Porphyrin-embedded high molecular weight dendronized polymers up to fourth generation have been synthesized by Suzuki polycondensation of Fr6chet-type dendritic dibromo macromonomers and porphyrin diboronic pinacol ester. Higher generation lateral dendritic wedges not only endow the dendronized polymers with good solubility in commonly used organic solvents, but also prevent planar porphyrins and conjugated polymer backbones from aggregating by their "site isolation" effect. This type of porphyrin-embedded dendronized polymers can be used as saturated red light-emitting materials. With the increase of the generation of the lateral dendrons, the quantum yields of the dendronized polymers also gradually increased. (c) 2008 Wiley Periodicals, Inc.