نتایج جستجو برای: polyoxometalates poms

تعداد نتایج: 1237  

Journal: :Dalton transactions 2014
William Salomon François-Joseph Yazigi Catherine Roch-Marchal Pierre Mialane Patricia Horcajada Christian Serre Mohamed Haouas Francis Taulelle Anne Dolbecq

The encapsulation of three different cobalt substituted polyoxometalates (POMs) within the mesoporous chromium(iii) terephthalate MIL-101(Cr) metal-organic framework (MOF) was studied by a simple and green impregnation method using water. The POM@MIL composite materials were fully characterized by EDX, XRPD, IR, MAS NMR and N2 porosimetry measurements. The encapsulated POMs were then extracted ...

2016
Christian Molitor Aleksandar Bijelic Annette Rompel

The chemistry of polyoxometalates (POMs) in a protein environment is an almost unexplored but highly relevant research field as important biological and pharmacological attributes of certain POMs are based on their interactions with proteins. We report on the A-type Anderson-Evans polyoxotungstate, [TeW6O24]6- (TEW), mediated crystallization of Coreopsis grandiflora aurone synthase (cgAUS1) usi...

Journal: :Soft matter 2014
Liying Zhang Haolong Li Lixin Wu

The block copolymers (BCs), as structure-directing agents, co-assembling with nanoscale inorganic additives is an important route to fabricate nanostructured hybrid materials. In this work, we present a facile approach to fabricate hybrid micelles composed of BCs and polyoxometalates (POMs), in which the POM clusters are premodified with the groups that can specifically interact with a certain ...

Journal: :Optical Materials 2022

We report the second harmonic scattering experiments from acetonitrile liquid suspensions of two-dimensional metal dichalcogenide nanoflakes,: semiconducting MoS2 and WS2, metallic NbS2, semi-metallic ZrTe2. Because study is directly performed in phase, no symmetry breaking can be attributed to a supporting substrate as it often case investigation generation efficiency for these materials. A co...

Journal: :Dalton transactions 2010
Shiwei Lin Wenli Liu Yangguang Li Qiong Wu Enbo Wang Zhiming Zhang

Ionothermal synthesis was applied to the formation of polyoxometalates (POMs) and two new compounds [EMIM](8)Na(9)[WFe(9)(micro(3)-O)(3)(micro(2)-OH)(6)O(4)H(2)O(SiW(9)O(34))(3)].7H(2)O (, [EMIM](8)Na(9)[].7H(2)O, EMIM = 1-ethyl-3-methylimidazolium) and [EMIM](4)[SiMo(12)O(40)].12H(2)O (), have been successfully produced in the ionic liquid (IL) [EMIM](4)Br. They were characterized by single-cr...

Journal: :Physical chemistry chemical physics : PCCP 2014
Wei Chen Lujiang Huang Jun Hu Tengfei Li Feifei Jia Yu-Fei Song

Carbon nanotubes (CNTs) possess excellent structural and electronic properties and have been widely investigated as anode materials. Polyoxometalates (POMs) exhibit superior physical properties such as electronic versatility, redox characteristics and unique molecular structures. In this paper, we report the covalent modification of carbon nanotubes (CNTs) with organosilica-containing polyoxome...

2017
Meng Li Yijia Guan Andong Zhao Jinsong Ren Xiaogang Qu

Development of sensitive detectors of Aβ aggregates and effective inhibitors of Aβ aggregation are of diagnostic importance and therapeutic implications for Alzheimer's disease (AD) treatment. Herein, a novel strategy has been presented by self-assembly of peptide conjugated Au nanorods (AuP) as multifunctional Aβ fibrillization detectors and inhibitors. Our design combines the unique high NIR ...

2016
Chenggang Ci Hongsheng Liu Likai Yan Zhongmin Su

Aqua-coordinated sandwich-type polyoxometalates (POMs), {[WZnTM2(H2O)2](ZnW9O34)2} n- (TM=RhIII, PdII, and PtII), catalyze olefin epoxidation with hydrogen peroxide and have been well established, and they present an advance toward the utilization of olefins. To elucidate the epoxidation mechanism, we systematically performed density functional calculations. The reaction proceeds through a two-...

Journal: :Physical chemistry chemical physics : PCCP 2011
Laia Vilà-Nadal Scott G Mitchell Antonio Rodríguez-Fortea Haralampos N Miras Leroy Cronin Josep M Poblet

A complimentary combination of Density Functional Theory (DFT) methodology and Electrospray Ionization-Mass Spectrometry (ESI-MS) has been utilized to increase our limited understanding of the first nucleation steps in the formation of the [XM(12)O(40)](n-) Keggin polyoxometalates (POMs) (where addenda metal atom M = W or Mo, and the heteroatom X = P or As). We postulate that the first key step...

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