TY - JOUR
T1 - Star‐shaped Polymers through Simple Wavelength‐Selective Free‐Radical Photopolymerization
AU - Eibel, Anna
AU - Sattelkow, Jürgen
AU - Zalibera, Michal
AU - Wang, J.
AU - Müller, Gerdt
AU - Dietliker, Kurt
AU - Plank, Harald
AU - Grützmacher, Hansjörg
AU - Gescheidt-Demner, Georg
AU - Huber, Alex
PY - 2017
Y1 - 2017
N2 - Star-shaped polymers represent highly desired materials in nanotechnology and life sciences, including biomedical applications (e.g., diagnostic imaging, tissue engineering, and targeted drug delivery). Herein, we report a straightforward synthesis of wavelength-selective multifunctional photoinitiators (PIs) that contain a bisacylphosphane oxide (BAPO) group and an α-hydroxy ketone moiety within one molecule. By using three different wavelengths, these photoactive groups can be selectively addressed and activated, thereby allowing the synthesis of ABC-type miktoarm star polymers through a simple, highly selective, and robust free-radical polymerization method. The photochemistry of these new initiators and the feasibility of this concept were investigated in unprecedented detail by using various spectroscopic techniques.
AB - Star-shaped polymers represent highly desired materials in nanotechnology and life sciences, including biomedical applications (e.g., diagnostic imaging, tissue engineering, and targeted drug delivery). Herein, we report a straightforward synthesis of wavelength-selective multifunctional photoinitiators (PIs) that contain a bisacylphosphane oxide (BAPO) group and an α-hydroxy ketone moiety within one molecule. By using three different wavelengths, these photoactive groups can be selectively addressed and activated, thereby allowing the synthesis of ABC-type miktoarm star polymers through a simple, highly selective, and robust free-radical polymerization method. The photochemistry of these new initiators and the feasibility of this concept were investigated in unprecedented detail by using various spectroscopic techniques.
KW - atomic force microscopy
U2 - 10.1002/anie.201708274
DO - 10.1002/anie.201708274
M3 - Article
SN - 1433-7851
VL - 56
SP - 14306
EP - 14309
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
IS - 45
ER -