1
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Li X, Zhao W, Jin Y, Huang J, Chen D. Phase Behaviors and Photoresponsive Thin Films of Syndiotactic Side-Chain Liquid Crystalline Polymers with High Densely Substituted Azobenzene Mesogens. Chemphyschem 2024; 25:e202400421. [PMID: 38825850 DOI: 10.1002/cphc.202400421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 05/30/2024] [Accepted: 05/31/2024] [Indexed: 06/04/2024]
Abstract
Azobenzene-containing polymers (azopolymers) are a kind of fascinating stimuli-responsive materials with broad and versatile applications. In this work, a series of syndiotactic C1 type azopolymers of Pm-Azo-Cn with side-chain azobenzene mesogens of varied length alkoxy tails (n=1, 4, 8, 10) and different length alkyl spacers (m=6, 10) have been prepared via Rh-catalyzed carbene polymerization. The thermal properties and ordered assembly structures of thus synthesized side chain liquid crystalline polymers (SCLCPs) have been systematically investigated with differential scanning calorimetry (DSC), polarized optical microscopy (POM) and variable-temperature small/wide-angle X-ray scattering (SAXS/WAXS) analyses. P10-Azo-C1 and P10-Azo-C4 with shorter alkoxy tails exhibited hierarchical structures SmB/Colob and transformed into SmA/Colob at a higher temperature, while P10-Azo-C8 and P10-Azo-C10 with longer alkoxy tails only displayed side group dominated layered SmB phase and transformed into SmA phase at higher temperatures. For P6-Azo-C4 with a shorter spacer only showed a less ordered SmA phase owing to interference by partly coupling between the side chain azobenzene mesogens and the helical backbone. More importantly, the series high densely substituted syndiotactic C1 azopolymer thin films, exhibited evidently and smoothly reversible photoresponsive properties, which demonstrated promising photoresponsive device applications.
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Affiliation(s)
- Xiao Li
- Key Laboratory of High Performance Polymer Materials and Technology (Ministry of Education), Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, 210023, Nanjing, China
- School of Information Technology, Suzhou Institute of Trade & Commerce, 215009, Suzhou, China
| | - Weiguang Zhao
- Key Laboratory of High Performance Polymer Materials and Technology (Ministry of Education), Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, 210023, Nanjing, China
| | - Ye Jin
- Key Laboratory of High Performance Polymer Materials and Technology (Ministry of Education), Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, 210023, Nanjing, China
| | - Jianjia Huang
- Key Laboratory of High Performance Polymer Materials and Technology (Ministry of Education), Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, 210023, Nanjing, China
| | - Dongzhong Chen
- Key Laboratory of High Performance Polymer Materials and Technology (Ministry of Education), Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, 210023, Nanjing, China
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2
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Kawakami C, Hara M, Nagano S, Shimomoto H, Yorimoto Y, Yamada T, Oda S, Ihara E, Seki T. Assembly Structure Formation in Bulk and Ultrathin Films of Poly(substituted methylene) Having an Azobenzene Side Chain. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:11297-11306. [PMID: 38755745 DOI: 10.1021/acs.langmuir.4c01168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2024]
Abstract
The density of the side chain introduced to a polymer main chain greatly influences the properties and functions of the polymer. This work first reports on the packing structure and properties at an interface of a poly(substituted methylene) where an azobenzene side chain is introduced at every carbon atom in the main chain (C1PAz). The structure and properties are compared with those of a conventional vinyl polymer [poly(methacrylate)] possessing an identical side-chain structure (C2PAz). The packing structure in the bulk state analyzed by X-ray measurements revealed that C1PAz adopts a highly ordered rectangular unit cell structure, whereas C2PAz shows a less ordered lamellar one. Langmuir film balance experiments indicated that both polymers with the trans-azobenzene give essentially the identical 2D side-chain occupying area on water, which agrees well with the smectic B (hexatic packing) model based on the X-ray data. Upon transfer onto a solid substrate, only C1PAz shows a conformational transformation to a spread bilayer-type layer, most probably due to conformational frustration stemming from the crowding of the side chains. This study proposes new insights into the effects of side-chain density on the self-assembly and photoreaction of azobenzene-containing polymers, which are expected to expand the possibilities of polymer design for various applications.
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Affiliation(s)
- Chikara Kawakami
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Mitsuo Hara
- Faculty of Engineering and Design, Kagawa University, 2217-20, Hayashi-cho, Takamatsu 761-0396, Japan
| | - Shusaku Nagano
- Department of Chemistry, Rikkyo University, 3-34-1, Nishiikebukuro, Toyoshima-ku, Tokyo 171-8501, Japan
| | - Hiroaki Shimomoto
- Department of Applied Chemistry, Graduate School of Science and Engineering, Ehime University, 3 Bunko-cho, Matsuyama, Ehime 790-8577, Japan
| | - Yoshitaka Yorimoto
- Department of Applied Chemistry, Graduate School of Science and Engineering, Ehime University, 3 Bunko-cho, Matsuyama, Ehime 790-8577, Japan
| | - Tomohiro Yamada
- Department of Applied Chemistry, Graduate School of Science and Engineering, Ehime University, 3 Bunko-cho, Matsuyama, Ehime 790-8577, Japan
| | - Shuichiro Oda
- Department of Applied Chemistry, Graduate School of Science and Engineering, Ehime University, 3 Bunko-cho, Matsuyama, Ehime 790-8577, Japan
| | - Eiji Ihara
- Department of Applied Chemistry, Graduate School of Science and Engineering, Ehime University, 3 Bunko-cho, Matsuyama, Ehime 790-8577, Japan
| | - Takahiro Seki
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
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3
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Fujita T, Shuta M, Mano M, Matsumoto S, Nagasawa A, Yamada A, Naito M. Forced Gradient Copolymer for Rational Design of Mussel-Inspired Adhesives and Dispersants. MATERIALS (BASEL, SWITZERLAND) 2022; 16:266. [PMID: 36614607 PMCID: PMC9822366 DOI: 10.3390/ma16010266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 12/21/2022] [Accepted: 12/22/2022] [Indexed: 06/17/2023]
Abstract
In recent years, there has been considerable research into functional materials inspired by living things. Much attention has been paid to the development of adhesive materials that mimic the adhesive proteins secreted by a mussel's foot. These mussel-inspired materials have superior adhesiveness to various adherents owing to the non-covalent interactions of their polyphenolic moieties, e.g., hydrogen bonding, electrostatic interactions, and even hydrophobic interactions. Various factors significantly affect the adhesiveness of mussel-inspired polymers, such as the molecular weight, cross-linking density, and composition ratio of the components, as well as the chemical structure of the polyphenolic adhesive moieties, such as l-3,4-dihydroxyphenylalanine (l-Dopa). However, the contributions of the position and distribution of the adhesive moiety in mussel-inspired polymers are often underestimated. In the present study, we prepared a series of mussel-inspired alkyl methacrylate copolymers by controlling the position and distribution of the adhesive moiety, which are known as "forced gradient copolymers". We used a newly designed gallic-acid-bearing methacrylate (GMA) as the polyphenolic adhesive moiety and copolymerized it with 2-ethylhexyl methacrylate (EHMA). The resulting forced gradient adhesive copolymer of GMA and EHMA (poly(GMA-co-EHMA), Poly1) was subjected to adhesion and dispersion tests with an aluminum substrate and a BaTiO3 nanoparticle in organic solvents, respectively. In particular, this study aims to clarify how the monomer position and distribution of the adhesive moiety in the mussel-inspired polymer affect its adhesion and dispersion behavior on a flat metal oxide surface and spherical inorganic oxide surfaces of several tens of nanometers in diameter, respectively. Here, forced gradient copolymer Poly1 consisted of a homopolymer moiety of EHMA (Poly3) and a random copolymer moiety of EHMA and GMA (Poly4). The composition ratio of GMA and the molecular weight were kept constant among the Poly1 series. Simultaneous control of the molecular lengths of Poly3 and Poly4 allowed us to discuss the effects on the distribution of GMA in Poly1. Poly1 exhibited apparent distribution dependency with regard to the adhesiveness and the dispersibility of BaTiO3. Poly1 showed the highest adhesion strength when the composition ratio of GMA was approximately 9 mol% in the portion of the Poly4 segment. In contrast, the block copolymer consisting of the Poly3 segment and Poly4 segment with only adhesive moiety 1 showed the lowest viscosity for dispersion of BaTiO3 nanoparticles. These results indicate that copolymers with mussel-inspired adhesive motifs require the proper design of the monomer position and distribution in Poly1 according to the shape and characteristics of the adherend to maximize their functionality. This research will facilitate the rational design of bio-inspired adhesive materials derived from plants that outperform natural materials, and it will eventually contribute to a sustainable circular economy.
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Affiliation(s)
- Takehiro Fujita
- Data-Driven Polymer Design Group, Research and Services Division of Materials Data and Integrated System (MaDIS), National Institute for Materials Science (NIMS), Ibaraki 305-0047, Japan
- Program in Materials Science and Engineering, Graduate School of Pure and Applied Sciences, University of Tsukuba, Ibaraki 305-8577, Japan
| | - Masami Shuta
- Data-Driven Polymer Design Group, Research and Services Division of Materials Data and Integrated System (MaDIS), National Institute for Materials Science (NIMS), Ibaraki 305-0047, Japan
| | - Mika Mano
- Data-Driven Polymer Design Group, Research and Services Division of Materials Data and Integrated System (MaDIS), National Institute for Materials Science (NIMS), Ibaraki 305-0047, Japan
| | - Shinnosuke Matsumoto
- Oleo & Speciality Chemicals Research Lab., NOF Corporation, Hyogo 660-0095, Japan
| | - Atsushi Nagasawa
- Oleo & Speciality Chemicals Research Lab., NOF Corporation, Hyogo 660-0095, Japan
| | - Akihiro Yamada
- Oleo & Speciality Chemicals Research Lab., NOF Corporation, Hyogo 660-0095, Japan
| | - Masanobu Naito
- Data-Driven Polymer Design Group, Research and Services Division of Materials Data and Integrated System (MaDIS), National Institute for Materials Science (NIMS), Ibaraki 305-0047, Japan
- Program in Materials Science and Engineering, Graduate School of Pure and Applied Sciences, University of Tsukuba, Ibaraki 305-8577, Japan
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4
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Li F, Xiao L, Li B, Hu X, Liu L. Carbene polymerization from the catalyzed decomposition of diazo compounds: Mechanism and modern development. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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5
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Gao BR, Wu YJ, Xu L, Zou H, Zhou L, Liu N, Wu ZQ. Synthesis of Optically Active Helical Polycarbenes through Helix-Sense-Selective Polymerization Strategy and Their Application in Chiral Separation. ACS Macro Lett 2022; 11:785-791. [PMID: 35653295 DOI: 10.1021/acsmacrolett.2c00212] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
In this work, helical polycarbenes with optical activity were designed and facilely synthesized through the helix-sense-selective polymerization (HSSP) of the diazoacetate monomer with a dimethylbenzyl ester pendant catalyzed by π-allylPdCl with chiral phosphine ligands at room temperature. The polymerization was carried out in a living and controlled style, and a range of helical polycarbenes with the desired number-average molecular weights and narrow molecular weight distributions were obtained. Circular dichroism and UV-vis analyses revealed that these polycarbenes exhibited a stable helical conformation with a preferred handedness, and their helical directions were dependent on the chirality of the chiral phosphine ligands. Further studies showed that the helical conformation of the obtained polycarbenes was from the polymeric backbone rather than the intermolecular aggregation in the solutions. Moreover, the prepared, optically active, helical polycarbenes possessed excellent enantioselective crystallization ability for threonine racemates. The enantiomeric excess (e.e.) of the induced crystals could be up to 83% via utilizing the prepared helical polycarbenes as a chiral separation agent.
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Affiliation(s)
- Bao-Rui Gao
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, and Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei 230009, Anhui Province, China
| | - Yong-Jie Wu
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, and Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei 230009, Anhui Province, China
| | - Lei Xu
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, and Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei 230009, Anhui Province, China
| | - Hui Zou
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, and Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei 230009, Anhui Province, China
| | - Li Zhou
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, and Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei 230009, Anhui Province, China
| | - Na Liu
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, and Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei 230009, Anhui Province, China
| | - Zong-Quan Wu
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, and Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei 230009, Anhui Province, China
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
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6
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Effects of the high side-chain densities of hydrophobic poly(substituted methylene)s on their surface free energies. Polym J 2022. [DOI: 10.1038/s41428-022-00656-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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7
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Abstract
A library of fluorinated aryl diazomethanes were polymerized using BF3·OEt2 as a catalyst. The polymerization of 2,3,4,5,6-pentafluorophenyl diazomethane was found to be controlled, permitted chain extensions, and facilitated access to a series of block copolymers. Moreover, the polymer chains grew in one carbon increments (so-called "C1 polymerizations") and, as such, afforded highly substituted polymers that featured aryl units pendant to every carbon atom of the backbone. The polymers were characterized using size exclusion chromatography, various spectroscopic techniques, and a series of static and dynamic contact angle measurements. Compared to less-substituted analogues that were prepared using typical C2 polymerization methodologies, the C1 fluorinated polymers were found to be more hydrophobic while maintaining a sufficient solubility to be processed into robust films.
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Affiliation(s)
- Songsu Kang
- Center for Multidimensional Carbon Materials (CMCM), Institute for Basic Science (IBS), Ulsan 44919, Republic of Korea
| | - Sherilyn J. Lu
- Center for Multidimensional Carbon Materials (CMCM), Institute for Basic Science (IBS), Ulsan 44919, Republic of Korea
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Christopher W. Bielawski
- Center for Multidimensional Carbon Materials (CMCM), Institute for Basic Science (IBS), Ulsan 44919, Republic of Korea
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
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8
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Yao XQ, Wang YS, Wang J. Cp(π-Allyl)Pd-Initiated Polymerization of Diazoacetates: Reaction Development, Kinetic Study, and Chain Transfer with Alcohols. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01966] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xing-Qi Yao
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Yi-Song Wang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Jianbo Wang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
- State Key Laboratory of Organometallic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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9
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Yoshitake A, Kudo H, Matsumoto H, Tokita M. Persistent Water Repellency of Syndiotactic Polymethylene with Perfluoroethyl Hexyloxycarbonyl Side Chains. Macromol Rapid Commun 2021; 42:e2100311. [PMID: 34355439 DOI: 10.1002/marc.202100311] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 07/07/2021] [Indexed: 01/24/2023]
Abstract
Polyacrylates bearing long fluoroalkyl (Rf) side chains are known to have ultralow surface energies that are appropriate for functional coating and fabric finishing. However, these long Rf chains cause health concerns because of the risk of toxic and bioaccumulative perfluoroalcanoic acid emission via oxidative degradation. This work demonstrates that incorporating a short Rf chain of perfluoroethylene at the end of the side chains of syndiotactic poly(substituted methylene) (PM) produces hydrophobicity. A contact angle of 105° of PM remains constant for more than 50 s, whereas that of the polyacrylate (PA) with the same side chain rapidly decreases from 85° to 44° over the same period. Such persistent water repellency of the PM is ascribed to a liquid crystal structure comprised the main chains arranged in a 2D hexagonal lattice and side chains that extend perpendicularly from these main chains.
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Affiliation(s)
- Ayano Yoshitake
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Hiroyuki Kudo
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Hidetoshi Matsumoto
- Department of Materials Science and Engineering, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Masatoshi Tokita
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo, 152-8550, Japan
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10
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Shimomoto H, Tsunematsu S, Itoh T, Ihara E. Reactivity of poly(alkoxycarbonylmethylene)s under basic conditions: alkylation of main chain carbon atoms via a ketene silyl acetal-type intermediate and cleavage of the carbon–carbon main chain. Polym Chem 2021. [DOI: 10.1039/d0py01486a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the alkylation of main chain carbon atoms and cleavage of the carbon–carbon main chain of poly(alkoxycarbonylmethylene)s.
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Affiliation(s)
- Hiroaki Shimomoto
- Department of Materials Science and Biotechnology
- Graduate School of Science and Engineering
- Ehime University
- Japan
| | - Shogo Tsunematsu
- Department of Materials Science and Biotechnology
- Graduate School of Science and Engineering
- Ehime University
- Japan
| | - Tomomichi Itoh
- Department of Materials Science and Biotechnology
- Graduate School of Science and Engineering
- Ehime University
- Japan
| | - Eiji Ihara
- Department of Materials Science and Biotechnology
- Graduate School of Science and Engineering
- Ehime University
- Japan
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11
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Cahoon CR, Goossens K, Bielawski CW. Poly(carbyne)s via reductive
C1
polymerization. POLYM INT 2020. [DOI: 10.1002/pi.6115] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Collin R Cahoon
- Center for Multidimensional Carbon Materials (CMCM), Institute for Basic Science (IBS) Ulsan Republic of Korea
- Department of Chemistry Ulsan National Institute of Science and Technology (UNIST) Ulsan Republic of Korea
| | - Karel Goossens
- Center for Multidimensional Carbon Materials (CMCM), Institute for Basic Science (IBS) Ulsan Republic of Korea
| | - Christopher W Bielawski
- Center for Multidimensional Carbon Materials (CMCM), Institute for Basic Science (IBS) Ulsan Republic of Korea
- Department of Chemistry Ulsan National Institute of Science and Technology (UNIST) Ulsan Republic of Korea
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12
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Shimomoto H, Hohsaki R, Hiramatsu D, Itoh T, Ihara E. Pd-Initiated Polymerization of Dendron-Containing Diazoacetates to Afford Dendronized Poly(substituted methylene)s with Narrow Molecular Weight Distribution and Its Application to Synthesis of pH-Responsive Dendronized Polymers. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01029] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Hiroaki Shimomoto
- Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
| | - Ryo Hohsaki
- Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
| | - Daisuke Hiramatsu
- Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
| | - Tomomichi Itoh
- Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
| | - Eiji Ihara
- Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
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13
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Li X, Mu B, Chen C, Chen J, Liu J, Liu F, Chen D. Significantly Enhanced Thermotropic Liquid Crystalline Columnar Mesophases in Stereoregular Polymethylenes with Discotic Triphenylene Side Groups. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b01433] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Xiao Li
- Key Laboratory of High Performance Polymer Materials and Technology of Ministry of Education, Collaborative Innovation Center of Chemistry for Life Sciences, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Bin Mu
- School of Natural and Applied Sciences, Northwestern Polytechnical University, Xi’an 710072, China
| | - Changlong Chen
- State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Materials Science & Engineering, Xi’an Jiaotong University, Xi’an 710049, China
| | - Jian Chen
- Key Laboratory of High Performance Polymer Materials and Technology of Ministry of Education, Collaborative Innovation Center of Chemistry for Life Sciences, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Jiang Liu
- Key Laboratory of High Performance Polymer Materials and Technology of Ministry of Education, Collaborative Innovation Center of Chemistry for Life Sciences, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Feng Liu
- State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Materials Science & Engineering, Xi’an Jiaotong University, Xi’an 710049, China
| | - Dongzhong Chen
- Key Laboratory of High Performance Polymer Materials and Technology of Ministry of Education, Collaborative Innovation Center of Chemistry for Life Sciences, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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14
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Ihara E, Shimomoto H. Polymerization of diazoacetates: New synthetic strategy for C-C main chain polymers. POLYMER 2019. [DOI: 10.1016/j.polymer.2018.11.049] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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15
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Zhukhovitskiy AV, Kobylianskii IJ, Thomas AA, Evans AM, Delaney CP, Flanders NC, Denmark SE, Dichtel WR, Toste FD. A Dinuclear Mechanism Implicated in Controlled Carbene Polymerization. J Am Chem Soc 2019; 141:6473-6478. [PMID: 30964670 PMCID: PMC6615555 DOI: 10.1021/jacs.9b01532] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Carbene polymerization provides polyolefins that cannot be readily prepared from olefin monomers; however, controlled and living carbene polymerization has been a long-standing challenge. Here we report a new class of initiators, (π-allyl)palladium carboxylate dimers, which polymerize ethyl diazoacetate, a carbene precursor in a controlled and quasi-living manner, with nearly quantitative yields, degrees of polymerization >100, molecular weight dispersities 1.2-1.4, and well-defined, diversifiable chain ends. This method also provides block copolycarbenes that undergo microphase segregation. Experimental and theoretical mechanistic analysis supports a new dinuclear mechanism for this process.
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Affiliation(s)
| | - Ilia J. Kobylianskii
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Andy A. Thomas
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Austin M. Evans
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Connor P. Delaney
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Nathan C. Flanders
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Scott E. Denmark
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - William R. Dichtel
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - F. Dean Toste
- Department of Chemistry, University of California, Berkeley, California 94720, United States
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16
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Li X, Sun Y, Chen J, Wu Z, Cheng P, Li Q, Fang J, Chen D. Enhanced fluorescence quantum yield of syndiotactic side-chain TPE polymers via Rh-catalyzed carbene polymerization: influence of the substitution density and spacer length. Polym Chem 2019. [DOI: 10.1039/c8py01729h] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The fluorescence quantum yields of the TPE-based C1 polymers also increase with the shortened spacer lengths and further improve by about 20% as compared with the corresponding C2 polyacrylate counterparts.
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Affiliation(s)
- Xiao Li
- Key Laboratory of High Performance Polymer Materials and Technology of Ministry of Education
- Collaborative Innovation Center of Chemistry for Life Sciences
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- Nanjing University
| | - Yuhao Sun
- Key Laboratory of High Performance Polymer Materials and Technology of Ministry of Education
- Collaborative Innovation Center of Chemistry for Life Sciences
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- Nanjing University
| | - Jian Chen
- Key Laboratory of High Performance Polymer Materials and Technology of Ministry of Education
- Collaborative Innovation Center of Chemistry for Life Sciences
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- Nanjing University
| | - Zhongying Wu
- Key Laboratory of High Performance Polymer Materials and Technology of Ministry of Education
- Collaborative Innovation Center of Chemistry for Life Sciences
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- Nanjing University
| | - Pin Cheng
- Key Laboratory of High Performance Polymer Materials and Technology of Ministry of Education
- Collaborative Innovation Center of Chemistry for Life Sciences
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- Nanjing University
| | - Qian Li
- Key Laboratory of High Performance Polymer Materials and Technology of Ministry of Education
- Collaborative Innovation Center of Chemistry for Life Sciences
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- Nanjing University
| | - Jianglin Fang
- Center for Materials Analysis
- Nanjing University
- Nanjing 210093
- China
| | - Dongzhong Chen
- Key Laboratory of High Performance Polymer Materials and Technology of Ministry of Education
- Collaborative Innovation Center of Chemistry for Life Sciences
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- Nanjing University
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17
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Chu JH, Xu XH, Kang SM, Liu N, Wu ZQ. Fast Living Polymerization and Helix-Sense-Selective Polymerization of Diazoacetates Using Air-Stable Palladium(II) Catalysts. J Am Chem Soc 2018; 140:17773-17781. [DOI: 10.1021/jacs.8b11628] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jia-Hong Chu
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, and Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei 230009, Anhui Province, People’s Republic of China
| | - Xun-Hui Xu
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, and Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei 230009, Anhui Province, People’s Republic of China
| | - Shu-Ming Kang
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, and Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei 230009, Anhui Province, People’s Republic of China
| | - Na Liu
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, and Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei 230009, Anhui Province, People’s Republic of China
| | - Zong-Quan Wu
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, and Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei 230009, Anhui Province, People’s Republic of China
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18
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19
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Cao T, Chen C, Liu LJ. Synthesis and Enhanced Photofluorescence of Pyrazoline‐Ester Copolymers from Bisdiazoacetates and Diacrylates. MACROMOL CHEM PHYS 2018. [DOI: 10.1002/macp.201800023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ting Cao
- College of Chemistry and Molecular SciencesWuhan University Wuhan 430072 China
| | - Cheng Chen
- College of Chemistry and Molecular SciencesWuhan University Wuhan 430072 China
| | - Li Jian Liu
- College of Chemistry and Molecular SciencesWuhan University Wuhan 430072 China
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20
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Zhukhovitskiy A, Kobylianskii IJ, Wu CY, Toste FD. Migratory Insertion of Carbenes into Au(III)-C Bonds. J Am Chem Soc 2018; 140:466-474. [PMID: 29260868 PMCID: PMC5765531 DOI: 10.1021/jacs.7b11435] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Indexed: 11/29/2022]
Abstract
Migratory insertion of carbon-based species into transition-metal-carbon bonds is a mechanistic manifold of vast significance: it underlies the Fischer-Tropsch process, Mizoroki-Heck reaction, Ziegler-Natta and analogous late-transition-metal-catalyzed olefin polymerizations, and a number of carbonylative methods for the synthesis of ketones and esters, among others. Although this type of reactivity is well-precedented for most transition metals, gold constitutes a notable exception, with virtually no well-characterized examples known to date. Yet, the complementary reactivity of gold to numerous other transition metals would offer new synthetic opportunities for migratory insertion of carbon-based species into gold-carbon bonds. Here we report the discovery of well-defined Au(III) complexes that participate in rapid migratory insertion of carbenes derived from silyl- or carbonyl-stabilized diazoalkanes into Au-C bonds at temperatures ≥ -40 °C. Through a combined theoretical and experimental approach, key kinetic, thermodynamic, and structural details of this reaction manifold were elucidated. This study paves the way for homogeneous gold-catalyzed processes incorporating carbene migratory insertion steps.
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Affiliation(s)
| | | | | | - F. Dean Toste
- Department of Chemistry, University of California, Berkeley, California 94720, United States
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21
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Shimomoto H, Kudo T, Tsunematsu S, Itoh T, Ihara E. Fluorinated Poly(substituted methylene)s Prepared by Pd-Initiated Polymerization of Fluorine-Containing Alkyl and Phenyl Diazoacetates: Their Unique Solubility and Postpolymerization Modification. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01964] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Hiroaki Shimomoto
- Department of Materials Science and
Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
| | - Tomohiko Kudo
- Department of Materials Science and
Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
| | - Shogo Tsunematsu
- Department of Materials Science and
Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
| | - Tomomichi Itoh
- Department of Materials Science and
Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
| | - Eiji Ihara
- Department of Materials Science and
Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
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22
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Osterwinter GJ, Navarro-Crespo R, Prucker O, Henze M, Rühe J. Surface-attached polymer networks through carbene intermediates generated from α-diazo esters. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/pola.28702] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Gregor J. Osterwinter
- Department of Microsystems Engineering (IMTEK), Laboratory of Chemistry and Physics of Interfaces; University of Freiburg; Freiburg 79110 Germany
| | - Rodrigo Navarro-Crespo
- Department of Microsystems Engineering (IMTEK), Laboratory of Chemistry and Physics of Interfaces; University of Freiburg; Freiburg 79110 Germany
| | - Oswald Prucker
- Department of Microsystems Engineering (IMTEK), Laboratory of Chemistry and Physics of Interfaces; University of Freiburg; Freiburg 79110 Germany
| | - Michael Henze
- Department of Microsystems Engineering (IMTEK), Laboratory of Chemistry and Physics of Interfaces; University of Freiburg; Freiburg 79110 Germany
| | - Jürgen Rühe
- Department of Microsystems Engineering (IMTEK), Laboratory of Chemistry and Physics of Interfaces; University of Freiburg; Freiburg 79110 Germany
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23
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Krappitz T, Feibusch P, Aroonsirichock C, Hoven VP, Theato P. Synthesis of Poly(glycidyl 2-ylidene-acetate) and Functionalization by Nucleophilic Ring-Opening Reactions. Macromolecules 2017. [DOI: 10.1021/acs.macromol.6b02465] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tim Krappitz
- Institute
for Technical and Macromolecular Chemistry, Department of Chemistry, University of Hamburg, Bundesstraße 45, D-20146 Hamburg, Germany
| | - Philip Feibusch
- Institute
for Technical and Macromolecular Chemistry, Department of Chemistry, University of Hamburg, Bundesstraße 45, D-20146 Hamburg, Germany
- Department
of Chemistry, Fordham University, Bronx, New York 10458, United States
| | - Choatchanit Aroonsirichock
- Organic
Synthesis Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Phayathai Rd. Pathumwan, Bangkok 10330, Thailand
| | - Voravee P. Hoven
- Organic
Synthesis Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Phayathai Rd. Pathumwan, Bangkok 10330, Thailand
| | - Patrick Theato
- Institute
for Technical and Macromolecular Chemistry, Department of Chemistry, University of Hamburg, Bundesstraße 45, D-20146 Hamburg, Germany
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24
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Shimomoto H, Kawamata J, Murakami H, Yamashita K, Itoh T, Ihara E. Polymerization of alkyl diazoacetates initiated by the amidinate/Pd system: efficient synthesis of high molecular weight poly(alkoxycarbonylmethylene)s with moderate stereoregularity. Polym Chem 2017. [DOI: 10.1039/c7py00816c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The initiating ability of a new system, amidinate/Pd, for the polymerization of diazoacetates is described.
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Affiliation(s)
- Hiroaki Shimomoto
- Department of Materials Science and Biotechnology
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
| | - Junya Kawamata
- Department of Materials Science and Biotechnology
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
| | - Hirokazu Murakami
- Department of Materials Science and Biotechnology
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
| | - Kazuki Yamashita
- Department of Materials Science and Biotechnology
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
| | - Tomomichi Itoh
- Department of Materials Science and Biotechnology
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
| | - Eiji Ihara
- Department of Materials Science and Biotechnology
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
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25
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Li Y, Chen C, Wu J, Jia X, Lu Y, Chen F, Liu L. Copolymerization of alkyl diazoacetates with α,β-unsaturated aldehydes: synthesis and application. Polym Chem 2016. [DOI: 10.1039/c6py01666a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Copolymerization of alkyl diazoacetates with α,β-unsaturated aldehydes and the product's fluorescence property.
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Affiliation(s)
- Yan Li
- Key Laboratory of Biomedical Polymers
- Ministry of Education
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
| | - Cheng Chen
- Key Laboratory of Biomedical Polymers
- Ministry of Education
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
| | - Jinlong Wu
- Key Laboratory of Biomedical Polymers
- Ministry of Education
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
| | - Xiangxiang Jia
- Key Laboratory of Biomedical Polymers
- Ministry of Education
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
| | - Yufan Lu
- Key Laboratory of Biomedical Polymers
- Ministry of Education
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
| | - Fangjuan Chen
- Key Laboratory of Biomedical Polymers
- Ministry of Education
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
| | - Lijian Liu
- Key Laboratory of Biomedical Polymers
- Ministry of Education
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
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26
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Krappitz T, Brauer D, Theato P. Synthesis of poly(allyl 2-ylidene-acetate) and subsequent post-polymerization modification via thiol–ene reaction. Polym Chem 2016. [DOI: 10.1039/c6py00818f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Poly(allyl 2-ylidene-acetate) (Mw = 125 300 g mol−1) was synthesized via rhodium mediated catalysis of allyl 2-diazoacetate and its polymerization kinetics and polymer characteristics are presented and discussed. Furthermore, post-polymerization modification utilized the reactive character of poly(allyl 2-ylidene-acetate) by means of thiol–ene reactions.
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Affiliation(s)
- Tim Krappitz
- Department of Chemistry
- Institute for Technical and Macromolecular Chemistry
- University of Hamburg
- D-20146 Hamburg
- Germany
| | - Daniel Brauer
- Department of Chemistry
- Institute for Technical and Macromolecular Chemistry
- University of Hamburg
- D-20146 Hamburg
- Germany
| | - Patrick Theato
- Department of Chemistry
- Institute for Technical and Macromolecular Chemistry
- University of Hamburg
- D-20146 Hamburg
- Germany
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27
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Koshimizu N, Aizawa Y, Sakajiri K, Shikinaka K, Shigehara K, Kang S, Tokita M. Thermotropic Behavior of Syndiotactic Polymethylenes with ω-[4-(trans-4-Pentylcyclohexyl)phenoxy]alkyloxycarbonyl Side Chains. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00743] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Noboru Koshimizu
- Department
of Organic and Polymeric Materials, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Yosuke Aizawa
- Department
of Organic and Polymeric Materials, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Koichi Sakajiri
- Department
of Organic and Polymeric Materials, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Kazuhiro Shikinaka
- Graduate
School of Engineering, Tokyo University of Agriculture and Technology, Naka-cho, Koganei, Tokyo 184-8588, Japan
| | - Kiyotaka Shigehara
- Graduate
School of Engineering, Tokyo University of Agriculture and Technology, Naka-cho, Koganei, Tokyo 184-8588, Japan
| | - Sungmin Kang
- Department
of Organic and Polymeric Materials, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Masatoshi Tokita
- Department
of Organic and Polymeric Materials, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
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28
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Shimomoto H, Asano H, Itoh T, Ihara E. Pd-initiated controlled polymerization of diazoacetates with a bulky substituent: synthesis of well-defined homopolymers and block copolymers with narrow molecular weight distribution from cyclophosphazene-containing diazoacetates. Polym Chem 2015. [DOI: 10.1039/c5py00532a] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pd-initiated polymerization of cyclophosphazene-containing diazoacetates proceeded in a controlled manner.
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Affiliation(s)
- Hiroaki Shimomoto
- Department of Materials Science and Biotechnology
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
| | - Hironori Asano
- Department of Materials Science and Biotechnology
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
| | - Tomomichi Itoh
- Department of Materials Science and Biotechnology
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
| | - Eiji Ihara
- Department of Materials Science and Biotechnology
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
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29
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Xiao LQ, Jia XX, Liao LQ, Liu LJ. Synthesis of azo-incorporated copolymers by C1/N2C1 copolymerization under microwave irradiation. CHINESE CHEM LETT 2014. [DOI: 10.1016/j.cclet.2014.09.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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30
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Nzulu F, Bontemps A, Robert J, Barbazanges M, Fensterbank L, Goddard JP, Malacria M, Ollivier C, Petit M, Rieger J, Stoffelbach F. Gold-Catalyzed Polymerization Based on Carbene Polycyclopropanation. Macromolecules 2014. [DOI: 10.1021/ma501516s] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Frida Nzulu
- Institut
Parisien de Chimie Moléculaire, Sorbonne Universités, UPMC Univ Paris 06, UMR 8232, F-75252 Paris Cedex 05, France
- Institut
Parisien de Chimie Moléculaire, CNRS, UMR 8232, F 75252 Paris Cedex 05, France
| | - Alexis Bontemps
- Institut
Parisien de Chimie Moléculaire, Sorbonne Universités, UPMC Univ Paris 06, UMR 8232, F-75252 Paris Cedex 05, France
- Institut
Parisien de Chimie Moléculaire, CNRS, UMR 8232, F 75252 Paris Cedex 05, France
| | - Julien Robert
- Institut
Parisien de Chimie Moléculaire, Sorbonne Universités, UPMC Univ Paris 06, UMR 8232, F-75252 Paris Cedex 05, France
- Institut
Parisien de Chimie Moléculaire, CNRS, UMR 8232, F 75252 Paris Cedex 05, France
| | - Marion Barbazanges
- Institut
Parisien de Chimie Moléculaire, Sorbonne Universités, UPMC Univ Paris 06, UMR 8232, F-75252 Paris Cedex 05, France
- Institut
Parisien de Chimie Moléculaire, CNRS, UMR 8232, F 75252 Paris Cedex 05, France
| | - Louis Fensterbank
- Institut
Parisien de Chimie Moléculaire, Sorbonne Universités, UPMC Univ Paris 06, UMR 8232, F-75252 Paris Cedex 05, France
- Institut
Parisien de Chimie Moléculaire, CNRS, UMR 8232, F 75252 Paris Cedex 05, France
| | - Jean-Philippe Goddard
- Institut
Parisien de Chimie Moléculaire, Sorbonne Universités, UPMC Univ Paris 06, UMR 8232, F-75252 Paris Cedex 05, France
- Institut
Parisien de Chimie Moléculaire, CNRS, UMR 8232, F 75252 Paris Cedex 05, France
| | - Max Malacria
- Institut
Parisien de Chimie Moléculaire, Sorbonne Universités, UPMC Univ Paris 06, UMR 8232, F-75252 Paris Cedex 05, France
- Institut
Parisien de Chimie Moléculaire, CNRS, UMR 8232, F 75252 Paris Cedex 05, France
| | - Cyril Ollivier
- Institut
Parisien de Chimie Moléculaire, Sorbonne Universités, UPMC Univ Paris 06, UMR 8232, F-75252 Paris Cedex 05, France
- Institut
Parisien de Chimie Moléculaire, CNRS, UMR 8232, F 75252 Paris Cedex 05, France
| | - Marc Petit
- Institut
Parisien de Chimie Moléculaire, Sorbonne Universités, UPMC Univ Paris 06, UMR 8232, F-75252 Paris Cedex 05, France
- Institut
Parisien de Chimie Moléculaire, CNRS, UMR 8232, F 75252 Paris Cedex 05, France
| | - Jutta Rieger
- Institut
Parisien de Chimie Moléculaire, Sorbonne Universités, UPMC Univ Paris 06, UMR 8232, F-75252 Paris Cedex 05, France
- Institut
Parisien de Chimie Moléculaire, CNRS, UMR 8232, F 75252 Paris Cedex 05, France
| | - François Stoffelbach
- Institut
Parisien de Chimie Moléculaire, Sorbonne Universités, UPMC Univ Paris 06, UMR 8232, F-75252 Paris Cedex 05, France
- Institut
Parisien de Chimie Moléculaire, CNRS, UMR 8232, F 75252 Paris Cedex 05, France
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31
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Xiao L, Li F, Li Y, Jia X, Liu L. Kinetic study of carbene polymerization of ethyl diazoacetate by palladium and rhodium catalysts. RSC Adv 2014. [DOI: 10.1039/c4ra05455e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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32
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Xiao L, Li Y, Jia X, Liao L, Liu L. Microwave-assisted one-pot copolymerization of cyclic monomers and ethyl diazoacetate. POLYM INT 2014. [DOI: 10.1002/pi.4740] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Longqiang Xiao
- Key Laboratory of Biomedical Polymers, Ministry of Education, College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 China
| | - Yan Li
- Key Laboratory of Biomedical Polymers, Ministry of Education, College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 China
| | - Xiangxiang Jia
- Key Laboratory of Biomedical Polymers, Ministry of Education, College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 China
| | - Liqiong Liao
- Key Laboratory of Biomedical Polymers, Ministry of Education, College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 China
| | - Lijian Liu
- Key Laboratory of Biomedical Polymers, Ministry of Education, College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 China
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33
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Walters AJC, Reek JN, de Bruin B. Computed Propagation and Termination Steps in [(Cycloocta-2,6-dien-1-yl)RhIII(polymeryl)]+ Catalyzed Carbene Polymerization Reactions. ACS Catal 2014. [DOI: 10.1021/cs500160c] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Annemarie J. C. Walters
- Van ‘t Hoff Institute
for Molecular Sciences (HIMS), Homogeneous and Supramolecular Catalysis
group, Universiteit van Amsterdam (UvA), P.O. Box 94720, 1090 GS Amsterdam, The Netherlands
| | - Joost N.H. Reek
- Van ‘t Hoff Institute
for Molecular Sciences (HIMS), Homogeneous and Supramolecular Catalysis
group, Universiteit van Amsterdam (UvA), P.O. Box 94720, 1090 GS Amsterdam, The Netherlands
| | - Bas de Bruin
- Van ‘t Hoff Institute
for Molecular Sciences (HIMS), Homogeneous and Supramolecular Catalysis
group, Universiteit van Amsterdam (UvA), P.O. Box 94720, 1090 GS Amsterdam, The Netherlands
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34
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Franssen NMG, Ensing B, Hegde M, Dingemans TJ, Norder B, Picken SJ, Alberda van Ekenstein GOR, van Eck ERH, Elemans JAAW, Vis M, Reek JNH, de Bruin B. On the “Tertiary Structure” of Poly-Carbenes; Self-Assembly of sp3-Carbon-Based Polymers into Liquid-Crystalline Aggregates. Chemistry 2013; 19:11577-89. [PMID: 23852805 DOI: 10.1002/chem.201301403] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2013] [Indexed: 11/06/2022]
Affiliation(s)
- Nicole M G Franssen
- Van 't Hoff Institute for Molecular Sciences (HIMS), Universiteit van Amsterdam, P. O. Box 94720, 1090 GS Amsterdam, The Netherlands
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35
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Tokita M, Shikinaka K, Hoshino T, Fujii K, Mikami J, Koshimizu N, Sakajiri K, Kang S, Watanabe J, Shigehara K. Thermotropic behavior of syndiotactic polymethylenes with alkyloxycarbonyl side chains. POLYMER 2013. [DOI: 10.1016/j.polymer.2012.12.072] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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36
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Franssen NMG, Reek JNH, de Bruin B. Synthesis of functional ‘polyolefins’: state of the art and remaining challenges. Chem Soc Rev 2013; 42:5809-32. [DOI: 10.1039/c3cs60032g] [Citation(s) in RCA: 306] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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37
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Franssen NMG, Reek JNH, de Bruin B. A different route to functional polyolefins: olefin–carbene copolymerisation. Dalton Trans 2013; 42:9058-68. [DOI: 10.1039/c3dt32941k] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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38
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Ihara E, Okada R, Sogai T, Asano T, Kida M, Inoue K, Itoh T, Shimomoto H, Ishibashi Y, Asahi T. Pd-mediated polymerization of diazoacetates with aromatic ester group: Synthesis and photophysical property of poly(1-pyrenylmethoxycarbonylmethylene). ACTA ACUST UNITED AC 2012. [DOI: 10.1002/pola.26480] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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39
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Chromatographic examination of the chemical composition and sequence distribution of copolymers from ethyl and benzyl diazoacetate. J Chromatogr A 2012; 1255:259-66. [DOI: 10.1016/j.chroma.2012.02.059] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2011] [Revised: 01/19/2012] [Accepted: 02/23/2012] [Indexed: 11/21/2022]
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40
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Suarez AIO, del Río MP, Remerie K, Reek JNH, de Bruin B. Rh-Mediated C1-Polymerization: Copolymers from Diazoesters and Sulfoxonium Ylides. ACS Catal 2012. [DOI: 10.1021/cs300363m] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alma I. Olivos Suarez
- Department of Homogeneous and
Supramolecular Catalysis, Van't Hoff Institute for Molecular Sciences
(HIMS), Universiteit van Amsterdam, P.O.
Box 94720, 1090 GS Amsterdam, The Netherlands
| | - M. Pilar del Río
- Department of Homogeneous and
Supramolecular Catalysis, Van't Hoff Institute for Molecular Sciences
(HIMS), Universiteit van Amsterdam, P.O.
Box 94720, 1090 GS Amsterdam, The Netherlands
| | - Klaas Remerie
- SABIC Technology and innovation, STC Geleen, P.O. Box 319 6160 AH Geleen,
The Netherlands
| | - Joost N. H. Reek
- Department of Homogeneous and
Supramolecular Catalysis, Van't Hoff Institute for Molecular Sciences
(HIMS), Universiteit van Amsterdam, P.O.
Box 94720, 1090 GS Amsterdam, The Netherlands
| | - Bas de Bruin
- Department of Homogeneous and
Supramolecular Catalysis, Van't Hoff Institute for Molecular Sciences
(HIMS), Universiteit van Amsterdam, P.O.
Box 94720, 1090 GS Amsterdam, The Netherlands
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41
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Ihara E, Akazawa M, Itoh T, Fujii M, Yamashita K, Inoue K, Itoh T, Shimomoto H. π-AllylPdCl-Based Initiating Systems for Polymerization of Alkyl Diazoacetates: Initiation and Termination Mechanism Based on Analysis of Polymer Chain End Structures. Macromolecules 2012. [DOI: 10.1021/ma3013527] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Eiji Ihara
- Department of Material Science and
Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577,
Japan
| | - Masaki Akazawa
- Department of Material Science and
Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577,
Japan
| | - Takashi Itoh
- Department of Material Science and
Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577,
Japan
| | - Mototaka Fujii
- Department of Material Science and
Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577,
Japan
| | - Kazuki Yamashita
- Department of Material Science and
Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577,
Japan
| | - Kenzo Inoue
- Department of Material Science and
Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577,
Japan
| | - Tomomichi Itoh
- Department of Material Science and
Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577,
Japan
| | - Hiroaki Shimomoto
- Department of Material Science and
Biotechnology, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577,
Japan
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42
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Franssen NMG, Remerie K, Macko T, Reek JNH, de Bruin B. Controlled Synthesis of Functional Copolymers with Blocky Architectures via Carbene Polymerization. Macromolecules 2012. [DOI: 10.1021/ma300314q] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nicole M. G. Franssen
- Van ̀t Hoff Institute
for Molecular Sciences (HIMS), Department of Homogeneous and Supramolecular
Catalysis, Universiteit van Amsterdam,
P.O. Box 94720, 1090 GS Amsterdam, The Netherlands
- Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Klaas Remerie
- SABIC Technology and Innovation, STC Geleen, P.O. Box 319, 6160 AH Geleen,
The Netherlands
| | - Tibor Macko
- Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands
- German Institute for Polymers, Schlossgartenstr. 6, 64289 Darmstadt,
Germany
| | - Joost N. H. Reek
- Van ̀t Hoff Institute
for Molecular Sciences (HIMS), Department of Homogeneous and Supramolecular
Catalysis, Universiteit van Amsterdam,
P.O. Box 94720, 1090 GS Amsterdam, The Netherlands
| | - Bas de Bruin
- Van ̀t Hoff Institute
for Molecular Sciences (HIMS), Department of Homogeneous and Supramolecular
Catalysis, Universiteit van Amsterdam,
P.O. Box 94720, 1090 GS Amsterdam, The Netherlands
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43
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Walters AJC, Troeppner O, Ivanović-Burmazović I, Tejel C, del Río MP, Reek JNH, de Bruin B. Stereospecific Carbene Polymerization with Oxygenated Rh(diene) Species. Angew Chem Int Ed Engl 2012; 51:5157-61. [DOI: 10.1002/anie.201200069] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2012] [Revised: 03/09/2012] [Indexed: 11/11/2022]
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44
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Walters AJC, Troeppner O, Ivanović-Burmazović I, Tejel C, del Río MP, Reek JNH, de Bruin B. Stereospecific Carbene Polymerization with Oxygenated Rh(diene) Species. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201200069] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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45
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Walters AJC, Jellema E, Finger M, Aarnoutse P, Smits JMM, Reek JNH, de Bruin B. Rh-Mediated Carbene Polymerization: from Multistep Catalyst Activation to Alcohol-Mediated Chain-Transfer. ACS Catal 2012. [DOI: 10.1021/cs200607s] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Annemarie J. C. Walters
- Van ‘t Hoff Institute
for Molecular Sciences (HIMS), University of Amsterdam, P.O. Box 94720 1090 GE Amsterdam, The Netherlands
| | - Erica Jellema
- Van ‘t Hoff Institute
for Molecular Sciences (HIMS), University of Amsterdam, P.O. Box 94720 1090 GE Amsterdam, The Netherlands
| | - Markus Finger
- Van ‘t Hoff Institute
for Molecular Sciences (HIMS), University of Amsterdam, P.O. Box 94720 1090 GE Amsterdam, The Netherlands
- Dutch Polymer Institute (DPI), P.O. Box 902 5600 AX, Eindhoven, The Netherlands
| | - Petra Aarnoutse
- Van ‘t Hoff Institute
for Molecular Sciences (HIMS), University of Amsterdam, P.O. Box 94720 1090 GE Amsterdam, The Netherlands
| | - Jan M. M. Smits
- Institute for Molecules and Materials
(IMM), Radboud University Nijmegen, Heyendaalseweg
135, 6525 AJ Nijmegen, The Netherlands
| | - Joost N. H. Reek
- Van ‘t Hoff Institute
for Molecular Sciences (HIMS), University of Amsterdam, P.O. Box 94720 1090 GE Amsterdam, The Netherlands
| | - Bas de Bruin
- Van ‘t Hoff Institute
for Molecular Sciences (HIMS), University of Amsterdam, P.O. Box 94720 1090 GE Amsterdam, The Netherlands
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46
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Finger M, Lutz M, Reek JNH, de Bruin B. Synthesis and Reactivity of Ester‐Functionalized 5‐Membered Rh
I
‐κ
2
‐C,O‐Chelates and Their Relevance in Rh(cod)‐Mediated Carbene Polymerization. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201100981] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Markus Finger
- Van't Hoff Institute for Molecular Sciences, University ofAmsterdam, Postbus 94720, 1090 GE Amsterdam, The Netherlands
- Dutch Polymer Institute, P. O. Box, 5600 AX Eindhoven, The Netherlands
| | - Martin Lutz
- Bijvoet Center for Biomolecular Research, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Joost N. H. Reek
- Van't Hoff Institute for Molecular Sciences, University ofAmsterdam, Postbus 94720, 1090 GE Amsterdam, The Netherlands
| | - Bas de Bruin
- Van't Hoff Institute for Molecular Sciences, University ofAmsterdam, Postbus 94720, 1090 GE Amsterdam, The Netherlands
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47
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Ihara E, Takahashi H, Akazawa M, Itoh T, Inoue K. Polymerization of Various Alkyl Diazoacetates Initiated with (N-Heterocyclic Carbene)Pd/Borate Systems. Macromolecules 2011. [DOI: 10.1021/ma200064b] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Eiji Ihara
- Department of Material Science and Biotechnology, Graduate School of Science and Engineering, Venture Business Laboratory, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
| | - Hiroki Takahashi
- Department of Material Science and Biotechnology, Graduate School of Science and Engineering, Venture Business Laboratory, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
| | - Masaki Akazawa
- Department of Material Science and Biotechnology, Graduate School of Science and Engineering, Venture Business Laboratory, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
| | - Tomomichi Itoh
- Department of Material Science and Biotechnology, Graduate School of Science and Engineering, Venture Business Laboratory, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
| | - Kenzo Inoue
- Department of Material Science and Biotechnology, Graduate School of Science and Engineering, Venture Business Laboratory, Ehime University, 3 Bunkyo-cho, Matsuyama 790-8577, Japan
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48
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Finger M, Reek JNH, de Bruin B. Role of β-H Elimination in Rhodium-Mediated Carbene Insertion Polymerization. Organometallics 2011. [DOI: 10.1021/om1011209] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Markus Finger
- Van’t Hoff Institute for Molecular Sciences (HIMS), University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
- Dutch Polymer Institute DPI, PO Box 5600 AX, Eindhoven, The Netherlands
| | - Joost N. H. Reek
- Van’t Hoff Institute for Molecular Sciences (HIMS), University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Bas de Bruin
- Van’t Hoff Institute for Molecular Sciences (HIMS), University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
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49
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Franssen NMG, Walters AJC, Reek JNH, de Bruin B. Carbene insertion into transition metal–carbon bonds: a new tool for catalytic C–C bond formation. Catal Sci Technol 2011. [DOI: 10.1039/c0cy00065e] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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50
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Transfer-volume effects in two-dimensional chromatography: adsorption-phenomena in second-dimension size-exclusion chromatography. J Chromatogr A 2010; 1218:1147-52. [PMID: 21227427 DOI: 10.1016/j.chroma.2010.12.080] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2010] [Revised: 12/13/2010] [Accepted: 12/17/2010] [Indexed: 11/22/2022]
Abstract
Gradient-elution LC × LC is a valuable technique for the characterization of complex biological samples as well as for synthetic polymers. Breakthrough and viscous fingering may yield misleading information on the sample characteristics or deteriorate separation. In LC × SEC another phenomenon may jeopardize the separation. If the analytes adsorb on the SEC column under the injection-plug conditions, peak splitting may occur. In LC × LC the effluent from the first column is the sample solvent for the analytes injected into the second dimension. If a gradient-elution LC × SEC setup is used (i.e. if reversed-phase gradient-elution LC is coupled to organic SEC and if normal-phase gradient-elution LC is coupled to SEC with a polar solvent), the percentage of weak solvent may be significant, especially at short analysis times. In this case adsorption in the first-dimension-effluent zone on the second-dimension SEC column can become an issue and two peaks--the first eluting in size-exclusion mode and the second undergoing adsorption--can be obtained. The work presented in this paper documents peak splitting in LC × SEC of polymers. The adsorption of the polymer on the size-exclusion column was proven in one-dimensional isocratic runs. The observed effects were modeled and visualized through simulation. Studies on the influence of the transfer volume were carried out. Keeping the transfer volume as small as possible helped to minimize peak splitting due to adsorption.
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