Polymers of ε-Caprolactone Using New Copper(II) and Zinc(II) Complexes as Initiators: Synthesis, Characterization and X-Ray Crystal Structures

Five of six new Zn(II) and Cu(II) complexes were active in the ring-opening polymerization (ROP) of ε-caprolactone (CL) under solvent-free conditions, producing polycaprolactones (PCLs) of high crystallinity with molecular weights between 22,900 and 38,700 g mol(−1) and decomposition temperatures ab...

Descripción completa

Detalles Bibliográficos
Autores principales: Posada, Andrés F., Macías, Mario A., Movilla, Santiago, Miscione, Gian Pietro, Pérez, León D., Hurtado, John J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6401771/
https://www.ncbi.nlm.nih.gov/pubmed/30961164
http://dx.doi.org/10.3390/polym10111239
_version_ 1783400226334179328
author Posada, Andrés F.
Macías, Mario A.
Movilla, Santiago
Miscione, Gian Pietro
Pérez, León D.
Hurtado, John J.
author_facet Posada, Andrés F.
Macías, Mario A.
Movilla, Santiago
Miscione, Gian Pietro
Pérez, León D.
Hurtado, John J.
author_sort Posada, Andrés F.
collection PubMed
description Five of six new Zn(II) and Cu(II) complexes were active in the ring-opening polymerization (ROP) of ε-caprolactone (CL) under solvent-free conditions, producing polycaprolactones (PCLs) of high crystallinity with molecular weights between 22,900 and 38,700 g mol(−1) and decomposition temperatures above 260 °C. (1)H NMR analysis demonstrated that the PCLs obtained were mainly linear, having hydroxymethylene groups at the chain ends. The results obtained indicated a significant improvement in terms of the ratio of monomer:initiator compared to related Cu(II) and Zn(II) complexes. In addition, the structures of the complexes 1 and 4 were determined by single-crystal X-ray diffraction. The synthesis and full characterization of all complexes are described in this paper.
format Online
Article
Text
id pubmed-6401771
institution National Center for Biotechnology Information
language English
publishDate 2018
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-64017712019-04-02 Polymers of ε-Caprolactone Using New Copper(II) and Zinc(II) Complexes as Initiators: Synthesis, Characterization and X-Ray Crystal Structures Posada, Andrés F. Macías, Mario A. Movilla, Santiago Miscione, Gian Pietro Pérez, León D. Hurtado, John J. Polymers (Basel) Article Five of six new Zn(II) and Cu(II) complexes were active in the ring-opening polymerization (ROP) of ε-caprolactone (CL) under solvent-free conditions, producing polycaprolactones (PCLs) of high crystallinity with molecular weights between 22,900 and 38,700 g mol(−1) and decomposition temperatures above 260 °C. (1)H NMR analysis demonstrated that the PCLs obtained were mainly linear, having hydroxymethylene groups at the chain ends. The results obtained indicated a significant improvement in terms of the ratio of monomer:initiator compared to related Cu(II) and Zn(II) complexes. In addition, the structures of the complexes 1 and 4 were determined by single-crystal X-ray diffraction. The synthesis and full characterization of all complexes are described in this paper. MDPI 2018-11-08 /pmc/articles/PMC6401771/ /pubmed/30961164 http://dx.doi.org/10.3390/polym10111239 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Posada, Andrés F.
Macías, Mario A.
Movilla, Santiago
Miscione, Gian Pietro
Pérez, León D.
Hurtado, John J.
Polymers of ε-Caprolactone Using New Copper(II) and Zinc(II) Complexes as Initiators: Synthesis, Characterization and X-Ray Crystal Structures
title Polymers of ε-Caprolactone Using New Copper(II) and Zinc(II) Complexes as Initiators: Synthesis, Characterization and X-Ray Crystal Structures
title_full Polymers of ε-Caprolactone Using New Copper(II) and Zinc(II) Complexes as Initiators: Synthesis, Characterization and X-Ray Crystal Structures
title_fullStr Polymers of ε-Caprolactone Using New Copper(II) and Zinc(II) Complexes as Initiators: Synthesis, Characterization and X-Ray Crystal Structures
title_full_unstemmed Polymers of ε-Caprolactone Using New Copper(II) and Zinc(II) Complexes as Initiators: Synthesis, Characterization and X-Ray Crystal Structures
title_short Polymers of ε-Caprolactone Using New Copper(II) and Zinc(II) Complexes as Initiators: Synthesis, Characterization and X-Ray Crystal Structures
title_sort polymers of ε-caprolactone using new copper(ii) and zinc(ii) complexes as initiators: synthesis, characterization and x-ray crystal structures
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6401771/
https://www.ncbi.nlm.nih.gov/pubmed/30961164
http://dx.doi.org/10.3390/polym10111239
work_keys_str_mv AT posadaandresf polymersofecaprolactoneusingnewcopperiiandzinciicomplexesasinitiatorssynthesischaracterizationandxraycrystalstructures
AT maciasmarioa polymersofecaprolactoneusingnewcopperiiandzinciicomplexesasinitiatorssynthesischaracterizationandxraycrystalstructures
AT movillasantiago polymersofecaprolactoneusingnewcopperiiandzinciicomplexesasinitiatorssynthesischaracterizationandxraycrystalstructures
AT miscionegianpietro polymersofecaprolactoneusingnewcopperiiandzinciicomplexesasinitiatorssynthesischaracterizationandxraycrystalstructures
AT perezleond polymersofecaprolactoneusingnewcopperiiandzinciicomplexesasinitiatorssynthesischaracterizationandxraycrystalstructures
AT hurtadojohnj polymersofecaprolactoneusingnewcopperiiandzinciicomplexesasinitiatorssynthesischaracterizationandxraycrystalstructures

Ejemplares similares