Tuning of the flexibility in metal-organic frameworks based on pendant arm macrocycles

An isostructural series of flexible metal-organic frameworks based on macrocycles having diverse pendant arms was developed to tune flexibility depending on functional groups. The pendant arms directing into the pores were found to play a key role in imparting different gate-opening behaviours in the threshold pressure and sorption capacity upon interaction with guest molecules. An isostructural series of flexible MOFs based on pendant arm macrocycles was developed to tune flexibility depending on functional groups.