Abstract: The present invention relates to a microporous material which is a non-network polymer having a chain comprised of repeating units bonded to each other and each including a first generally planar species and a rigid linker, the linker having a point of contortion such that two adjacent first planar species connected by a rigid linker are held in a non-coplanar orientation, the rigid linker further being such that the polymer chain has a rigid contorted structure, and the polymer being such that said repeating units comprised of the first generally planar species and the rigid linker are bonded predominately to two other such repeating units.

Abstract: The present invention relates to a microporous material which is a non-network polymer having a chain comprised of repeating units bonded to each other and each including a first generally planar species and a rigid linker, the linker having a point of contortion such that two adjacent first planar species connected by a rigid linker are held in a non-coplanar orientation, the rigid linker further being such that the polymer chain has a rigid contorted structure, and the polymer being such that said repeating units comprised of the first generally planar species and the rigid linker are bonded predominately to two other such repeating units.

Abstract: A microporous material comprises organic macromolecules comprised of first generally planar species connected by rigid linkers having a point of contortion such that two adjacent first planar species connected by the linker are held in non-coplanar orientation, subject to the proviso that the first species are other than porphyrinic macrocycles. Materials in accordance with the invention have a surface area of at least 300 m2 g?1, eg in the range 700-1500 m2 g?1. Preferred points of contortion are spiro groups, bridged ring moieties and sterically congested single covalent bonds around which there is restricted rotation.

Abstract: A microporous material comprises organic macromolecules comprised of first generally planar species connected by rigid linkers having a point of contortion such that two adjacent first planar species connected by the linker are held in non-coplanar orientation, subject to the proviso that the first species are other than porphyrinic macrocycles. Materials in accordance with the invention have a surface area of at least 300 m2g?1, eg in the range 700-1500 m2g?1. Preferred points of contortion are spiro groups, bridged ring moieties and sterically congested single covalent bonds around which there is restricted rotation.