If we add bulky substituents into the 'bay region' of the molecule, the steric hindrance will cause the molecule to twist away from the plane. These non-planar phenanthrenes have interesting ...

Moreover, the steric hindrance effects induced by the introduction of multiple carbazole donor groups effectively prevented the aggregation of MR acceptor units, allowing the molecule to maintain ...

These results are interesting from the point of view of steric hindrance. The equality of the action constants taken in conjunction with the facts given above shows that the lower rate of reaction ...