TY - JOUR
T1 - Synthesis of dendronized diblock copolymers via click chemistry
T2 - The effect of dendronization on phase separation behavioura
AU - Fleischmann, Sven
AU - Kiriy, Anton
AU - Bocharova, Vera
AU - Tock, Christian
AU - Komber, Hartmut
AU - Voit, Brigitte
PY - 2009/9/1
Y1 - 2009/9/1
N2 - A novel route towards the synthesis of well-defined linear-dendronized diblock copolymers is reported. Precursor alkyne containing diblock copolymers were modified in a highly efficient cycloaddition reaction with dendritic azides of different generation. The dendronization has been shown to be selective and could be driven to completion under ambient conditions. The phase separation of such dendronized diblock copolymers was investigated in dependence of the generation size being attached. Compared to a linear-linear diblock copolymer as starting material the dendronization yielded in a pronounced phase separation. The nanoscaled features observed in thin films strongly depended on the dendron size and a variety of morphologies could be identified. Hence, the unique combination of controlled radical polymerization and click chemistry allows for the triggering of structured surfaces in the nanometer-regime.
AB - A novel route towards the synthesis of well-defined linear-dendronized diblock copolymers is reported. Precursor alkyne containing diblock copolymers were modified in a highly efficient cycloaddition reaction with dendritic azides of different generation. The dendronization has been shown to be selective and could be driven to completion under ambient conditions. The phase separation of such dendronized diblock copolymers was investigated in dependence of the generation size being attached. Compared to a linear-linear diblock copolymer as starting material the dendronization yielded in a pronounced phase separation. The nanoscaled features observed in thin films strongly depended on the dendron size and a variety of morphologies could be identified. Hence, the unique combination of controlled radical polymerization and click chemistry allows for the triggering of structured surfaces in the nanometer-regime.
KW - Click chemistry
KW - Controlled radical polymerisation
KW - Dendronized polymers
KW - Diblock copolymers
KW - Phase separation
UR - http://www.scopus.com/inward/record.url?scp=69549111125&partnerID=8YFLogxK
U2 - 10.1002/marc.200900272
DO - 10.1002/marc.200900272
M3 - Article
AN - SCOPUS:69549111125
SN - 1022-1336
VL - 30
SP - 1457
EP - 1462
JO - Macromolecular Rapid Communications
JF - Macromolecular Rapid Communications
IS - 17
ER -