Health & Environmental Research Online (HERO)


Print Feedback Export to File
949804 
Journal Article 
Reverse ATRP of 4-vinylpyridine with Diethyl 2,3-Dicyano-2,3-Diphenylsuccinate/CuCl2/5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazamacrocyclotetradecane 
Chen, H; Liang, Y; Meng, Y; Yang, L; Chen, L; Chen, L; Niu, Y 
2009 
1 
Materials Science and Engineering C: Materials for Biological Applications
ISSN: 0928-4931
EISSN: 1873-0191 
ELSEVIER SCIENCE BV 
AMSTERDAM 
29 
5 
1604-1608 
WOS:000267025900017 
Diethyl 2,3-dicyano-2,3-diphenyisuccinate (DCDPS) was applied to initiate reverse atom transfer radical polymerization of 4-vinylpyridine (VP) in 2-propanol with CuCl2 and 5,5,7,12,12,14-hexamethyl-1.4.8,11-tetraazamacrocyclotetradecane (Me-6[14]aneN(4)) as catalyst and ligand for the first time. First-order kinetics of the polymerization rate with respect to the monomer concentration, linear increase of the molecular weight with monomer conversion and a polydispersity index in the range of 1.15-1.28 were indicatives of controlled radical polymerization. Use of Me-6[14]aneN(4) as the ligand had many advantages over the use of hexamethyl tris[2-(dimethylamino)ethyl]amine (Me-6-TREN) and 2,2'-bipyridine (bpy). A slower polymerization rate and a broad polydispersity index were observed using CuBr2 instead of CuCl2 as catalyst. The block copolymer PVP-b-PAN was obtained via a conventional ATRP process in N, N-dimethylformamide (DMF) using the resulting poly (4-vinylpyridine) as macroinitiator. (C) 2008 Elsevier B.V. All rights reserved. 
Reverse atom transfer radical polymerization; Block copolymers; Living polymerization; 4-Vinylpyridine