Loading...
Please wait, while we are loading the content...
Similar Documents
Hemi-salen aluminum catalysts bearing N, N, O-tridentate type binaphthyl-Schiff-base ligands for the living ring-opening polymerisation of lactide
| Content Provider | Semantic Scholar |
|---|---|
| Author | Li, Xiang Duan, Ranlong Duan, Qian Li, Yanhui Pang, Xuan Zhuang, Hejing Chen, Xuesi |
| Copyright Year | 2015 |
| Abstract | Four hemi-salen aluminum complexes based on tridentate N, N, O-type binaphthyl-Schiff-base derivatives (1: R = iPr; R1 = H; 2: R = iPr; R1 = Cl; 3: R = 2-adamantyl; R1 = H; 4: R = 2-adamantyl; R1 = tBu) were prepared. These complexes were characterized by 1H, 13C NMR spectroscopy and elemental analysis, these four complexes were employed for ring-opening polymerisation of L-lactide and rac-lactide. Complex 2, which was based on pro-ligand L2 with smaller steric hindrance and electron-withdrawing substituents, displayed the highest activity for ROP of L-lactide among these complexes, and complex 4, which was supported by pro-ligand L4 with the biggest steric hindrance, showed the highest stereoselectivity for the ROP of rac-lactide with partially isotactic polylactide with a Pm of 0.65. Kinetic studies revealed the ROP of L-lactide initiated by complex 3 had first-order dependency on [LA] as well as [Al]. |
| Starting Page | 29412 |
| Ending Page | 29419 |
| Page Count | 8 |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/C5RA00956A |
| Volume Number | 5 |
| Alternate Webpage(s) | https://pubs.rsc.org/en/content/getauthorversionpdf/C5RA00956A |
| Alternate Webpage(s) | http://www.rsc.org/suppdata/c5/ra/c5ra00956a/c5ra00956a1.pdf |
| Alternate Webpage(s) | https://doi.org/10.1039/C5RA00956A |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
