Hyperbranched polycarbosilane-g-β-cyclodextrin（β-CD）polymer brushes based on carbosilane core were synthesized.At first

hyperbranched polycarbosilanes（HBP）with carbosilane cores of 3 to 5 generations were prepared via hydrosilylation addition and pseudo-one-step using methyldiallylsilane as monomer（AB

2

）and 1

2-bis（diallyl（methyl）silyl）ethane as core（B

4

）

respectively.Then

HBP was modified by 1

1

3

3-tetrmethyldisiloxane

allyl alcohol and chloroacetyl chloride for obtaining hyperbranched polycarbosilanes carrying chloride atoms（HBP-Cl）.It may which act as a macroinitiator for further polymerization of a hyperbranched polymer with functional arms.For this purpose

HBP-g-poly（N

N-dimethylaminoethyl methacrylate）（PDMA）with different arm length was synthesized by atom transfer radical polymerization（ATRP）.Finally

HBP-g-PDMA-β-CD with functional polymer brushes was obtianed by immobilization of Mono-6-I-β-CD onto PDMA chains.Their macromolecular structures were characterized by FTIR

1H-NMR

13C-NMR and 29Si-NMR.In addtion

the macromolecular architecture of HBP-g-PDMA-β-CD

including the inner HBP structure with carbosilane core and the exterior PDMAEMA layer

was confirmed by SEC/MALLS and particle size analyses.Besides

it was found that the amount of β-CD content incorporating onto PDMA segments can also be regulated by changing reaction time.