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Kadokawa JI. Fabrication of Nanostructured Supramolecules through Helical Inclusion of Amylose toward Hydrophobic Polyester Guests, Biomimetically through Vine-Twining Polymerization Process. Biomimetics (Basel) 2023; 8:516. [PMID: 37999157 PMCID: PMC10669376 DOI: 10.3390/biomimetics8070516] [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: 10/11/2023] [Revised: 10/23/2023] [Accepted: 10/31/2023] [Indexed: 11/25/2023] Open
Abstract
This review article presents the biomimetic helical inclusion of amylose toward hydrophobic polyesters as guests through a vine-twining polymerization process, which has been performed in the glucan phosphorylase (GP)-catalyzed enzymatic polymerization field to fabricate supramolecules and other nanostructured materials. Amylose, which is a representative abundant glucose polymer (polysaccharide) with left-handed helical conformation, is well known to include a number of hydrophobic guest molecules with suitable geometry and size in its cavity to construct helical inclusion complexes. Pure amylose is prepared through enzymatic polymerization of α-d-glucose 1-phosphate as a monomer using a maltooligosaccharide as a primer, catalyzed by GP. It is reported that the elongated amylosic chain at the nonreducing end in enzymatic polymerization twines around guest polymers with suitable structures and moderate hydrophobicity, which is dispersed in aqueous polymerization media, to form amylosic nanostructured inclusion complexes. As the image of this system is similar to how vines of a plant grow around a support rod, this polymerization has been named 'vine-twining polymerization'. In particular, the helical inclusion behavior of the enzymatically produced amylose toward hydrophobic polyesters depending on their structures, e.g., chain lengths and substituents, has been systematically investigated in the vine-twining polymerization field. Furthermore, amylosic supramolecular network materials, such as hydrogels, are fabricated through vine-twining polymerization by using copolymers, where hydrophobic polyester guests or maltooligosaccharide primers are covalently modified on hydrophilic main-chain polymers. The vine-twining polymerization using such copolymers in the appropriate systems induces the formation of amylosic nanostructured inclusion complexes among them, which act as cross-linking points, giving rise to supramolecular networks at the nanoscale. The resulting materials form supramolecular hydrogels, films, and microparticles.
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Affiliation(s)
- Jun-Ichi Kadokawa
- Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan
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Vine-Twining Inclusion Behavior of Amylose towards Hydrophobic Polyester, Poly(β-propiolactone), in Glucan Phosphorylase-Catalyzed Enzymatic Polymerization. Life (Basel) 2023; 13:life13020294. [PMID: 36836651 PMCID: PMC9958898 DOI: 10.3390/life13020294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 01/10/2023] [Accepted: 01/19/2023] [Indexed: 01/27/2023] Open
Abstract
This study investigates inclusion behavior of amylose towards, poly(β-propiolactone) (PPL), that is a hydrophobic polyester, via the vine-twining process in glucan phosphorylase (GP, isolated from thermophilic bacteria, Aquifex aeolicus VF5)-catalyzed enzymatic polymerization. As a result of poor dispersibility of PPL in sodium acetate buffer, the enzymatically produced amylose by GP catalysis incompletely included PPL in the buffer media under the general vine-twining polymerization conditions. Alternatively, we employed an ethyl acetate-sodium acetate buffer emulsion system with dispersing PPL as the media for vine-twining polymerization. Accordingly, the GP (from thermophilic bacteria)-catalyzed enzymatic polymerization of an α-d-glucose 1-phosphate monomer from a maltoheptaose primer was performed at 50 °C for 48 h in the prepared emulsion to efficiently form the inclusion complex. The powder X-ray diffraction profile of the precipitated product suggested that the amylose-PPL inclusion complex was mostly produced in the above system. The 1H NMR spectrum of the product also supported the inclusion complex structure, where a calculation based on an integrated ratio of signals indicated an almost perfect inclusion of PPL in the amylosic cavity. The prevention of crystallization of PPL in the product was suggested by IR analysis, because it was surrounded by the amylosic chains due to the inclusion complex structure.
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Inclusion behavior of amylose toward hydrophobic polyester, poly(γ-butyrolactone), in vine-twining polymerization. Colloid Polym Sci 2022. [DOI: 10.1007/s00396-022-04989-9] [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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Kumar K, Loos K. Morphological Characteristics of Amylose‐Poly(tetrahydrofuran) Inclusion Complexes Depending on Temperature and Concentration. MACROMOL CHEM PHYS 2020. [DOI: 10.1002/macp.202000122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Kamlesh Kumar
- Macromolecular Chemistry and New Polymeric MaterialsZernike Institute for Advanced MaterialsUniversity of Groningen Nijenborgh 4 Groningen AG 9747 The Netherlands
- Ubiquitous Analytical TechniquesCSIR‐Central Scientific Instruments Organization Sector‐30 Chandigarh 160030 India
| | - Katja Loos
- Macromolecular Chemistry and New Polymeric MaterialsZernike Institute for Advanced MaterialsUniversity of Groningen Nijenborgh 4 Groningen AG 9747 The Netherlands
- Ubiquitous Analytical TechniquesCSIR‐Central Scientific Instruments Organization Sector‐30 Chandigarh 160030 India
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Kadokawa JI, Orio S, Yamamoto K. Formation of microparticles from amylose-grafted poly(γ-glutamic acid) networks obtained by thermostable phosphorylase-catalyzed enzymatic polymerization. RSC Adv 2019; 9:16176-16182. [PMID: 35521363 PMCID: PMC9064375 DOI: 10.1039/c9ra02999k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Accepted: 05/16/2019] [Indexed: 11/21/2022] Open
Abstract
Amylose is a natural polysaccharide with helical conformation, which spontaneously forms water-insoluble assemblies, such as double helixes and inclusion complexes, at ambient temperatures in aqueous media, whereas it is synthesized as a water-soluble single chain by thermostable phosphorylase-catalyzed enzymatic polymerization at elevated temperatures in aqueous buffer solvents. In this study, we investigated the enzymatic polymerization at 80 °C using a primer-grafted poly(γ-glutamic acid) (PGA) in the presence or absence of poly(l-lactic acid) (PLLA) as a guest polymer for inclusion by amylose. Consequently, the produced amylose-grafted PGAs formed microparticles by cooling the mixtures at room temperature after the enzymatic polymerization in either the presence or the absence of PLLA. The particle sizes, which were evaluated by SEM measurement, were dependent on the feed ratios of PLLA. Based on the characterization results by the powder X-ray diffraction, IR, and dynamic light scattering measurements, a mechanism for the formation of the microparticles in the present system is proposed.
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Affiliation(s)
- Jun-Ichi Kadokawa
- Department of Chemistry, Biotechnology, and Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University 1-21-40 Korimoto Kagoshima 890-0065 Japan
| | - Saya Orio
- Department of Chemistry, Biotechnology, and Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University 1-21-40 Korimoto Kagoshima 890-0065 Japan
| | - Kazuya Yamamoto
- Department of Chemistry, Biotechnology, and Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University 1-21-40 Korimoto Kagoshima 890-0065 Japan
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Kadokawa JI, Yano K, Orio S, Yamamoto K. Formation of Supramolecular Soft Materials from Amylosic Inclusion Complexes with Designed Guest Polymers Obtained by Vine-Twining Polymerization. ACS OMEGA 2019; 4:6331-6338. [PMID: 31459773 PMCID: PMC6649246 DOI: 10.1021/acsomega.9b00238] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Accepted: 03/27/2019] [Indexed: 05/18/2023]
Abstract
Amylose forms supramolecular inclusion complexes with polymeric guests in the phosphorylase-catalyzed enzymatic polymerization field, so-called "vine-twining polymerization". However, such inclusion complexes have not exhibited specific properties and processability as functional supramolecular materials. In this study, we found that amylosic inclusion complexes, which were obtained by vine-twining polymerization using a designed guest polymer, that is, an amphiphilic triblock copolymer poly(2-methyl-2-oxazoline-block-tetrahydrofuran-block-2-methyl-2-oxazoline), exhibited gel and film formation properties. The characterization results of the products suggested that enzymatically elongated amylose chains complexed with the polytetrahydrofuran block in the triblock copolymer. Accordingly, the outer poly(2-methyl-2-oxazoline) blocks constructed hydrophilic spaces among the inclusion complex segments. Furthermore, the presence of such outer blocks affected the lower regularity of crystalline alignment among the inclusion complex segments in the products. Such higher-order structures probably induced the formation of supramolecular soft materials, such as gels and films.
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Tanaka T, Tsutsui A, Tanaka K, Yamamoto K, Kadokawa JI. Evaluation of Stability of Amylose Inclusion Complexes Depending on Guest Polymers and Their Application to Supramolecular Polymeric Materials. Biomolecules 2017; 7:E28. [PMID: 28294979 PMCID: PMC5372740 DOI: 10.3390/biom7010028] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Revised: 03/09/2017] [Accepted: 03/09/2017] [Indexed: 02/07/2023] Open
Abstract
This paper describes the evaluation of the stability of amylose-polymer inclusion complexes under solution state in dimethyl sulfoxide (DMSO) depending on guest polymers. The three complexes were prepared by the vine-twining polymerization method using polytetrahydrofuran (PTHF), poly(ε-caprolactone) (PCL), and poly(l-lactide) (PLLA) as guest polymers. The stability investigation was conducted at desired temperatures (25, 30, 40, 60 °C) in DMSO solutions of the complexes. Consequently, the amylose-PTHF inclusion complex was dissociated at 25 °C, while the other complexes were stable under the same conditions. When the temperatures were elevated, the amylose-PCL and amylose-PLLA complexes were dissociated at 40 and 60 °C, respectively. We also found that amylose inclusion supramolecular polymers which were prepared by the vine-twining polymerization using primer-guest conjugates formed films by the acetylation of amylose segments. The film from acetylated amylose-PLLA supramolecular polymer had higher storage modulus than that from acetylated amylose-PTHF supramolecular polymer, as a function of temperature.
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Affiliation(s)
- Tomonari Tanaka
- Department of Biobased Materials Science, Graduate School of Science and Technology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
| | - Atsushi Tsutsui
- Department of Biobased Materials Science, Graduate School of Science and Technology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
| | - Kazuya Tanaka
- Department of Chemistry, Biotechnology, and Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 860-0065, Japan.
| | - Kazuya Yamamoto
- Department of Chemistry, Biotechnology, and Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 860-0065, Japan.
| | - Jun-Ichi Kadokawa
- Department of Chemistry, Biotechnology, and Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 860-0065, Japan.
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Preparation and characterizations of all-biodegradable supramolecular hydrogels through formation of inclusion complexes of amylose. Polym Bull (Berl) 2017. [DOI: 10.1007/s00289-017-1972-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Kadokawa JI. Precision Synthesis of Functional Polysaccharide Materials by Phosphorylase-Catalyzed Enzymatic Reactions. Polymers (Basel) 2016; 8:E138. [PMID: 30979227 PMCID: PMC6432375 DOI: 10.3390/polym8040138] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 01/11/2016] [Accepted: 01/13/2016] [Indexed: 01/29/2023] Open
Abstract
In this review article, the precise synthesis of functional polysaccharide materials using phosphorylase-catalyzed enzymatic reactions is presented. This particular enzymatic approach has been identified as a powerful tool in preparing well-defined polysaccharide materials. Phosphorylase is an enzyme that has been employed in the synthesis of pure amylose with a precisely controlled structure. Similarly, using a phosphorylase-catalyzed enzymatic polymerization, the chemoenzymatic synthesis of amylose-grafted heteropolysaccharides containing different main-chain polysaccharide structures (e.g., chitin/chitosan, cellulose, alginate, xanthan gum, and carboxymethyl cellulose) was achieved. Amylose-based block, star, and branched polymeric materials have also been prepared using this enzymatic polymerization. Since phosphorylase shows a loose specificity for the recognition of substrates, different sugar residues have been introduced to the non-reducing ends of maltooligosaccharides by phosphorylase-catalyzed glycosylations using analog substrates such as α-d-glucuronic acid and α-d-glucosamine 1-phosphates. By means of such reactions, an amphoteric glycogen and its corresponding hydrogel were successfully prepared. Thermostable phosphorylase was able to tolerate a greater variance in the substrate structures with respect to recognition than potato phosphorylase, and as a result, the enzymatic polymerization of α-d-glucosamine 1-phosphate to produce a chitosan stereoisomer was carried out using this enzyme catalyst, which was then subsequently converted to the chitin stereoisomer by N-acetylation. Amylose supramolecular inclusion complexes with polymeric guests were obtained when the phosphorylase-catalyzed enzymatic polymerization was conducted in the presence of the guest polymers. Since the structure of this polymeric system is similar to the way that a plant vine twines around a rod, this polymerization system has been named "vine-twining polymerization". Through this approach, amylose supramolecular network materials were fabricated using designed graft copolymers. Furthermore, supramolecular inclusion polymers were formed by vine-twining polymerization using primer⁻guest conjugates.
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Affiliation(s)
- Jun-Ichi Kadokawa
- Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan.
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Gotanda R, Yamamoto K, Kadokawa JI. Amylose Stereoselectively Includes Poly(d-alanine) to Form Inclusion Complex in Vine-Twining Polymerization: A Novel Saccharide-Peptide Supramolecular Conjugate. MACROMOL CHEM PHYS 2016. [DOI: 10.1002/macp.201500498] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Ryuya Gotanda
- Department of Chemistry, Biotechnology, and Chemical Engineering; Graduate School of Science and Engineering; Kagoshima University; 1-21-40 Korimoto Kagoshima 890-0065 Japan
| | - Kazuya Yamamoto
- Department of Chemistry, Biotechnology, and Chemical Engineering; Graduate School of Science and Engineering; Kagoshima University; 1-21-40 Korimoto Kagoshima 890-0065 Japan
| | - Jun-ichi Kadokawa
- Department of Chemistry, Biotechnology, and Chemical Engineering; Graduate School of Science and Engineering; Kagoshima University; 1-21-40 Korimoto Kagoshima 890-0065 Japan
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Shoda SI, Uyama H, Kadokawa JI, Kimura S, Kobayashi S. Enzymes as Green Catalysts for Precision Macromolecular Synthesis. Chem Rev 2016; 116:2307-413. [PMID: 26791937 DOI: 10.1021/acs.chemrev.5b00472] [Citation(s) in RCA: 303] [Impact Index Per Article: 37.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The present article comprehensively reviews the macromolecular synthesis using enzymes as catalysts. Among the six main classes of enzymes, the three classes, oxidoreductases, transferases, and hydrolases, have been employed as catalysts for the in vitro macromolecular synthesis and modification reactions. Appropriate design of reaction including monomer and enzyme catalyst produces macromolecules with precisely controlled structure, similarly as in vivo enzymatic reactions. The reaction controls the product structure with respect to substrate selectivity, chemo-selectivity, regio-selectivity, stereoselectivity, and choro-selectivity. Oxidoreductases catalyze various oxidation polymerizations of aromatic compounds as well as vinyl polymerizations. Transferases are effective catalysts for producing polysaccharide having a variety of structure and polyesters. Hydrolases catalyzing the bond-cleaving of macromolecules in vivo, catalyze the reverse reaction for bond forming in vitro to give various polysaccharides and functionalized polyesters. The enzymatic polymerizations allowed the first in vitro synthesis of natural polysaccharides having complicated structures like cellulose, amylose, xylan, chitin, hyaluronan, and chondroitin. These polymerizations are "green" with several respects; nontoxicity of enzyme, high catalyst efficiency, selective reactions under mild conditions using green solvents and renewable starting materials, and producing minimal byproducts. Thus, the enzymatic polymerization is desirable for the environment and contributes to "green polymer chemistry" for maintaining sustainable society.
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Affiliation(s)
- Shin-ichiro Shoda
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University , Aoba-ku, Sendai 980-8579, Japan
| | - Hiroshi Uyama
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University , Yamadaoka, Suita 565-0871, Japan
| | - Jun-ichi Kadokawa
- Department of Chemistry, Biotechnology, and Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University , Korimoto, Kagoshima 890-0065, Japan
| | - Shunsaku Kimura
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University , Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Shiro Kobayashi
- Center for Fiber & Textile Science, Kyoto Institute of Technology , Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
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Tanaka T, Gotanda R, Tsutsui A, Sasayama S, Yamamoto K, Kimura Y, Kadokawa JI. Synthesis and gel formation of hyperbranched supramolecular polymer by vine-twining polymerization using branched primer–guest conjugate. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.07.022] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Rachmawati R, de Gier HD, Woortman AJJ, Loos K. Synthesis of Telechelic and Three-Arm Polytetrahydrofuran-block-amylose. MACROMOL CHEM PHYS 2015. [DOI: 10.1002/macp.201500018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Rachmawati Rachmawati
- Zernike Institute for Advanced Materials; University of Groningen; Nijenborgh 4 9747AG Groningen The Netherlands
| | - Hilde D. de Gier
- Zernike Institute for Advanced Materials; University of Groningen; Nijenborgh 4 9747AG Groningen The Netherlands
| | - Albert J. J. Woortman
- Zernike Institute for Advanced Materials; University of Groningen; Nijenborgh 4 9747AG Groningen The Netherlands
| | - Katja Loos
- Zernike Institute for Advanced Materials; University of Groningen; Nijenborgh 4 9747AG Groningen The Netherlands
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Rachmawati R, Woortman AJJ, Kumar K, Loos K. Inclusion Complexes Between Polytetrahydrofuran-b-Amylose Block Copolymers and Polytetrahydrofuran Chains. Macromol Biosci 2015; 15:812-28. [DOI: 10.1002/mabi.201400515] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2014] [Revised: 01/17/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Rachmawati Rachmawati
- Zernike Institute for Advanced Materials; University of Groningen; Nijenborgh 4 9747AG Groningen The Netherlands
| | - Albert J. J. Woortman
- Zernike Institute for Advanced Materials; University of Groningen; Nijenborgh 4 9747AG Groningen The Netherlands
| | - Kamlesh Kumar
- Zernike Institute for Advanced Materials; University of Groningen; Nijenborgh 4 9747AG Groningen The Netherlands
| | - Katja Loos
- Zernike Institute for Advanced Materials; University of Groningen; Nijenborgh 4 9747AG Groningen The Netherlands
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Tanaka T, Sasayama S, Yamamoto K, Kimura Y, Kadokawa JI. Evaluating Relative Chain Orientation of Amylose and Poly(l
-lactide) in Inclusion Complexes Formed by Vine-Twining Polymerization Using Primer-Guest Conjugates. MACROMOL CHEM PHYS 2015. [DOI: 10.1002/macp.201400603] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Tomonari Tanaka
- Department of Biobased Materials Science; Graduate School of Science and Technology; Kyoto Institute of Technology; Matsugasaki Sakyo-ku, Kyoto 606-8585 Japan
| | - Shota Sasayama
- Department of Chemistry; Biotechnology and Chemical Engineering; Graduate School of Science and Engineering; Kagoshima University; 1-21-40 Korimoto Kagoshima 890-0065 Japan
| | - Kazuya Yamamoto
- Department of Chemistry; Biotechnology and Chemical Engineering; Graduate School of Science and Engineering; Kagoshima University; 1-21-40 Korimoto Kagoshima 890-0065 Japan
| | - Yoshiharu Kimura
- Department of Biobased Materials Science; Graduate School of Science and Technology; Kyoto Institute of Technology; Matsugasaki Sakyo-ku, Kyoto 606-8585 Japan
| | - Jun-ichi Kadokawa
- Department of Chemistry; Biotechnology and Chemical Engineering; Graduate School of Science and Engineering; Kagoshima University; 1-21-40 Korimoto Kagoshima 890-0065 Japan
- Research Center for Environmentally Friendly Materials Engineering; Muroran Institute of Technology; 27-1 Mizumoto-cho Muroran Hokkaido 050-8585 Japan
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Tanaka T, Tsutsui A, Gotanda R, Sasayama S, Yamamoto K, Kadokawa JI. Synthesis of Amylose-Polyether Inclusion Supramolecular Polymers by Vine-twining Polymerization Using Maltoheptaose-functionalized Poly(tetrahydrofuran) as a Primer-guest Conjugate. J Appl Glycosci (1999) 2015. [DOI: 10.5458/jag.jag.jag-2015_016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Affiliation(s)
- Tomonari Tanaka
- Department of Biobased Materials Science, Graduate School of Science and Technology, Kyoto Institute of Technology
| | - Atsushi Tsutsui
- Department of Biobased Materials Science, Graduate School of Science and Technology, Kyoto Institute of Technology
| | - Ryuya Gotanda
- Department of Chemistry, Biotechnology and Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University
| | - Shota Sasayama
- Department of Chemistry, Biotechnology and Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University
| | - Kazuya Yamamoto
- Department of Chemistry, Biotechnology and Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University
| | - Jun-ichi Kadokawa
- Department of Chemistry, Biotechnology and Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University
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Kadokawa JI, Tanaka K, Hatanaka D, Yamamoto K. Preparation of multiformable supramolecular gels through helical complexation by amylose in vine-twining polymerization. Polym Chem 2015. [DOI: 10.1039/c5py00753d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Supramolecular hydrogels with macroscopic interfacial healing behavior were obtained through helical complexation by amylose in vine-twining polymerization using poly(γ-glutamic acid-graft-ε-caprolactone), which were further converted into cryo- and ion gels.
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Affiliation(s)
- Jun-ichi Kadokawa
- Department of Chemistry
- Biotechnology
- and Chemical Engineering
- Graduate School of Science and Engineering
- Kagoshima University
| | - Kazuya Tanaka
- Department of Chemistry
- Biotechnology
- and Chemical Engineering
- Graduate School of Science and Engineering
- Kagoshima University
| | - Daisuke Hatanaka
- Department of Chemistry
- Biotechnology
- and Chemical Engineering
- Graduate School of Science and Engineering
- Kagoshima University
| | - Kazuya Yamamoto
- Department of Chemistry
- Biotechnology
- and Chemical Engineering
- Graduate School of Science and Engineering
- Kagoshima University
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