Triptycene-Based Organic Molecules of Intrinsic Microporosity

Four Organic Molecules
of Intrinsic Microporosity (OMIMs) were
prepared by fusing triptycene-based components to a biphenyl core.
Due to their rigid molecular structures that cannot pack space efficiently,
these OMIMs form amorphous materials with significant microporosity
as demonstrated by apparent BET surface areas in the range of 515–702
m2 g–1. Bulky cyclic 1′,2′,3′,4′-tetrahydro-1′,1′,4′,4′-tetra­methyl­benzo
units placed on the triptycene termini are especially efficient at
enhancing microporosity.