Article
Chemistry, Physical
Michael Lalanne-Tisne, Audrey Favrelle-Huret, Wim Thielemans, Joao P. Prates Ramalho, Philippe Zinck
Summary: Organocatalysts are important in polymerization reactions. This study used Density Functional Theory to investigate the ring-opening polymerization of trimethylene carbonate, revealing a dual mechanism and confirming TBD as a more efficient catalyst.
Article
Chemistry, Applied
Nicolas Zivic, Thomas Brossier, Floriane Crestey, Sylvain Catrouillet, Abraham Chemtob, Valerie Heroguez, Patrick Lacroix-Desmazes, Christine Joly-Duhamel, Sebastien Blanquer, Julien Pinaud
Summary: Patterned coatings based on biodegradable crosslinked poly(ester/carbonate) were prepared using photoinitiated ring-opening polymerization. The gel time was evaluated using photorheometry, and the formulation and experimental conditions were optimized for stereolithography to produce patterned coatings.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Polymer Science
Thomas Brossier, Gael Volpi, Vincent Lapinte, Sebastien Blanquer
Summary: The synthesis of semi-crystalline PTMC through ROP-amine shows promising results and compatibility with a variety of amines, offering a simple preparation method and the ability to monitor urethane bonds. The relationship between the nature of amines and the crystallinity of PTMC was discussed, along with the impact of crystallinity on the mechanical properties compared to amorphous PTMC.
Article
Polymer Science
Chengliang Wang, Xu Zhang, Wei Zhao, Xin Liu, Qingfu Wang, Jingjiang Sun
Summary: This study introduces a novel organo-catalyzed method for the synthesis of hyperbranched aliphatic polycarbonates (HBPCs). The method allows for precise control over the HBPC structure and the introduction of different functional groups. HBPCs have significant potential for biomedical applications.
Article
Chemistry, Multidisciplinary
Yening Xia, Georg M. Scheutz, Charles P. Easterling, Junpeng Zhao, Brent S. Sumerlin
Summary: This study introduces a method for synthesizing well-defined polyacrylamido-b-polyether block copolymers by combining photoiniferter polymerization and organocatalytic ring-opening polymerization. The compatibility between the two polymerization systems is demonstrated, allowing for the tailored synthesis of block copolymers from chemically distinct monomers.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Polymer Science
Miguel Palenzuela, Kamolchanok Sarisuta, Marta Navarro, Narumi Kumamoto, Nalinthip Chanthaset, Julien Monot, Hiroharu Ajiro, Blanca Martin-Vaca, Didier Bourissou
Summary: 5-Methylene-1,3-dioxane-2-one (exTMC), a cyclic carbonate with an exocyclic methylene group, can be copolymerized with trimethylene carbonate (TMC) using methane sulfonic acid (MSA) as a catalyst, resulting in copolymers with adjustable composition and high randomness. The reactivity ratios of exTMC and TMC were determined to be 0.93-0.95 and 1.04-1.07, respectively. Subsequent thiol-ene reaction on the exomethylene group allows for the preparation of aliphatic polycarbonates with randomly distributed COOH or OH groups along the polymer chains.
Article
Chemistry, Physical
Semira Bener, Gorkem Yilmaz, Yusuf Yagci
Summary: This study investigated the cationic ring opening polymerization of epsilon-caprolactone using directly and indirectly acting photoinitiating systems. It was found that the polymerization proceeds in a controlled manner through an activated monomer mechanism. The applicability of photoinitiation to other lactone monomers was also validated.
Article
Polymer Science
Jie Zhang, Liguo Xu, Wenhao Xiao, Yang Chen, Zhixian Dong, Jinbao Xu, Caihong Lei
Summary: With the increasing focus on health and environmental issues, green chemistry and atomic economy have become important topics for researchers and manufacturers. In this study, squaric acid was used as an organocatalyst to successfully synthesize polyesters with desired molecular weights and narrow dispersity.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Guojun Hu, Yanwei Wang, Yaorong Wang, Xuehua Zhu, Dan Yuan, Yingming Yao
Summary: Two amino-bridged bis(phenolate) neodymium complexes were synthesized and used as efficient initiators for the copolymerization of TMC and L-LA under mild conditions, resulting in the formation of random copolymers. NMR monitoring experiments confirmed the generation of a TMC/LA random copolymer through random copolymerization.
CHEMICAL COMMUNICATIONS
(2023)
Article
Biochemistry & Molecular Biology
Ahmed Abd El-Fattah, Elizabeth Grillo Fernandes, Federica Chiellini, Emo Chiellini
Summary: Amphiphilic copolymers with interesting architecture and tunable properties are promising materials for biomedical applications. Enzymatic catalysis provides a suitable alternative for the preparation of these materials without the use of toxic catalysts. The structure-property relationship of copolymers was studied by varying the molecular weight of Pluronic (EPE) and the molar ratios between ε-caprolactone monomer and EPE macro-initiator (M/In). The obtained copolymers were chemically characterized and their morphologies evaluated. The results showed a correlation between the differential scanning calorimetry data and X-ray diffraction data, suggesting the importance of the central block length in crystal formation. Preliminary cytotoxicity experiments confirmed the non-toxic nature of the copolymers.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Materials Science, Multidisciplinary
Nikola Toshikj, Jean-Jacques Robin, Michel Ramonda, Sylvain Catrouillet, Sebastien Blanquer
Summary: Efficient and rapid organocatalyzed ring-opening polymerization was used to synthesize PTMC-b-PCL-b-PTMC block copolymers, with controlled architectures achieved through an additional cross-linking step. The crystalline-driven phase-separated morphology predominated, and the cross-linked thin films exhibited shape-memory properties, while remaining stable with access to thermodynamic phase-separated morphologies below the poly(epsilon-caprolactone) melting point.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Polymer Science
Shuang Li, Han Lu, Ling Zhu, Meixue Yan, Xiaohui Kang, Yi Luo
Summary: The mechanisms of ring-opening polymerization of L-lactide and trimethylene carbonate using DMAP/Sac as a bifunctional catalyst were investigated using DFT calculations. A new two-component organocatalyst Adenine/Sac was also designed and evaluated for its catalytic performance. The results showed that Adenine/Sac exhibited higher catalytic activity in the ring-opening of L-lactide and trimethylene carbonate.
Article
Polymer Science
Chun-Juei Chang, Wei Lee, Yu-Chi Liou, Yu-Lun Chang, Yi-Chun Lai, Shangwu Ding, Hsuan-Ying Chen, Hsing-Yin Chen, Yung-Chi Chang
Summary: The study demonstrated that dinuclear aluminum complexes exhibited higher catalytic activity than mononuclear aluminum complexes, particularly those with 1,3-substituted phenyl ligands. One Al atom in the dinuclear Al system acted as an electron-withdrawing group, influencing the other Al atom through associated aromatic ligands, thereby enhancing catalytic activity for the ROP of CL.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Huan Qiu, Ting Shen, Zhening Yang, Feng Wu, Xiaohong Li, Yingfeng Tu, Jun Ling
Summary: Janus polymerization was utilized to synthesize multiblock copolymers with self-assembly capabilities, good shape memory properties, and potential applications in biomedical devices. The distinguishable chemical structures and thermal properties between Janus MBCPs and cationic random copolymers were confirmed, providing insights into the unique features of Janus polymerization for advanced material design and applications.
CHINESE JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Xun Zhang, Pan Sun, Yu Jiang, Saihu Liao
Summary: In this study, an efficient metal-free organic catalytic system using PADIs as catalysts has been developed for the ring-opening polymerization of ε-caprolactone. The system allows for the synthesis of poly(ε-caprolactone) with predictable molecular weight and narrow dispersity under mild conditions.
CHEMISTRY-AN ASIAN JOURNAL
(2023)
Article
Chemistry, Physical
Amelie Noel, Deborah Mirbel, Eric Cloutet, Guillaume Fleury, Christophe Schatz, Christophe Navarro, Georges Hadziioannou, CyrilBrochon
APPLIED SURFACE SCIENCE
(2018)
Article
Polymer Science
Franck Kayser, Guillaume Fleury, Somprasong Thongkham, Christophe Navarro, Blanca Martin-Vaca, Didier Bourissou
Article
Chemistry, Multidisciplinary
Florian Delachat, Ahmed Gharbi, Patricia Pimenta-Barros, Antoine Fouquet, Guillaume Claveau, Nicolas Posseme, Laurent Pain, Celia Nicolet, Christophe Navarro, Ian Cayrefourcq, Raluca Tiron
Article
Engineering, Electrical & Electronic
Maria Gabriela Gusmao Cacho, Patricia Pimenta-Barros, Maxime Argoud, Christophe Navarro, Kaumba Sakavuyi, Raluca Tiron, Nicolas Posseme
MICROELECTRONIC ENGINEERING
(2020)
Article
Engineering, Electrical & Electronic
Maria Gabriela Gusmao Cacho, Khatia Benotmane, Patricia Pimenta-Barros, Charlotte Bouet, Guido Rademaker, Maxime Argoud, Christophe Navarro, Raluca Tiron, Nicolas Posseme
Summary: This article discusses the application of directed self-assembly (DSA) of block copolymers in obtaining small and dense patterns for future technological nodes. It introduces the concept of high chi BCPs and explores the trade-off between gas ratios for achieving high selectivity and avoiding pattern collapse.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
(2021)
Article
Polymer Science
Franck Kayser, Guillaume Fleury, Somprasong Thongkham, Christophe Navarro, Blanca Martin-Vaca, Didier Bourissou
Summary: Various substituted delta/epsilon-lactones have been copolymerized with epsilon-caprolactone (epsilon-CL) to inhibit the crystallization of polycaprolactone (PCL). The best results were obtained with the 4-phenyl-epsilon-caprolactone (4-Ph-epsilon-CL) co-monomer. The 4-Ph substituent effectively prevents PCL crystallization by impeding chain folding and alignment, with minimal impact on the polymerization rate. The use of telechelic dihydroxyl-terminated (hydrogenated) polybutadiene macroinitiators leads to well-defined triblock copolymers.
Proceedings Paper
Materials Science, Multidisciplinary
Aurelie Le Pennec, Jerome Reche, Patrick Quemere, Guido Rademaker, Romain Jarnias, Charlotte Bouet, Celia Nicolet, Christophe Navarro, Maxime Argoud, Raluca Tiron
ADVANCES IN PATTERNING MATERIALS AND PROCESSES XXXVII
(2020)
Proceedings Paper
Materials Science, Multidisciplinary
G. J. Rademaker, A. Le Pennec, T. J. Giammaria, K. Benotmane, H. Pham, C. Bouet, M. G. Gusmao Cacho, M. Argoud, M-L Pourteau, A. Paquet, A. Gharbi, C. Navarro, C. Nicolet, X. Chevalier, K. Sakavuyi, P. Nealey, R. Tiron
ADVANCES IN PATTERNING MATERIALS AND PROCESSES XXXVII
(2020)
Proceedings Paper
Engineering, Electrical & Electronic
F. Delachat, H. Teyssedre, L. Pain, X. Chevalier, Celia Nicolet, Christophe Navarro
NOVEL PATTERNING TECHNOLOGIES FOR SEMICONDUCTORS, MEMS/NEMS, AND MOEMS 2019
(2019)
Proceedings Paper
Engineering, Electrical & Electronic
A. Paquet, A. Le Pennec, A. Gharbi, T. J. Giammaria, G. Rademaker, M-L. Pourteau, D. Mariolle, C. Navarro, C. Nicolet, X. Chevalier, K. Sakavuyi, L. Pain, P. Nealey, R. Tiron
NOVEL PATTERNING TECHNOLOGIES FOR SEMICONDUCTORS, MEMS/NEMS, AND MOEMS 2019
(2019)
Proceedings Paper
Optics
P. Pimenta-Barros, G. Claveau, M. Argoud, Z. Chalupa, N. Allouti, C. Comboroure, G. Chamiot Maitral, N. Posseme, L. Pain, R. Tiron, C. Navarro, C. Nicolet, I. Cayrefourcq
NOVEL PATTERNING TECHNOLOGIES 2018
(2018)
Proceedings Paper
Materials Science, Multidisciplinary
F. Delachat, J-C. Phillipe, V. Larrey, F. Fournel, S. Bos, H. Teyssedre, Xavier Chevalier, Celia Nicolet, Christophe Navarro, Ian Cayrefourcq
ADVANCES IN PATTERNING MATERIALS AND PROCESSES XXXV
(2018)
Proceedings Paper
Materials Science, Multidisciplinary
A. Gharbi, P. Pimenta-Barros, O. Saouaf, G. Reynaud, L. Pain, R. Tiron, C. Navarro, C. Nicolet, I. Cayrefourcq, M. Perego, F. Perez-Murano, E. Amat, M. Fernandez-Regulez
ADVANCES IN PATTERNING MATERIALS AND PROCESSES XXXV
(2018)
Proceedings Paper
Optics
P. Bezard, X. Chevalier, A. Legrain, C. Navarro, C. Nicolet, G. Fleury, I. Cayrefourcq, R. Tiron, M. Zelsmann
ADVANCED ETCH TECHNOLOGY FOR NANOPATTERNING VII
(2018)
Article
Nanoscience & Nanotechnology
Antoine Legrain, Guillaume Fleury, Muhammad Mumtaz, Christophe Navarro, Javier Arias-Zapata, Xavier Chevalier, Ian Cayrefourcq, Marc Zelsmann
ACS APPLIED MATERIALS & INTERFACES
(2017)