Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Porous organic cages
AU - Tozawa, Tomokazu
AU - Jones, James T. A.
AU - Swamy, Shashikala I.
AU - Jiang, Shan
AU - Adams, Dave J.
AU - Shakespeare, Stephen
AU - Clowes, Rob
AU - Bradshaw, Darren
AU - Hasell, Tom
AU - Chong, Samantha Y.
AU - Tang, Chiu
AU - Thompson, Stephen
AU - Parker, Julia
AU - Trewin, Abbie
AU - Bacsa, John
AU - Slawin, Alexandra M. Z.
AU - Steiner, Alexander
AU - Cooper, Andrew I.
PY - 2009/12
Y1 - 2009/12
N2 - Porous materials are important in a wide range of applications including molecular separations and catalysis. We demonstrate that covalently bonded organic cages can assemble into crystalline microporous materials. The porosity is prefabricated and intrinsic to the molecular cage structure, as opposed to being formed by non-covalent self-assembly of non-porous sub-units. The three-dimensional connectivity between the cage windows is controlled by varying the chemical functionality such that either non-porous or permanently porous assemblies can be produced. Surface areas and gas uptakes for the latter exceed comparable molecular solids. One of the cages can be converted by recrystallization to produce either porous or non-porous polymorphs with apparent Brunauer-Emmett-Teller surface areas of 550 and 23 m(2) g(-1), respectively. These results suggest design principles for responsive porous organic solids and for the modular construction of extended materials from prefabricated molecular pores.
AB - Porous materials are important in a wide range of applications including molecular separations and catalysis. We demonstrate that covalently bonded organic cages can assemble into crystalline microporous materials. The porosity is prefabricated and intrinsic to the molecular cage structure, as opposed to being formed by non-covalent self-assembly of non-porous sub-units. The three-dimensional connectivity between the cage windows is controlled by varying the chemical functionality such that either non-porous or permanently porous assemblies can be produced. Surface areas and gas uptakes for the latter exceed comparable molecular solids. One of the cages can be converted by recrystallization to produce either porous or non-porous polymorphs with apparent Brunauer-Emmett-Teller surface areas of 550 and 23 m(2) g(-1), respectively. These results suggest design principles for responsive porous organic solids and for the modular construction of extended materials from prefabricated molecular pores.
KW - SORPTION PROPERTIES
KW - MOLECULAR RECOGNITION
KW - ONE-POT
KW - COORDINATION
KW - FRAMEWORKS
KW - DESIGN
KW - POLYMERS
KW - BETA-BIS(1,1,1-TRIFLUORO-5,5-DIMETHYL-5-METHOXYACETYLACETONATO)COPPER(II)
KW - ADSORPTION
KW - POLYHEDRA
UR - http://www.scopus.com/inward/record.url?scp=70549107963&partnerID=8YFLogxK
U2 - 10.1038/NMAT2545
DO - 10.1038/NMAT2545
M3 - Journal article
VL - 8
SP - 973
EP - 978
JO - Nature Materials
JF - Nature Materials
SN - 1476-1122
IS - 12
ER -