Metal-organic framework materials with ultrahigh surface areas: is the sky the limit?
We have synthesized, characterized, and computationally simulated/validated the behavior of two new metal-organic framework (MOF) materials displaying the highest experimental Brunauer-Emmett-Teller (BET) surface areas of any porous materials reported to date (~7000 m(2)/g). Key to evacuating the initially solvent-filled materials without pore collapse, and thereby accessing the ultrahigh areas, is the use of a supercritical CO(2) activation technique. Additionally, we demonstrate computationally that by shifting from phenyl groups to "space efficient" acetylene moieties as linker expansion units, the hypothetical maximum surface area for a MOF material is substantially greater than previously envisioned (~14600 m(2)/g (or greater) versus ~10500 m(2)/g).
Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, USA. o-farha@northwestern.edu
Omar K
OK
Farha
Ibrahim
I
Eryazici
Nak Cheon
NC
Jeong
Brad G
BG
Hauser
Christopher E
CE
Wilmer
Amy A
AA
Sarjeant
Randall Q
RQ
Snurr
SonBinh T
ST
Nguyen
A Özgür
AÖ
Yazaydın
Joseph T
JT
Hupp
D018360:Crystallography, X-Ray; D008958:Models, Molecular; D056004:Molecular Dynamics Simulation; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D016062:Porosity; D013499:Surface Properties
D009942:Organometallic Compounds