Journal ArticleDOI
Controlled ring-opening polymerization of lactide and glycolide.
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TLDR
This work focuses on the characterization of the phytochemical components of Lactide ROP and their role in the regulation of cell reprograming.Abstract:
23 Stereocontrol of Lactide ROP 6164 231 Isotactic Polylactides 6164 232 Syndiotactic Polylactides 6166 233 Heterotactic Polylactides 6166 3 Anionic Polymerization 6166 4 Nucleophilic Polymerization 6168 41 Mechanistic Considerations 6168 42 Catalysts 6169 421 Enzymes 6169 422 Organocatalysts 6169 43 Stereocontrol of Lactide ROP 6170 44 Depolymerization 6170 5 Cationic Polymerization 6170 6 Conclusion and Perspectives 6171 7 Acknowledgments 6173 8 References and Notes 6173read more
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Different mechanisms at different temperatures for the ring-opening polymerization of lactide catalyzed by binuclear magnesium and zinc alkoxides.
TL;DR: Two binuclear magnesium and zinc alkoxides supported by a bis-salalen type dinucleating heptadentate Schiff base ligand were synthesized and fully characterized, affording polymers with narrow polydispersities and desirable molecular weights.
Journal ArticleDOI
Strategies for the synthesis of block copolymers with biodegradable polyester segments
TL;DR: A review of block copolymers can be found in this paper, where the authors describe recent advances in the synthesis of diblock and multiblock polyesters, as well as polyether and polycarbonate blocks bearing biodegradable polyester block segments.
Journal ArticleDOI
Magnesium Complexes Containing η1- and η3-Pyrrolyl or Ketiminato Ligands: Synthesis, Structural Investigation and ϵ-Caprolactone Ring-Opening Polymerisation
TL;DR: A series of dimeric magnesium derivatives containing substituted pyrrolyl or ketiminato ligands was synthesized and the application of these derivatives for the ring opening polymerisation of ϵ-caprolactone has been carried out as discussed by the authors.
Journal ArticleDOI
Bis(oxazolinyl)phenylborane: A Lewis acid-containing ligand for methide abstraction-based coordination to aluminum(III)
TL;DR: A compound that contains a Lewis acidic boron center and coordinating oxazoline groups and a planar six-membered chelate ring was prepared and spectroscopically characterized, suggesting the possibility of using these oxazolinylboratoaluminum compounds in catalytic reactions, as is demonstrated by lactide ring-opening polymerization.
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Homopiperazine and piperazine complexes of Zr(IV) and Hf(IV) and their application to the ring-opening polymerisation of lactide
TL;DR: In this paper, the authors describe the preparation and characterisation of twelve ZrIV/HfIV complexes based on piperazine or homopiperazine salan ligands.
References
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N-heterocyclic carbenes: a new concept in organometallic catalysis.
TL;DR: N-Heterocyclic carbenes have become universal ligands in organometallic and inorganic coordination chemistry as mentioned in this paper, and they not only bind to any transition metal, be it in low or high oxidation states, but also to main group elements such as beryllium, sulfur, and iodine.
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Biodegradable nanoparticles for drug and gene delivery to cells and tissue
Jayanth Panyam,Vinod Labhasetwar +1 more
TL;DR: Based on the above mechanism, various potential applications of nanoparticles for delivery of therapeutic agents to the cells and tissue are discussed.
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Polylactic Acid Technology
TL;DR: Polylactic acid is proving to be a viable alternative to petrochemical-based plastics for many applications It is produced from renewable resources and is biodegradable, decomposing to give H2O, CO2, and humus, the black material in soil as mentioned in this paper.
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Polymeric Systems for Controlled Drug Release
TL;DR: Kevin Shakesheff investigates new methods of engineering polymer surfaces and the application of these engineered materials in drug delivery and tissue engineering.
Journal ArticleDOI
Synthetic biodegradable polymers as orthopedic devices.
John Middleton,Arthur J. Tipton +1 more
TL;DR: In this paper, the authors focus on properties of biodegradable polymers which make them ideally suited for orthopedic applications where a permanent implant is not desired, and an overview of biocompatibility and approved devices of particular interest in orthopedics are also covered.