TY - JOUR
T1 - Controlling surfaces and interfaces with functional polymers
T2 - Preparation and functionalization of dendritic-linear block copolymers via metal catalyzed "living" free radical polymerization
AU - Leduc, Marc R.
AU - Hayes, Wayne
AU - Frechet, Jean
PY - 1998/1/15
Y1 - 1998/1/15
N2 - The preparation and chemical modification of dendritic-linear block copolymers with surface functionalized dendritic components are presented. Isophthalate ester-functionalized dendrons featuring benzylic halide groups at their focal points have been used for the metal catalyzed "living" radical polymerization of styrene. The molecular weight of the dendritic-linear block copolymers determined by MALDITOF and Size Exclusion Chromatography was found to be accurately controlled up to molecular weights of ca. 30,000 a.m.u., with polydispersities less than 1.2. Subsequent functional group modifications of the peripheral ethyl ester groups of the dendritic block have been successfully carried out leading to carboxylic acids, butyl amides, benzyl alcohols, benzyl halides, and also accelerated generation growth via transesterification with a first generation dendritic alcohol. Several of these new dendritic-linear block copolymers exhibit interesting aggregation characteristics as evidenced by 1H-NMR spectroscopic studies.
AB - The preparation and chemical modification of dendritic-linear block copolymers with surface functionalized dendritic components are presented. Isophthalate ester-functionalized dendrons featuring benzylic halide groups at their focal points have been used for the metal catalyzed "living" radical polymerization of styrene. The molecular weight of the dendritic-linear block copolymers determined by MALDITOF and Size Exclusion Chromatography was found to be accurately controlled up to molecular weights of ca. 30,000 a.m.u., with polydispersities less than 1.2. Subsequent functional group modifications of the peripheral ethyl ester groups of the dendritic block have been successfully carried out leading to carboxylic acids, butyl amides, benzyl alcohols, benzyl halides, and also accelerated generation growth via transesterification with a first generation dendritic alcohol. Several of these new dendritic-linear block copolymers exhibit interesting aggregation characteristics as evidenced by 1H-NMR spectroscopic studies.
KW - Block copolymer
KW - Chemical modification
KW - Dendrimer
KW - Living free-radical polymerization
KW - Polystyrene
UR - http://www.scopus.com/inward/record.url?scp=0031675555&partnerID=8YFLogxK
U2 - 10.1002/(SICI)1099-0518(19980115)36:1<1::AID-POLA3>3.0.CO;2-Z
DO - 10.1002/(SICI)1099-0518(19980115)36:1<1::AID-POLA3>3.0.CO;2-Z
M3 - Article
AN - SCOPUS:0031675555
VL - 36
SP - 1
EP - 10
JO - Journal of Polymer Science, Part A: Polymer Chemistry
JF - Journal of Polymer Science, Part A: Polymer Chemistry
SN - 0887-624X
IS - 1
ER -