Synthesis and Direct Visualization of Dumbbell-Shaped Molecular Brushes. Academic Article

abstract

• Dumbbell-shaped triblock molecular brushes were synthesized by ring-opening metathesis polymerization (ROMP) of poly(lactide) macromonomers with terminal norbornene groups (NB-PLA) in a sequential addition manner. By changing the macromonomer size and the feed ratio of Grubbs' catalyst to macromonomer, the dimensions of the "ball" and "bar" of the dumbbell-shaped molecular brushes were controlled. The growth and production of well-defined structures were verified by gel permeation chromatography (GPC), and the final dumbbell-shaped architectures were visualized by atomic force microscopy (AFM). This synthetic methodology represents a rapid and convenient route to unique macromolecular topologies.

authors

• Wooley, Karen

published proceedings

• ACS Macro Lett

author list (cited authors)

• Li, A., Li, Z., Zhang, S., Sun, G., Policarpio, D. M., & Wooley, K. L.

citation count

• 53

complete list of authors

• Li, Ang||Li, Zhou||Zhang, Shiyi||Sun, Guorong||Policarpio, Danielle M||Wooley, Karen L

publication date

• January 2012

publisher

• American Chemical Society (ACS)  Publisher

published in

• ACS Macro Letters  Journal

PubMed Central ID

• 35578488

Digital Object Identifier (DOI)

• 10.1021/mz200184f

start page

• 241

end page

• 245

volume

• 1

issue

• 1