Polymerization of racemic beta-butyrolactone using supported catalysts: a simple access to isotactic polymers.
Grafting of [Ln(BH(4))(3)(THF)(3)] (Ln = La, Nd) onto silica affords materials containing well-identified bis(borohydride) surface species. The neodymium-decorated silica converts the beta-butyrolactone monomer into highly isotactic poly(beta-hydroxybutyrate). Under similar conditions, the molecular precursor gives rise to an atactic polymer.
Ajellal
Noureddine
N
University of Minnesota, Minneapolis, MN 55455-0431, USA.
Durieux
Guillaume
G
Delevoye
Laurent
L
Tricot
Grégory
G
Dujardin
Christophe
C
Thomas
Christophe M
CM
Gauvin
Régis M
RM
D015107:4-Butyrolactone / Q000031:analogs & derivatives* / Q000737:chemistry; D001894:Borohydrides / Q000737:chemistry; D002384:Catalysis; D006885:Hydroxybutyrates / Q000138:chemical synthesis* / Q000737:chemistry; D028581:Lanthanoid Series Elements / Q000737:chemistry; D011091:Polyesters / Q000138:chemical synthesis* / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry; D013237:Stereoisomerism; D000094122:Polyhydroxybutyrates
D015107:4-Butyrolactone; D001894:Borohydrides; D006885:Hydroxybutyrates; D028581:Lanthanoid Series Elements; D011091:Polyesters; D012822:Silicon Dioxide; C003182:poly-beta-hydroxybutyrate; D000094122:Polyhydroxybutyrates; C013426:beta-butyrolactone