Amorphous Infinite Coordination Polymer Microparticles: A New Class of Selective Hydrogen Storage Materials

Advanced Materials (Impact Factor: 14.83). 05/2008; 20(11):2105 - 2110. DOI: 10.1002/adma.200702605
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    ABSTRACT: The title compound 1, with the formula of [Zn(C 44 H 48 N 2 O 6 )·DMF] 2 , is a Zn-salen complex. The asymmetric unit of the complex contains two subtle different molecules of the complex. The Zn center adopts a distorted square pyramidal geometry with the equatorial plane occupied by the central N 2 O 2 donors of the salen ligand and the apical position by one oxygen atom of DMF molecule. The zinc salen complex extends its structure via intermolecular hydrogen bonding interactions and CH···π interactions. The title compound is potentially a good building block for the construction of highly porous metal-organic frameworks (MOFs) and homogeneous catalyst.
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    ABSTRACT: There is great potential in nanoscale science and technology, and construction of macrosized materials and systems possessing nanoscale structural features is a crucial factor in the everyday application of nanoscience and nanotechnology. Because nanoscale substances are often constructed through self-assembly of unit molecules and nanomaterials, control of the self-assembly process is required. In order to establish general guidelines for the fabrication of materials with nanoscale structural characteristics, i.e., nanoscaled materials, we introduce here examples of recent research in related fields categorised as: (i) self-assembled structures with forms generally determined by intrinsic interactions between molecules and/or unit nanomaterials, (ii) self-assemblies influenced by their surrounding media, especially interfacial environments, (iii) modulation of self-assembly by artificial operation or external stimuli. Examples are not limited to organic molecules, which are often regarded as the archetypal species in self-assembly chemistry, and many examples of inorganic assemblies and hybrid structures are included in this review.
    Nanoscale 02/2010; 2(2):198-214. · 6.73 Impact Factor
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    ABSTRACT: Ligand L (H3L=Glycylglycine, N-[1-(2-hydroxy,5-bromophenyl)propylidene]) has been prepared which contain flexible dipeptide group and substituted phenol group. The ligand react with Cu(NO3)2 to give the metallo-ligand [CuL]−, in which L acting as quadridentate ONNO chelate, coordinate to Cu(II) ion. The metallo-ligand [CuL]− is rigid and has multifunctional groups. Reaction of metallo-ligand with Sr(NO3)2 leads to the formation of the title complexes [Sr(H2O)4(CuL)2]· (CuL)·2.25H2O (1). This heteronuclear compound has been characterized by elemental analyses, spectroscopic analyses, and single crystal diffraction. Structural analyses reveal that the complex was crystallized in triclinic space group P-1 and has intricate 2D net-structure, which contain an infinite 1D [Sr(H2O)4(CuL)2]+ ladder-like structure. In addition ESR (electron spin resonance) property and thermogravimetric analysis of 1 are discussed in detail. KeywordsMetallo-ligand–ESR–Crystal structure–Dipeptide–Coordination polymer
    Journal of Inorganic and Organometallic Polymers and Materials 03/2010; 21(1):165-170. · 1.17 Impact Factor