Mesoporous Organosilica Hybrids Consisting of Silica‐Wrapped π–π Stacking Columns

A new class of periodic mesoporous organosilica (PMO) materials with a columnar π-stacking arrangement of the framework organic groups has been prepared from disklike precursors with hydrophobic perylene bisimide (PBI) cores (see picture). The PBI-bridged PMOs exhibit exciton coupling and efficient formation of mobile radical spins by electron doping within the pore walls.