Hole-transporting periodic mesostructured organosilica.

Hole-transporting framework is formed by surfactant-templated sol-gel polycondensation of an electroactive phenylenevinylene-based organosilane precursor. Molecular geometry of the three-armed precursor contributes to both formation of periodic mesostructures and introduction of hole conductivity in the organosilica hybrids. Electroactive organosilicas with mesopores and large surface areas have great potentials for novel photovoltaic and photocatalytic systems.

Light harvesting by a periodic mesoporous organosilica chromophore.

Light aqueduct: Periodic mesoporous organosilica exhibits strong light absorption due to densely packed organic chromophores within the pore walls. Light energy absorbed by 125 biphenyl groups in the pore walls is funneled into a single coumarin 1 molecule in the mesochannels with almost 100% quantum efficiency, and results in significant enhancement of emission from the coumarin 1 dye.