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Triplex DNA Nanostructures: From Basic Properties to Applications

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      Most cited references 322

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      Selective gas adsorption and separation in metal-organic frameworks.

      Adsorptive separation is very important in industry. Generally, the process uses porous solid materials such as zeolites, activated carbons, or silica gels as adsorbents. With an ever increasing need for a more efficient, energy-saving, and environmentally benign procedure for gas separation, adsorbents with tailored structures and tunable surface properties must be found. Metal-organic frameworks (MOFs), constructed by metal-containing nodes connected by organic bridges, are such a new type of porous materials. They are promising candidates as adsorbents for gas separations due to their large surface areas, adjustable pore sizes and controllable properties, as well as acceptable thermal stability. This critical review starts with a brief introduction to gas separation and purification based on selective adsorption, followed by a review of gas selective adsorption in rigid and flexible MOFs. Based on possible mechanisms, selective adsorptions observed in MOFs are classified, and primary relationships between adsorption properties and framework features are analyzed. As a specific example of tailor-made MOFs, mesh-adjustable molecular sieves are emphasized and the underlying working mechanism elucidated. In addition to the experimental aspect, theoretical investigations from adsorption equilibrium to diffusion dynamics via molecular simulations are also briefly reviewed. Furthermore, gas separations in MOFs, including the molecular sieving effect, kinetic separation, the quantum sieving effect for H2/D2 separation, and MOF-based membranes are also summarized (227 references).
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        Carbon dioxide capture in metal-organic frameworks.

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          The chemistry and applications of metal-organic frameworks.

          Crystalline metal-organic frameworks (MOFs) are formed by reticular synthesis, which creates strong bonds between inorganic and organic units. Careful selection of MOF constituents can yield crystals of ultrahigh porosity and high thermal and chemical stability. These characteristics allow the interior of MOFs to be chemically altered for use in gas separation, gas storage, and catalysis, among other applications. The precision commonly exercised in their chemical modification and the ability to expand their metrics without changing the underlying topology have not been achieved with other solids. MOFs whose chemical composition and shape of building units can be multiply varied within a particular structure already exist and may lead to materials that offer a synergistic combination of properties.
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            Author and article information

            Affiliations
            [1 ]Institute of Chemistry; The Hebrew University of Jerusalem; Jerusalem 91904 Israel
            [2 ]Department of Chemistry; University of Rome; Tor Vergata, via della Ricerca Scientifica 00133 Rome Italy
            Journal
            Angewandte Chemie International Edition
            Angew. Chem. Int. Ed.
            Wiley
            14337851
            November 27 2017
            November 27 2017
            November 08 2017
            : 56
            : 48
            : 15210-15233
            10.1002/anie.201701868
            © 2017

            http://doi.wiley.com/10.1002/tdm_license_1.1

            http://onlinelibrary.wiley.com/termsAndConditions#vor

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