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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Synthesis and Characterization of Lanthanide Amides Bearing Aminophenoxy Ligands and Their Catalytic Activity for the Polymerization of Lactides
TL;DR: A series of neutral lanthanide complexes supported by aminophenoxy ligands were synthesized, and their catalytic behavior in the polymerization of l-lactide and rac-Lactide was explored as mentioned in this paper.
Journal ArticleDOI
Bulk ring-opening polymerization (ROP) of L-lactide catalyzed by Ni(II) and Ni(II)-Sm(III) complexes based on a salen-type schiff-base ligand
Guoqi Xiao,Bing Yan,Rui Ma,Wen Juan Jin,Xing Qiang Lü,Li Qin Ding,Chu Zeng,Leilei Chen,Feng Bao +8 more
TL;DR: In this article, a monometallic and bimetallic complexes based on the Salen-type Schiff-base ligand H22L (H22L = N,N′-bis(3-methoxysalicylidene)ethylene-1,2-diamine) were synthesized and characterized by FT-IR, ESI-MS and X-ray crystallography.
Journal ArticleDOI
Synthesis and structures of complexes with axially chiral isoquinolinyl-naphtholate ligands
Ruth H. Howard,Carlos Alonso-Moreno,Lewis M. Broomfield,David L. Hughes,Joseph A. Wright,Manfred Bochmann +5 more
TL;DR: The synthesis of axially chiral ligands 1-(3',6'-di-t-butyl-2'-hydroxy-1'-naphthyl)-3-R-isoquinoline (R = H, Pr(i), Bu(t)) (LR-H) is described.
Journal ArticleDOI
Alkali metal complexes of tridentate amine-bis(phenolate) ligands and their rac-lactide ROP activity
TL;DR: In this article, three complexes were prepared using lithium, sodium and potassium reagents and an amine-(bis)phenol proligand, using 1H, 13C, and 7Li NMR (for the lithium complex), MALDI-TOF MS, elemental analysis and FT-IR.
Journal ArticleDOI
Synthesis of Isotactic-Heterotactic Stereoblock (Hard-Soft) Poly(lactide) with Tacticity Control through Immortal Coordination Polymerization
TL;DR: A one-pot method for the preparation of a new family of PLA materials is reported that combines heterotactic (soft) and isotactic stereoblocks (hard) and a star-shaped hard-soft stereoblock poly(lactide)s with various P(m) values and crystallinity were achieved in a single reactor for the first time.
References
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Journal ArticleDOI
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.
Journal ArticleDOI
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.