An intiator

dimethyl 4

6-bis(bwmomethyl) isophthalate

was synthesized by bromomethylation

oxidation．esterification and bromination reaction of 1

3-dimethylbenzene．The initiator was used to initiate the atom transfer radical polymerization of styrene successfully．The results showed that the process had good characteristics of controlled／living free radical polymerization．The molecular weight of the obtained polymer increases linearly with monorner conversion

molecular weight distribution is very narrow

and a linear relationship between In([M]o／[M]) and pelymerization time exists．A well-defined novel structural polystyrene containing two esters groups in the mid-main chain was propared with controlled molecular weight and narrow polydispersity．The structure of the polymer was confirmed by 1H—NMR spectra．After being hydrolyzed

a dicarboyx polystyrene was obtained and used to form ionic—bonded supramolecules with 1-dodecamine as a model of star-shaped supramolecules．The supramolecules formed was characterized by FTIR spectrum．