-ray diffraction (SCXRD), Fourier transform IR spectroscopy, thermogravimetric analysis, powder X-ray diffraction and X-ray photoelectron spectroscopy analysis. SCXRD shows that 1 consists of a hexanuclear nickel(II) [Ni6] cluster, dinuclear NiII nodes and a mononuclear NaI node, resulting in the formation of a complex covalent three-dimensional network. In addition, a tightly packed NiO/C&S nanocomposite is fabricated by sintering the coordination precursor at 400 °C. The uniform nanocomposite consists of NiO nanoparticles, incompletely carbonized carbon and incompletely vulcanized sulfur. When used as a supercapacitor electrode, the synthesized composite shows an extra-long cycling stability (>5000 cycles) during the charge/discharge process.

Download Full-text

A new twofold interpenetrated two-dimensional cadmium(II) coordination polymer constructed from 2,2′-(benzene-1,4-dicarboxamido)dipropionate

Acta Crystallographica Section C Structural Chemistry ◽

10.1107/s2053229618013967 ◽

2018 ◽

Vol 74 (11) ◽

pp. 1434-1439

Author(s):

Hong-Tao Zhang ◽

Xiao-Long Wang

Keyword(s):

Coordination Polymer ◽

Coordination Polymers ◽

Self Assembly ◽

Fluorescence Emission ◽

Functional Materials ◽

Two Dimensional ◽

X Ray Diffraction ◽

X Ray ◽

Carboxylate Groups ◽

Potential Applications

In recent years, much initial interest and enthusiasm has focused on the self-assembly of coordination polymers due to the aesthetics of their crystalline architectures and their potential applications as new functional materials. As part of an exploration of chiral coordination polymers, a new twofold interpenetrated two-dimensional (2D) coordination polymer, namely, poly[[tetraaquabis[μ3-(2R,2′R)-2,2′-(benzene-1,4-dicarboxamido)dipropionato-κ5 O,O′:O′′,O′′′:O′′]dicadmium(II)] trihydrate], {[Cd2(C14H14N2O6)2(H2O)4]·3H2O} n , has been synthesized by the reaction of Cd(CH3COO)2·2H2O with the designed ligand (2R,2′R)-2,2′-(benzene-1,4-dicarboxamido)dipropionic acid (H2 L). The compound has been structurally characterized by elemental analysis, IR spectroscopy, powder X-ray diffraction and single-crystal X-ray diffraction analysis. In the crystal structure, each CdII cation binds to three carboxylate groups from two crystallographically independent L 2− dianions. Four carboxylate groups link two crystallographically independent cadmium cations into a 4,4-connected secondary building unit (SBU). The resulting SBUs are extended into a two-dimensional folding sheet via the terephthalamide moiety of the ligand as a spacer, which can be simplified as a (4,4)-connected 4,4L15 net with the point symbol (3.53.62)(32.52.62). In the lattice, two independent folding sheets interpenetrate each other to yield a double-sheet layer. The resulting 2D layers pack in parallel arrays through intermolecular hydrogen bonds and interlayer π–π interactions. The thermal stability and photoluminescence properties of the title compound have been investigated and it exhibits an enhanced fluorescence emission and a longer lifetime compared with free H2 L.

Download Full-text

Synthesis of Three-Dimensional Fe3O4/Graphene Aerogels for the Removal of Arsenic Ions from Water

Journal of Nanomaterials ◽

10.1155/2015/864864 ◽

2015 ◽

Vol 2015 ◽

pp. 1-6 ◽

Cited By ~ 10

Author(s):

Yan Ye ◽

Da Yin ◽

Bin Wang ◽

Qingwen Zhang

Keyword(s):

Electron Microscopy ◽

Photoelectron Spectroscopy ◽

3D Structure ◽

Three Dimensional ◽

X Ray Diffraction ◽

X Ray ◽

Graphene Aerogels ◽

Transmission Electron ◽

Potential Applications ◽

Removal Of Arsenic

We report the synthesis of three-dimensional Fe3O4/graphene aerogels (GAs) and their application for the removal of arsenic (As) ions from water. The morphology and properties of Fe3O4/GAs have been characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and superconducting quantum inference device. The 3D nanostructure shows that iron oxide nanoparticles are decorated on graphene with an interconnected network structure. It is found that Fe3O4/GAs own a capacity of As(V) ions adsorption up to 40.048 mg/g due to their remarkable 3D structure and existence of magnetic Fe3O4nanoparticles for separation. The adsorption isotherm matches well with the Langmuir model and kinetic analysis suggests that the adsorption process is pseudo-second-ordered. In addition to the excellent adsorption capability, Fe3O4/GAs can be easily and effectively separated from water, indicating potential applications in water treatment.

Download Full-text

Hydrothermal synthesis, crystal structure and properties of a two-dimensional uranyl coordination polymer based on a flexible zwitterionic ligand

Acta Crystallographica Section C Structural Chemistry ◽

10.1107/s2053229618002279 ◽

2018 ◽

Vol 74 (3) ◽

pp. 366-371 ◽

Cited By ~ 1

Author(s):

Wen Cui ◽

Ruyu Wang ◽

Xi Shu ◽

Yu Fan ◽

Yang Liu ◽

...

Keyword(s):

Coordination Polymer ◽

Hydrothermal Reaction ◽

Two Dimensional ◽

X Ray Diffraction ◽

Uranyl Compounds ◽

X Ray ◽

Potential Applications ◽

Ft Ir ◽

Fuel Reprocessing ◽

Ft Ir Spectroscopy

The interaction between the uranyl cation, (UO2)2+, and organic species is of interest due to the potential applications of the resulting compounds with regard to nuclear waste disposal and nuclear fuel reprocessing. The hydrothermal reaction of various uranyl compounds with flexible zwitterionic 1,1′-[1,4-phenylenebis(methylene)]bis(pyridin-1-ium-4-carboxylate) dihydrochloride (Bpmb·2HCl) in deionized water containing drops of H2SO4resulted in the formation of a novel two-dimensional uranyl coordination polymer, namely poly[tetraoxido{μ2-1,1′-[1,4-phenylenebis(methylene)]bis(pyridin-1-ium-4-carboxylate)}di-μ3-sulfato-diuranium(VI)], [(UO2)2(SO4)2(C20H16N2O4)]n, (1). Single-crystal X-ray diffraction reveals that this coordination polymer exhibits a layered arrangement and the (UO2)2+centre is coordinated by five equatorial O atoms. The structure was further characterized by FT–IR spectroscopy, powder X-ray diffraction (PXRD) and thermogravimetric analysis (TGA). The polymer shows high thermal stability up to 696 K. Furthermore, the photoluminescence properties of (1) has also been studied, showing it to exhibit a typical uranyl fluorescence.

Download Full-text

An Efficient Simple Hydrothermal Method to Synthesis FeS2 Microspheres and their Optical Property

Materials Science Forum ◽

10.4028/www.scientific.net/msf.847.72 ◽

2016 ◽

Vol 847 ◽

pp. 72-77

Author(s):

Yu Xuan Liang ◽

Peng Peng Bai ◽

Shu Qi Zheng

Keyword(s):

Photoelectron Spectroscopy ◽

Low Cost ◽

Wave Length ◽

Functional Materials ◽

Optical And Electrical Properties ◽

X Ray Diffraction ◽

Synthetic Sample ◽

X Ray ◽

New Type ◽

Good Uniformity

Pyrite (FeS2) is an important semiconductor material which shows various excellent optical and electrical properties and extensive applied prospect as a new-type, photoelectrical functional materials. In this study, a low cost and efficient simple hydrothermal two-step synthetic method was given to obtain FeS2 microspheres with 2-3 μm in diameter. The obtained products were characterized with X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and ultraviolet and visible spectrophotometer (UV-Vis). XRD showed that the synthetic sample consisted of two crystal structures of FeS2, pyrite and marcasite. SEM observation indicated that FeS2 microspheres were well crystallized and had good uniformity. UV-Vis spectrum had a strong optical absorption in the region of 200-400 nm wave length. The reaction temperature had an impact on the size of FeS2 microspheres. A possible mechanism for the size of the FeS2 microspheres generated at high temperature is smaller than that at low temperature is discussed.

Download Full-text

Low Cost Integrated Sensors Utilizing Patterned Nano-Structured Titania Arrays Fabricated Using a Simple Process

MRS Proceedings ◽

10.1557/proc-828-a7.5 ◽

2004 ◽

Vol 828 ◽

Author(s):

Zuruzi Abu Samah ◽

Andrei Kolmakov ◽

Martin Moskovits ◽

Noel C. MacDonald

Keyword(s):

Photoelectron Spectroscopy ◽

Low Cost ◽

Sol Gel ◽

X Ray Diffraction ◽

Aqueous Hydrogen Peroxide ◽

X Ray ◽

Sensing Systems ◽

Potential Applications ◽

Nano Wires ◽

Low Temperature Process

ABSTRACTUsing a novel low-temperature process, we demonstrate the facile integration of crack-free nanostructured titania (NST) as sensing elements in microsystems. Unlike conventional sol-gel methods, NST layers of interconnected nano-walls and nano-wires were formed by reacting Ti surfaces with aqueous hydrogen peroxide solution. Cracks were observed in NST layers formed on blanket Ti films but absent on arrays of patterned Ti pads below a threshold dimension. Analyses using TEM, high resolution SEM, X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) reveal that NST consists of anatase TiO2 nano-crystals. NST pads were found able to detect oxygen gas of a few ppm. NST pad arrays were integrated on rigid and flexible substrates with potential applications in low cost and wearable sensing systems.

Download Full-text

SYNTHESIS, CHARACTERIZATION AND THE APPLICABILITY OF β-CYCLODEXTRINS FUNCTIONALIZED MESOPOROUS SBA-15 MOLECULAR SIEVES

NANO ◽

10.1142/s1793292013500501 ◽

2013 ◽

Vol 08 (05) ◽

pp. 1350050

Author(s):

MIN GUAN ◽

HAI-PENG BI ◽

ZUYUAN WANG ◽

SHAOHUA BU ◽

LING HUANG ◽

...

Keyword(s):

Electron Microscopy ◽

Photoelectron Spectroscopy ◽

Molecular Sieves ◽

Nitrogen Adsorption ◽

X Ray Diffraction ◽

X Ray ◽

Adsorption Capacities ◽

Transmission Electron ◽

Potential Applications ◽

Adsorption Desorption

Mesoporous silicas SBA-15 are modified with β-Cyclodextrins (β-CD) by simple grafting method. β-CD functionalized SBA-15 was characterized by Fourier transform infrared (FTIR) spectroscopy, transmission electron microscopy (TEM), scanning electron microscopy (SEM), powder X-ray diffraction (PXRD), nitrogen adsorption–desorption measurements, thermogravimetric analysis (TGA) and X-ray photoelectron spectroscopy (XPS). Furthermore, the applicability of it is investigated through studying the adsorption properties of clenbuterol. It showed better adsorption capacities of clenbuterol than pure SBA-15. β-CD functionalized SBA-15 material has the potential applications in the treatment of clenbuterol contamination in food and environment science.

Download Full-text

Thermochromic and Femtosecond-Laser-Induced Damage Performance of Tungsten-Doped Vanadium Dioxide Films Prepared Using an Alloy Target

Materials ◽

10.3390/ma11091724 ◽

2018 ◽

Vol 11 (9) ◽

pp. 1724 ◽

Cited By ~ 4

Author(s):

Mao-Dong Zhu ◽

Chong Shan ◽

Cheng Li ◽

Hu Wang ◽

Hong-Ji Qi ◽

...

Keyword(s):

Femtosecond Laser ◽

Photoelectron Spectroscopy ◽

Femtosecond Laser Irradiation ◽

X Ray Diffraction ◽

X Ray ◽

Alloy Target ◽

Potential Applications ◽

Laser Induced Damage ◽

Vo2 Thin Films ◽

Switching Efficiency

Thermochromic tungsten-doped VO2 thin films were successfully fabricated using a W-V alloy target. X-ray diffraction analyses showed that the W-doped VO2 film had a preferred orientation of (011), and that the doping did not degrade the film crystallinity compared with that of the pure film. X-ray photoelectron spectroscopy and energy-dispersive spectroscopy showed that the doped 0.81 atom% tungsten replaced vanadium in the lattice of the film. The metal–insulator transition temperature of the W-doped VO2 film was reduced to 35.5 °C, which is close to room temperature. Additionally, the infrared transmittance modulation of the W-doped film at λ = 2500 nm reached 56%, indicating an excellent switching efficiency. The damage behavior of the W-doped VO2 film under a femtosecond-laser irradiation was experimentally investigated. Our results revealed that defect-related damages induced by the femtosecond laser are relevant for W-doped VO2 films. This study provides valuable insights into VO2 films for potential applications in laser protection.

Download Full-text

Synthesis, structural characterization and thermal properties of a new copper(II) one-dimensional coordination polymer based on bridgingN,N′-bis(2-hydroxybenzylidene)-2,2-dimethylpropane-1,3-diamine and dicyanamide ligands

Acta Crystallographica Section C Structural Chemistry ◽

10.1107/s2053229616000978 ◽

2016 ◽

Vol 72 (2) ◽

pp. 149-154 ◽

Cited By ~ 11

Author(s):

Cigdem Hopa ◽

Ismail Cokay

Keyword(s):

Coordination Polymer ◽

Functional Materials ◽

Asymmetric Unit ◽

Single Crystal Diffraction ◽

One Dimensional ◽

X Ray ◽

Design And Synthesis ◽

Polymeric Chains ◽

Potential Applications ◽

Polymeric Coordination

The design and synthesis of polymeric coordination compounds of 3dtransition metals are of great interest in the search for functional materials. The coordination chemistry of the copper(II) ion is of interest currently due to potential applications in the areas of molecular biology and magnetochemistry. A novel coordination polymer of CuIIwith bridgingN,N′-bis(2-hydroxyphenyl)-2,2-dimethylpropane-1,3-diamine (H2L-DM) and dicyanamide (dca) ligands,catena-poly[[[μ2-2,2-dimethyl-N,N′-bis(2-oxidobenzylidene)propane-1,3-diamine-1:2κ6O,N,N′,O′:O,O′]dicopper(II)]-di-μ-dicyanamido-1:2′κ2N1:N5;2:1′κ2N1:N5], [Cu2(C19H20N2O2)(C2N3)2]n, has been synthesized and characterized by CHN elemental analysis, IR spectroscopy, thermal analysis and X-ray single-crystal diffraction analysis. Structural studies show that the CuIIcentres in the dimeric asymmetric unit adopt distorted square-pyramidal geometries, as confirmed by the Addison parameter (τ) values. The chelating characteristics of theL-DM2−ligand results in the formation of a CuIIdimer with a double phenolate bridge in the asymmetric unit. In the crystal, the dimeric units are further linked to adjacent dimeric units through μ1,5-dca bridges to produce one-dimensional polymeric chains.

Download Full-text

Thin Films of Semiconducting SnSi Alloys Grown by Pulsed Laser Deposition

MRS Proceedings ◽

10.1557/proc-358-775 ◽

1994 ◽

Vol 358 ◽

Author(s):

Randolph E. Treece ◽

J. S. Horwitz ◽

D. B. Chrisey ◽

J. Tang ◽

R. S. Williams

Keyword(s):

Pulsed Laser Deposition ◽

Photoelectron Spectroscopy ◽

Pulsed Laser ◽

Laser Deposition ◽

X Rays ◽

X Ray Diffraction ◽

Temperature Dependent ◽

Target Holder ◽

X Ray ◽

Potential Applications

ABSTRACTSemiconducting SnxSi1−x (0≤x≤0.6) thin-film alloys have been grown by pulsed laser deposition (PLD). These new materials are amorphous to X-rays and display small positive optical band gaps, suggesting potential applications in solar cells. The tin silicide films were grown by depositing very thin (1–30 Å) alternating atomic layers from individual Sn and Si targets utilizing an automated multi-target holder coupled to a conventional PLD system. The value of x was selected by controlling the thickness of the atomic layers. The films were characterized by X-ray diffraction, optical absorption, Rutherford backscattering spectroscopy, temperature-dependent resistivity, and X-ray photoelectron spectroscopy. Tin segregation is prevented by keeping the Sn layer thickness below a critical value. Compositions beyond x > 0.6 led to semimetallic SnxSi1−x films with tin crystallites.

Download Full-text

Structure and Photoluminescence Properties of Thermally Synthesized V2O5 and Al-Doped V2O5 Nanostructures

Materials ◽

10.3390/ma14020359 ◽

2021 ◽

Vol 14 (2) ◽

pp. 359

Author(s):

Chih-Chiang Wang ◽

Chia-Lun Lu ◽

Fuh-Sheng Shieu ◽

Han C. Shih

Keyword(s):

Photoelectron Spectroscopy ◽

Chemical Vapor ◽

Growth Direction ◽

Photoluminescence Intensity ◽

X Ray Diffraction ◽

Smart Windows ◽

X Ray ◽

Transmission Electron ◽

Potential Applications ◽

Li Ion

Al-free and Al-doped V2O5 nanostructures were synthesized by a thermal-chemical vapor deposition (CVD) process on Si(100) at 850 °C under 1.2 × 10−1 Torr via a vapor-solid (V-S) mechanism. X-ray diffraction (XRD), Raman, and high-resolution transmission electron microscopy (HRTEM) confirmed a typical orthorhombic V2O5 with the growth direction along [110]-direction of both nanostructures. Metallic Al, rather than Al3+-ion, was detected by X-ray photoelectron spectroscopy (XPS), affected the V2O5 crystallinity. The photoluminescence intensity of V2O5 nanostructure at 1.77 and 1.94 eV decreased with the increasing Al-dopant by about 61.6% and 59.9%, attributing to the metallic Al intercalated between the V2O5-layers and/or filled in the oxygen vacancies, which behaved as electron sinks. Thus the Al-doped V2O5 nanostructure shows the potential applications in smart windows and the electrodic material in a Li-ion battery.

Download Full-text