AFPM-EXAM-2-into-to-MOFS

Who Pioneered MOFs

Omar Yaghi

What Does MOF stand for

metal-organic framework

Define a MOF

crystalline compound consisting of metal ions or clusters coordinated to often ridged organic molecules to form 1, 2, or 3 d structures that can be porous

What are hybrid frameworks

another name for MOFs

what are coordination polymers

another name for MOFs

What is MOF-5 made of

ZnO4 tetrahedra joined by benzene dicarboxylate linkers

What is the Structure of MOF-5

extended 3D cubic framework with interconnected pores of 8 A aperture width and 12 A pore diameter

What is the topology of MOF-5

cubic net

Are MOFS or zeolites more flexible

MOFs

Are MOFs or zeolites more chemically diverse

MOFs

Are you able to synthesize MOFs or zeolites at room temp

MOFs

Do you need to calcine MOFs to remove the template

No

Do MOFs are zeolites have a broader range of textual properties (pore size, surface area,
pore volume)

MOFs

Do MOFs are zeolites have higher surface area

MOFs

What does ZIFs stand for

Zeolite Imidazolate Frameworks

How do ZIFs compare to zeolites (SiO4, AlO4)

Transition metal atoms (Zn, Co) replace T atoms and imidazolates replace bridging oxygen atoms

What is the aperture size and pore size of ZIF-8

aperture size: 0.34 nm
pore size: 1.16 nm

What are some examples of CoN4 ZIFs aperture and pore size

Aperture size: 0.34 nm, pore size: 1.04 nm
Aperture size: 0.34 nm, pore size: 1.16 nm

What is an example of ZnN4 ZIF aperture and pore size

Aperture size: 0.29 nm, pore size: 0.36 nm

What are the important properties of ZIFS

high surface area (100-4500 m^2/g)
thermal/chemical stability
microporous crystalline structures (functionality)
polar walls (uncoordinated N atoms)

What does BioMOFs stand for

Bio-metal-organic frameworks

What is the relationship between MOFs and BioMOFS

BioMOFS are MOFS with metal ions coordinate with at least one biomolecule
serving as organic linker forming a crystalline porous framework

What type of biomolecules make up BioMOFs

aminoacids,
peptides,
proteins,
saccharides,
and nucleobases

What is BioMOF-1 made of

Cages consist of 8 Zn2+ cations with 4 adeninate liners
columns composed of octahedral cages
columns interconnected with biphenyldicarboxylate linkers

What is the structure of BioMOF-1

tetragonal lattice crystal system
pore size ~(5.2 A)

What is BioMOF-11 made of

two Co2+ bridged via two adeninate and two acetate groups
cobalt-adeninate-acetate clusters

What is the structure of BioMOF-11

paddle wheel clusters
Aperture: 5.2 A pore size: 5.8 A

What are some properties of BioMOF-11

High CO2 uptake
multidentate
stable (decomp temp ~200 C)

What is the timeline of most common synthetic route of MOFs from oldest to newest

solvothermal
electrochemistry
hydrothermal
microwave/mechanochemistry
sonochemical/template
isothermal
spray dryer/sol gel
supercritical
flow chemistry

What makes MOFs attractive for gas storgae

their huge surface areas

What can MOFs be used for

gas storage
gas separation
acid-base catalysis
catalysis