High mol. wt. dumbbell shaped polymers were prepd. by atom transfer radical polymn. (ATRP) to grow branches from repeat units of end blocks of a sym. triblock copolymer. The triblock copolymer itself was prepd. by polymer-polymer coupling of a com. obtained a,w-end functionalized polystyrene as central block with end-functionalized poly(chloromethylstyrene) that we synthesized by nitroxide-mediated polymn. Temp. gradient interaction chromatog. (TGIC) enabled the estn. of the terminal hydroxyl functionality of the high mol. wt. a,w-difunctional polystyrene as 75%. Size exclusion chromatog. (SEC) and 1H NMR enabled the detn. of mol. wts. and verification of the structures of the intermediate and the cleaved products. Size exclusion chromatog. coupled with light scattering (SEC-LS) and scanning force microscopy (SFM) were used to confirm that the desired dumbbell architecture was obtained.