hatcher part 7

why are photoactive mofs good for photocatalysis?

solid - ease of separation from products

porous structures - large pores and possible guest diffusion allows reactants to be included inside the MOF sturcture, promoting efficient interaction with catalytic sites

high surface area - porous structures increases surface area - increased chance of reactants interacting with catalytic sites

versatile design space - enables tuning of optical properties for optimal absorptionand efficient catalytic activity

semi conductors - mobile charge carriers are required to facilitate redox processes necessary for catalysis

what functionalisation strats can be used to insert photo-initiated redox centers in mofs for photocatalysis?

inorganic cluster nodes - designed to be redox active semiconductors

linker ligands - include organic chromaphores or metal organic dyes

encapsulate catalytic guest molecules inside pores

what are COFs?

covalent organic frameworks

all organic crystalline structures that are formed of nodes and linkers

conatin only light atoms (H B C N O)

nodes and linkers are covalently bound

stronger bonding and robust 3D organic networks

what are some applications of cofs?

gas storage/separation, guest encapsulation/exchange, catalysis, drug delivery, photoswitches, optoelectronics

why are cofs better for drug delivery than mofs?

mofs can lead to toxic metals leaching into the body

what are hofs?

crystalline structures formed of molecular monomer units that are linked by hydrogen bonding interactions

the monomer units could be carboxylic acids, amides, imidazoles

can be constructed by identical and non-identical hydrogen bonding groups

what the negatives of binding force being weaker in hofs than in mofs or cofs?

hof solids are less stable

pore expansion is more difficult

activation of hofs is more challenging

what are the positives of the binding force being wesker for hofs than in mofs and cofs?

hofs are more soluble

highly crystalline cofs sre more readily formed

hofs are more processible - implications for device manufacture

what are the applications of hofs?

gas adsorption/storage/separation, chemical separations, optical applications, drug delivery