R.W. Gammon, E. Courtens, et al.
Physical Review B
(-)-Sparteine is a proven organocatalyst for the ringopening polymerization (ROP) of L-lactide, which affords polymers of controlled molecular weight and narrow polydispersity. The recent worldwide shortage of (-)-sparteine has necessitated the identification of simple and cost-effective replacement ROP catalysts. A series of commercially available molecules was first identified through molecular modeling and then subsequently investigated for polymerizing L-lactide. The modeling proved very useful at predicting spatial relationships and nitrogen geometries that greatly aided in the rapid identification of various alkyl amines as alternative organocatalysts. © 2011 American Chemical Society.
R.W. Gammon, E. Courtens, et al.
Physical Review B
Xikun Hu, Wenlin Liu, et al.
IEEE J-STARS
R.M. Macfarlane, R.L. Cone
Physical Review B - CMMP
R.D. Murphy, R.O. Watts
Journal of Low Temperature Physics