Stepwise transformation of the molecular building blocks in a porphyrin-encapsulating metal-organic material
KAUST DepartmentChemical Science Program
Physical Sciences and Engineering (PSE) Division
Advanced Membranes and Porous Materials Research Center
Functional Materials Design, Discovery and Development (FMD3)
Permanent link to this recordhttp://hdl.handle.net/10754/562727
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AbstractWhen immersed in solutions containing Cu(II) cations, the microporous metal-organic material P11 ([Cd4(BPT)4]·[Cd(C 44H36N8)(S)]·[S], BPT = biphenyl-3,4′,5-tricarboxylate) undergoes a transformation of its [Cd 2(COO)6]2- molecular building blocks (MBBs) into novel tetranuclear [Cu4X2(COO)6(S) 2] MBBs to form P11-Cu. The transformation occurs in single-crystal to single-crystal fashion, and its stepwise mechanism was studied by varying the Cd2+/Cu2+ ratio of the solution in which crystals of P11 were immersed. P11-16/1 (Cd in framework retained, Cd in encapsulated porphyrins exchanged) and other intermediate phases were thereby isolated and structurally characterized. P11-16/1 and P11-Cu retain the microporosity of P11, and the relatively larger MBBs in P11-Cu permit a 20% unit cell expansion and afford a higher surface area and a larger pore size. © 2013 American Chemical Society.
SponsorsThis work was supported by Award FIC/2010/06 from King Abdullah University of Science and Technology. The data for P11-Cu were collected at the Advanced Photon Source on beamline 15ID-C of ChemMatCARS Sector 15, which is principally supported by the National Science Foundation/Department of Energy under Grant NSF/CHE-0822838. The Advanced Photon Source is supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract DE-AC02-06CH11357.
PublisherAmerican Chemical Society (ACS)