Gas storage in porous aromatic frameworks (PAFs)

A series of porous aromatic frameworks (PAFs) were synthesized via a Yamamoto-type Ullmann reaction containing quadricovalent Si (PAF-3) and Ge (PAF-4). These PAFs are thermally stable up to 465 °C for PAF-3 and 443 °C for PAF-4, corresponding to a 5% weight loss according to the TG pattern. As PAF-1, they exhibit high surface areas (up to 2932 m2 g−1) and excellent adsorption ability to hydrogen, methane and carbon dioxide. Low pressure gas uptake experiments on PAFs show PAF-3 has the highest heat of adsorption (Qst) of hydrogen (6.6 kJ mol−1) and carbon dioxide (19.2 kJ mol−1), while PAF-4 has the highest Qst for methane adsorption (23.2 kJ mol−1) among PAFs. Gas molecule recognition at 273 K was performed and results show only greenhouse gases such as carbon dioxide and methane could be adsorbed onto PAFs.

[1]  Randall Q. Snurr,et al.  Ultrahigh Porosity in Metal-Organic Frameworks , 2010, Science.

[2]  E. Teller,et al.  ADSORPTION OF GASES IN MULTIMOLECULAR LAYERS , 1938 .

[3]  Gérard Férey,et al.  Porous metal-organic-framework nanoscale carriers as a potential platform for drug delivery and imaging. , 2010, Nature materials.

[4]  D. Jiang,et al.  Light-harvesting conjugated microporous polymers: rapid and highly efficient flow of light energy with a porous polyphenylene framework as antenna. , 2010, Journal of the American Chemical Society.

[5]  M. Kanatzidis,et al.  An interpenetrated framework material with hysteretic CO(2) uptake. , 2010, Chemistry.

[6]  Markus Antonietti,et al.  From microporous regular frameworks to mesoporous materials with ultrahigh surface area: dynamic reorganization of porous polymer networks. , 2008, Journal of the American Chemical Society.

[7]  Saad Makhseed,et al.  Polymers of intrinsic microporosity (PIMs): bridging the void between microporous and polymeric materials. , 2005, Chemistry.

[8]  S. Wan,et al.  A photoconductive covalent organic framework: self-condensed arene cubes composed of eclipsed 2D polypyrene sheets for photocurrent generation. , 2009, Angewandte Chemie.

[9]  Michael O'Keeffe,et al.  Porous, Crystalline, Covalent Organic Frameworks , 2005, Science.

[10]  Michael O'Keeffe,et al.  Designed Synthesis of 3D Covalent Organic Frameworks , 2007, Science.

[11]  R. Stuart Haszeldine,et al.  Carbon Capture and Storage: How Green Can Black Be? , 2009, Science.

[12]  V. Davankov,et al.  Hypercrosslinked polymers: basic principle of preparing the new class of polymeric materials , 2002 .

[13]  A. Cooper,et al.  High Surface Area Networks from Tetrahedral Monomers: Metal-Catalyzed Coupling, Thermal Polymerization, and “Click” Chemistry , 2010 .

[14]  Wenchuan Wang,et al.  Targeted synthesis of a porous aromatic framework with high stability and exceptionally high surface area. , 2009, Angewandte Chemie.

[15]  J. Wuest,et al.  Derivatives of tetraphenylmethane and tetraphenylsilane: Synthesis of new tetrahedral building blocks for molecular construction , 2003 .

[16]  Neil L. Campbell,et al.  Conjugated microporous poly(aryleneethynylene) networks. , 2007, Angewandte Chemie.

[17]  S. Wan,et al.  A belt-shaped, blue luminescent, and semiconducting covalent organic framework. , 2008, Angewandte Chemie.

[18]  Markus Antonietti,et al.  Porous, covalent triazine-based frameworks prepared by ionothermal synthesis. , 2008, Angewandte Chemie.

[19]  S. Qiu,et al.  A covalently-linked microporous organic-inorganic hybrid framework containing polyhedral oligomeric silsesquioxane moieties. , 2011, Dalton transactions.

[20]  Neil L. Campbell,et al.  Hydrogen Storage in Microporous Hypercrosslinked Organic Polymer Networks , 2007 .

[21]  K. Müllen,et al.  Arylamine-substituted oligo(ladder-type pentaphenylene)s: electronic communication between bridged redox centers. , 2007, Journal of the American Chemical Society.

[22]  Takakazu Yamamoto.  π-Conjugated Polymers Bearing Electronic and Optical Functionalities. Preparation by Organometallic Polycondensations, Properties, and Their Applications , 1999 .

[23]  Michael O'Keeffe,et al.  Reticular synthesis and the design of new materials , 2003, Nature.

[24]  J. B. Lambert,et al.  Metal−Organic Frameworks from Silicon- and Germanium-Centered Tetrahedral Ligands , 2008 .

[25]  P. Budd,et al.  Polymers of intrinsic microporosity (PIMs): organic materials for membrane separations, heterogeneous catalysis and hydrogen storage. , 2006, Chemical Society reviews.

[26]  Bingbing Liu,et al.  Targeted synthesis of a 3D porous aromatic framework for selective sorption of benzene. , 2010, Chemical communications.