Publications by authors named "Joji Kadota"
Article Synopsis
- High molecular weight polyesters were synthesized using a method called acyclic diene metathesis (ADMET) polymerization, utilizing bis(undec-10-enoate) in combination with isosorbide, isomannide, and 1,3-propanediol, along with a molybdenum-alkylidene catalyst.
- The resulting polymers exhibited high molecular weights (ranging from 44,400 to 49,400 g/mol) and showed no major variations in properties after hydrogenation.
- The hydrogenated polymers demonstrated impressive tensile strength and elongation at break, particularly a polymer with a molecular weight of 48,200 g/mol, which outperformed conventional plastics in mechanical properties.
The mechanism of the ring-opening polymerization (ROP) of lactide catalyzed by two partner hydrogen-bonding organocatalysts was explored. New amidoindoles 4 a,c, thioamidoindoles 4 b,d, amidobenzimidazoles 5 a,c, and thioamidobenzimidazoles 5 b,c were synthesized and used as activators of the monomer. In the solid state and in solution, compounds 4 and 5 showed a propensity for self-association, which was evaluated.
View Article and Find Full Text PDFN-(3,5-Bis(trifluoromethyl)phenyl)-1H-indole-2-carboxamide 1e is an efficient hydrogen-bonding organocatalyst for the ring-opening polymerization of l-lactide. This new catalytic species does control the dispersity (1.08) and molecular weight (3460 g/mol vs 3064 in theory) of the poly(l-lactides) prepared in 2 h.
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