The DOI matches its Crossref record; 7 of the 7 references it cites were found in a registry or an index.
Study of ligand substituent effects on the rate and stereoselectivity of lactide polymerization using aluminum salen-type initiators
Open accessAbstract
A series of aluminum salen-type complexes [where salen is N , N ′-bis(salicylaldimine)-1,2-ethylenediamine] bearing ligands that differ in their steric and electronic properties have been synthesized and investigated for the polymerization of rac -lactide. X-ray crystal structures on key precatalysts reveal metal coordination geometries intermediate between trigonal bipyramidal and square-based pyramidal. Both the phenoxy substituents and the backbone linker have a significant influence over the polymerization. Electron-withdrawing groups attached to the phenoxy donor generally gave an increased polymerization rate, whereas large ortho substituents generally slowed down the polymerization. The vast majority of the initiators afforded polylactide with an isotactic bias; only one exhibited a bias toward heteroselectivity. Isoselectivity generally increases with increased flexibility of the backbone linker, which is presumed to be better able to accommodate any potential steric clashes between the propagating polymer chain, the inserting monomer unit, and the substituents on the phenoxy donor.
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Cites
Polymeric systems for controlled drug release
Uhrich, K. E., Cannizzaro, S. M., Langer, R. S., & Shakesheff, K. M. (1999) · Chemical Reviews · doi:10.1021/cr940351u · Cited by 2,633
Controlled Ring-Opening Polymerization of Lactide and Glycolide
Dechy-Cabaret, O., Martin-Vaca, B., & Bourissou, D. (2004) · Chemical Reviews · doi:10.1021/cr040002s · Cited by 2,257
Polymerization of lactide and related cyclic esters by discrete metal complexes
O'Keefe, B. J., Hillmyer, M. A., & Tolman, W. B. (2001) · Journal of the Chemical Society, Dalton Transactions · doi:10.1039/b104197p · Cited by 825
Ovitt, T. M., & Coates, G. W. (2002) · Journal of the American Chemical Society · doi:10.1021/ja012052+ · Cited by 713
Ovitt, T. M., & Coates, G. W. (1999) · Journal of the American Chemical Society · doi:10.1021/ja990088k · Cited by 502
Radano, C. P., Baker, G. L., & Smith, M. R. (2000) · Journal of the American Chemical Society · doi:10.1021/ja9930519 · Cited by 403
Marshall, E. L., Gibson, V. C., & Rzepa, H. S. (2005) · Journal of the American Chemical Society · doi:10.1021/ja043819b · Cited by 209
Self-citation
Cited by
Biocompatible Initiators for Lactide Polymerization
Platel, R., Hodgson, L., & Williams, C. (2008) · Polymer Reviews · doi:10.1080/15583720701834166 · Cited by 706
Guillaume, S. M., Kirillov, E., Sarazin, Y., & Carpentier, J. (2015) · Chemistry – A European Journal · doi:10.1002/chem.201500613 · Cited by 251
Bakewell, C., Cao, T.-P.-A., Long, N., Le Goff, X. F., Auffrant, A., & Williams, C. K. (2012) · Journal of the American Chemical Society · doi:10.1021/ja310003v · Cited by 226
Random Copolymerization of ε-Caprolactone with Lactide Using a Homosalen−Al Complex
Nomura, N., Akita, A., Ishii, R., & Mizuno, M. (2010) · Journal of the American Chemical Society · doi:10.1021/ja9089395 · Cited by 222
Bouyahyi, M., Ajellal, N., Kirillov, E., Thomas, C. M., & Carpentier, J. (2011) · Chemistry – A European Journal · doi:10.1002/chem.201002779 · Cited by 217
Metadata
- Authors
- Hormnirun, P., Marshall, E. L., Gibson, V. C., Pugh, R. I., & White, A. J. P.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 2006-10-17
- Volume
- 103
- Issue
- 42
- Pages
- 15343-15348
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W2072618551
- Cited by
- 266
- References
- 7
- FWCI
- 3.14
- Type
- journal article
- Language
- en
- Open access
- green
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- Hormnirun, P., Marshall, E. L., Gibson, V. C., Pugh, R. I., & White, A. J. P. (2006). Study of ligand substituent effects on the rate and stereoselectivity of lactide polymerization using aluminum salen-type initiators. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0602765103
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