A six-arm initiating core containing 1,3,5-triazine:N,N’,N″-tris-(4,6-dichloro——triazine-2-yl)-diethylenetriamine(3T-DETA)is synthesize from cyanuric chloride(TCT)and diethylenetriamine(DETA).The optimum reaction conditions include that n(TCT)∶n(DETA)=4∶1,N,N-diisopropylethylamine(DIPEA)is used as base,n(DIPEA)∶n(DETA)=4∶1,tetrahydrofuran as solvent,the flow rate of the THF solution of DETA and DIPEA is 0.67 mL/min,reacted at 0-5℃for 4 h and then at room temperature for 48 h,the product yield could reach to 95.3%.The structure of the target product is characterized by elementary analysis,MS,1H-NMR and FTIR.
Atom transfer radical polymerization （ATRP） of methyl methacrylate （MMA） was achieved, using N-chlorosuccinimide （NCS） as an initiator together with catalytic system CuCl/PMDETA （N,N,N＇,N＇,N＂-pentamethyldiethylenetriamine）, CuCl/MA5-DETA （N,N＇,N＇,N＂-penta（methylacrylate）diethylenetriamine）, and CuCl/bipy （bipy= 2,2＇-bipyridyl） respectively. The results indicated that the polymerization possessed typical controlled/living radical polymerization characteristics. The analysis for terminal group of obtained polymer by ^1H NMR proved that NCS is an initiator for ATRP. In comparison with NBS, the polymerization rate was slower and the resulted polymer had narrower molecular weight distribution （MWD） when NCS was employed as the initiator.
