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Tsuda A, Ozawa N, Muranaka R, Kuwahara T, Matsune A, Liang F. Photo-on-Demand In Situ Phosgenation Reactions That Cross Three Phases of a Heterogeneous Solution of Chloroform and Aqueous NaOH. ACS OMEGA 2023; 8:27802-27810. [PMID: 37546672 PMCID: PMC10398853 DOI: 10.1021/acsomega.3c04290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 06/30/2023] [Indexed: 08/08/2023]
Abstract
Here, we report a novel photo-on-demand in situ phosgenation reaction that crosses three phases of a heterogeneous solution of chloroform (CHCl3) and aqueous NaOH containing an aryl alcohol or amine. This reaction system enables the safe, convenient, and inexpensive synthesis of carbonate esters, polycarbonates, and N-substituted ureas from aryl alcohols, aryl diols, and primary/secondary amines, respectively, on a practical scale and with good yield. The photochemical oxidation of CHCl3 to phosgene (COCl2) occurs upon irradiation with UV light from a low-pressure mercury lamp of both the gas and liquid phases of the reaction system under O2 bubbling of the vigorously stirred sample solution. The following reaction mechanisms are suggested: The aryl alcohol reacts in situ with the generated COCl2 at the interfaces of the organic/aqueous phases and aqueous/gas phases, in competition with the decomposition of COCl2 due to hydrolysis. Nucleophilicity and hydrophilicity are enhanced by the formation of aryl alkoxide ion through the reaction with NaOH, whereas the reaction of amine proceeds through neutralization of the generated HCl by the aqueous NaOH.
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2
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Soto ER, Rus F, Mirza Z, Ostroff GR. Yeast Particles for Encapsulation of Terpenes and Essential Oils. Molecules 2023; 28:molecules28052273. [PMID: 36903519 PMCID: PMC10005402 DOI: 10.3390/molecules28052273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 02/22/2023] [Accepted: 02/25/2023] [Indexed: 03/05/2023] Open
Abstract
Terpenes and essential oils are materials of great commercial use due to their broad spectra of antibacterial, antifungal, membrane permeation enhancement and antioxidant biological properties, as well as for their use as flavors and fragrances. Yeast particles (YPs) are 3-5 µm hollow and porous microspheres, a byproduct of some food-grade yeast (Saccharomyces cerevisiae) extract manufacturing processes, that have been used for the encapsulation of terpenes and essential oils with high payload loading capacity (up to 500% weight) and efficiency, providing stability and sustained-release properties. This review focuses on encapsulation approaches for the preparation of YP-terpene and essential oil materials that have a wide range of potential agricultural, food and pharmaceutical applications.
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Hatsumura S, Hashimoto Y, Hosokawa S, Nagao A, Eda K, Harada H, Ishitsuka K, Okazoe T, Tsuda A. Reactivity and Product Selectivity of Fluoroalkyl Carbonates in Substitution Reactions with Primary Alcohols and Amines. J Org Chem 2022; 87:11572-11582. [PMID: 35981240 DOI: 10.1021/acs.joc.2c01180] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The present study reports a systematic investigation of the substitution reactions of a series of symmetric and unsymmetric fluoroalkyl carbonates with primary alcohols or amines. The reactivity of the haloalkyl carbonate depends mainly on the electrophilicity and steric crowdedness of the carbonyl group and the leaving ability of the haloalkyl alcohols. Diethyl carbonate as a reference substrate showed no reaction with the alcohol or amine. However, bis(2,2,2-trifluoroethyl) carbonate [(F3-EtO)2CO] having electron-withdrawing trifluoroethyl groups enabled substitution reactions, with relatively higher reactivities to those for diphenyl carbonate [(PhO)2CO]. Furthermore, (F6-iPrO)2CO, bearing two sets of hexafluoroisopropyl groups, showed dramatic acceleration of the reactions, in which the observed reactivities were similar to those for bis(perfluorophenyl) carbonate [(F5-PhO)2CO]. The electrophilicity of the carbonyl group and the leaving ability of the alcohols in the series of haloalkyl carbonates were found to be correlated with the wavenumbers of their carbonyl groups in IR spectra and pKa for the eliminated alcohols, respectively. Since the eliminated fluoroalkyl alcohols exhibit weak affinity with the organic products and have lower boiling points owing to a characteristic property of the fluoroalkyl group, they could be readily removed from the product by simple evaporation below 100 °C with or without reduced pressure.
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Affiliation(s)
- Shuto Hatsumura
- Department of Chemistry, Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Yuka Hashimoto
- Department of Chemistry, Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Sasuga Hosokawa
- Department of Chemistry, Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Akihiro Nagao
- Department of Chemistry, Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Kazuo Eda
- Department of Chemistry, Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Hirofumi Harada
- Innovative Technology Laboratories, AGC Inc, 1-1 Suehiro-cho Tsurumi-ku, Yokohama City, Kanagawa 230-0045, Japan
| | - Kei Ishitsuka
- Innovative Technology Laboratories, AGC Inc, 1-1 Suehiro-cho Tsurumi-ku, Yokohama City, Kanagawa 230-0045, Japan
| | - Takashi Okazoe
- Materials Integration Laboratories, AGC Inc, 1-1 Suehiro-cho Tsurumi-ku, Yokohama City, Kanagawa 230-0045, Japan
| | - Akihiko Tsuda
- Department of Chemistry, Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
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4
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Barman R, Ray D, Aswal VK, Ghosh S. Chain-folding regulated self-assembly, outstanding bactericidal activity and biofilm eradication by biomimetic amphiphilic polymers. Polym Chem 2022. [DOI: 10.1039/d2py00625a] [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
Chain-folding regulated hierarchical self-assembly of cationic host defense peptide mimicking amphiphilic polyurethanes exhibit excellent antibacterial activity and biofilm killing.
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Affiliation(s)
- Ranajit Barman
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Kolkata, Pin-700032, India
| | - Debes Ray
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - V. K. Aswal
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Suhrit Ghosh
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Kolkata, Pin-700032, India
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5
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Gomez-Lopez A, Elizalde F, Calvo I, Sardon H. Trends in non-isocyanate polyurethane (NIPU) development. Chem Commun (Camb) 2021; 57:12254-12265. [PMID: 34709246 DOI: 10.1039/d1cc05009e] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The transition towards safer and more sustainable production of polymers has led to a growing body of academic research into non-isocyanate polyurethanes (NIPUs) as potential replacements for conventional, isocyanate-based polyurethane materials. This perspective article focuses on the opportunities and current limitations of NIPUs produced by the reaction between biobased cyclic carbonates with amines, which offers an interesting pathway to renewable NIPUs. While it was initially thought that due to the similarities in the chemical structure, NIPUs could be used to directly replace conventional polyurethanes (PU), this has proven to be more challenging to achieve in practice. As a result, and in spite of the vast amount of academic research into this topic, the market size of NIPUs remains negligible. In this perspective, we will emphasize the main limitations of NIPUs in comparison to conventional PUs and the most significant advances made by others and us to overcome these limitations. Finally, we provide our personal view of where research should be directed to promote the transition from the academic to the industrial sector.
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Affiliation(s)
- Alvaro Gomez-Lopez
- POLYMAT and Department of Polymers and Advanced Materials: Physics, Chemistry and Technology, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizabal 3, 20018, Donostia-San Sebastián, Spain.
| | - Fermin Elizalde
- POLYMAT and Department of Polymers and Advanced Materials: Physics, Chemistry and Technology, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizabal 3, 20018, Donostia-San Sebastián, Spain.
| | - Iñigo Calvo
- ORIBAY Group Automotive S.L. R&D Department, Portuetxe bidea 18, 20018, Donostia-San Sebastián, Spain
| | - Haritz Sardon
- POLYMAT and Department of Polymers and Advanced Materials: Physics, Chemistry and Technology, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizabal 3, 20018, Donostia-San Sebastián, Spain.
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Shen ZY, Mei QY, Liu Y, Zheng LC, Li CC, Liu JJ, Xiao YN, Wu SH, Zhang B. A Non-isocyanate Route to Poly(ester urethane) with High Molecular Weight: Synthesis and Effect of Chemical Structures of Polyester-diol. CHINESE JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1007/s10118-021-2645-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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7
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Hashimoto Y, Hosokawa S, Liang F, Suzuki Y, Dai N, Tana G, Eda K, Kakiuchi T, Okazoe T, Harada H, Tsuda A. Photo-on-Demand Base-Catalyzed Phosgenation Reactions with Chloroform: Synthesis of Arylcarbonate and Halocarbonate Esters. J Org Chem 2021; 86:9811-9819. [PMID: 34182754 DOI: 10.1021/acs.joc.1c01210] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Carbonate esters are utilized as solvents and reagents for C1 building blocks in organic synthesis. This study reports a novel photo-on-demand in situ synthesis of carbonate esters with CHCl3 solutions containing a mixture of an aromatic or haloalkyl alcohol having relatively high acidity, and an organic base. We found that the acid-base interaction of the alcohol and base in the CHCl3 solution plays a key role in enabling the photochemical reaction. This reaction allows practical syntheses of diphenyl carbonate derivatives, haloalkyl carbonates, and polycarbonates, which are important chemicals and materials in industry.
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Affiliation(s)
- Yuka Hashimoto
- Department of Chemistry, Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Sasuga Hosokawa
- Department of Chemistry, Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Fengying Liang
- Department of Chemistry, Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Yuto Suzuki
- Department of Chemistry, Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Namin Dai
- Department of Chemistry, Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Gegen Tana
- Department of Chemistry, Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Kazuo Eda
- Department of Chemistry, Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Toshifumi Kakiuchi
- Innovative Technology Laboratories, AGC Inc., Suehiro 1-1 Tsurumi-ku, Yokohama City, Kanagawa 230-0045, Japan
| | - Takashi Okazoe
- Materials Integration Laboratories, AGC Inc., Suehiro 1-1 Tsurumi-ku, Yokohama City, Kanagawa 230-0045, Japan
| | - Hidefumi Harada
- Tokyo Research Laboratory, Mitsubishi Gas Chemical Company, Inc., Nijyuku 6-1-1 Katsushika-ku, Tokyo 125-8601, Japan
| | - Akihiko Tsuda
- Department of Chemistry, Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
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Multifunctional poly(quaternary ammonium)/Fe3O4 composite nanogels for integration of antibacterial and degradable magnetic redox-responsive properties. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126235] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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9
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Subjakova V, Oravczova V, Hianik T. Polymer Nanoparticles and Nanomotors Modified by DNA/RNA Aptamers and Antibodies in Targeted Therapy of Cancer. Polymers (Basel) 2021; 13:341. [PMID: 33494545 PMCID: PMC7866063 DOI: 10.3390/polym13030341] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 01/14/2021] [Accepted: 01/16/2021] [Indexed: 12/14/2022] Open
Abstract
Polymer nanoparticles and nano/micromotors are novel nanostructures that are of increased interest especially in the diagnosis and therapy of cancer. These structures are modified by antibodies or nucleic acid aptamers and can recognize the cancer markers at the membrane of the cancer cells or in the intracellular side. They can serve as a cargo for targeted transport of drugs or nucleic acids in chemo- immuno- or gene therapy. The various mechanisms, such as enzyme, ultrasound, magnetic, electrical, or light, served as a driving force for nano/micromotors, allowing their transport into the cells. This review is focused on the recent achievements in the development of polymer nanoparticles and nano/micromotors modified by antibodies and nucleic acid aptamers. The methods of preparation of polymer nanoparticles, their structure and properties are provided together with those for synthesis and the application of nano/micromotors. The various mechanisms of the driving of nano/micromotors such as chemical, light, ultrasound, electric and magnetic fields are explained. The targeting drug delivery is based on the modification of nanostructures by receptors such as nucleic acid aptamers and antibodies. Special focus is therefore on the method of selection aptamers for recognition cancer markers as well as on the comparison of the properties of nucleic acid aptamers and antibodies. The methods of immobilization of aptamers at the nanoparticles and nano/micromotors are provided. Examples of applications of polymer nanoparticles and nano/micromotors in targeted delivery and in controlled drug release are presented. The future perspectives of biomimetic nanostructures in personalized nanomedicine are also discussed.
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Affiliation(s)
| | | | - Tibor Hianik
- Department of Nuclear Physics and Biophysics, Faculty of Mathematics, Physics and Informatics, Comenius University, Mlynska dolina F1, 842 48 Bratislava, Slovakia; (V.S.); (V.O.)
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10
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Preparation of degradable magnetic temperature- and redox-responsive polymeric/Fe3O4 nanocomposite nanogels in inverse miniemulsions for loading and release of 5-fluorouracil. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.124363] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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11
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Bizet B, Grau É, Cramail H, Asua JM. Water-based non-isocyanate polyurethane-ureas (NIPUUs). Polym Chem 2020. [DOI: 10.1039/d0py00427h] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review aims at discussing the achievements and the remaining challenges in the development of water-soluble NIPUUs, NIPUUs-based hydrogels and water-borne NIPUU dispersions.
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Affiliation(s)
- Boris Bizet
- LCPO – UMR 5629
- Université de Bordeaux – CNRS – Bordeaux INP
- 33607 Pessac
- France
- POLYMAT
| | - Étienne Grau
- LCPO – UMR 5629
- Université de Bordeaux – CNRS – Bordeaux INP
- 33607 Pessac
- France
| | - Henri Cramail
- LCPO – UMR 5629
- Université de Bordeaux – CNRS – Bordeaux INP
- 33607 Pessac
- France
| | - José M. Asua
- POLYMAT
- University of the Basque Country UPV/EHU
- Joxe Mari Korta Center
- 20018 Donostia-San Sebastián
- Spain
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12
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Sun J, Rust T, Kuckling D. Light-Responsive Serinol-Based Polyurethane Nanocarrier for Controlled Drug Release. Macromol Rapid Commun 2019; 40:e1900348. [PMID: 31553503 DOI: 10.1002/marc.201900348] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 09/11/2019] [Indexed: 12/13/2022]
Abstract
In the present work, a new and facile strategy for the synthesis of light-responsive polyurethanes (LrPUs) based on serinol with o-nitrobenzyl pendent groups is developed. Stable monodisperse nanoparticles from these LrPUs can be formulated reproducibly in a simple manner, which is shown by dynamic light scattering (DLS) measurements. Upon irradiation with UV light, both polymers and nanoparticles undergo rapid degradation, which is investigated by DLS, scanning electron microscopy, size exclusion chromatography, and UV-vis spectroscopy. The nanoparticles are also employed for the encapsulation of the model drug Nile Red, and by exposure to UV light, a burst release of the payload is detected via fluorescence spectroscopy. This strategy can be easily applied to the straightforward synthesis of various new serinol-based monomers with different stimuli-responsive properties and therefore expand the family of biodegradable polymers.
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Affiliation(s)
- Jingjiang Sun
- Key Laboratory of Rubber-plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering, Qingdao University of Science and Technology, Zhengzhou Rd. 53, Qingdao, CN-266042, China
- Department of Chemistry, Paderborn University, Warburger Str. 100, D-33098, Paderborn, Germany
| | - Tarik Rust
- Department of Chemistry, Paderborn University, Warburger Str. 100, D-33098, Paderborn, Germany
| | - Dirk Kuckling
- Department of Chemistry, Paderborn University, Warburger Str. 100, D-33098, Paderborn, Germany
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13
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Quérette T, Fleury E, Sintes-Zydowicz N. Non-isocyanate polyurethane nanoparticles prepared by nanoprecipitation. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.03.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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14
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15
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Xie F, Zhang T, Bryant P, Kurusingal V, Colwell JM, Laycock B. Degradation and stabilization of polyurethane elastomers. Prog Polym Sci 2019. [DOI: 10.1016/j.progpolymsci.2018.12.003] [Citation(s) in RCA: 143] [Impact Index Per Article: 28.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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16
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Xu W, Liu B, Cai X, Zhang M, Zhang XH, Yu P. Fluorescent poly(hydroxyurethane): Biocompatibility evaluation and selective detection of Fe(III). J Appl Polym Sci 2018. [DOI: 10.1002/app.46723] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Wan Xu
- Department of Toxicology, School of Public Health; Zhejiang University; Hangzhou 310058 China
| | - Bin Liu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering; Zhejiang University; Hangzhou 310027 China
| | - Xiaobo Cai
- Department of Toxicology, School of Public Health; Zhejiang University; Hangzhou 310058 China
| | - Mohan Zhang
- Department of Toxicology, School of Public Health; Zhejiang University; Hangzhou 310058 China
| | - Xing-Hong Zhang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering; Zhejiang University; Hangzhou 310027 China
| | - Peilin Yu
- Department of Toxicology, School of Public Health; Zhejiang University; Hangzhou 310058 China
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17
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Preparation, characterization and in vitro release of β-galactosidase loaded polyelectrolyte nanoparticles. Int J Biol Macromol 2018; 115:1-9. [PMID: 29649531 DOI: 10.1016/j.ijbiomac.2018.04.030] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Revised: 04/06/2018] [Accepted: 04/06/2018] [Indexed: 01/07/2023]
Abstract
Improving encapsulation efficacy (EE) and bioavailability of β-galactosidase (β-gal) is always a challenge due to its fragility. In this work, β-gal loaded β-chitosan (CS) nanoparticles (NPs) were successfully prepared based on ionic gelation technique and electrostatic attraction for improving its EE and in vitro releasing capacity. The particle size of β-gal loaded low and high molecular weight (LMW and HMW) β-CS NPs reached 584.37 and 652.46nm, with Zeta-potential (ZP) of 26.37 and 16.46mV under the optimal conditions, respectively. In vitro release study conducted at pH4.5 and 7.4 showed that β-gal loaded LMW and HMW β-CS NPs with EE of 68.32 and 58.64% sustained the release of the β-gal over 12h. The β-gal incorporated into β-CS NPs was confirmed with the results of physicochemical and structural properties of β-gal loaded β-CS NPs, and prepared NPs had hardly any cytotoxicity in the range of 0.1-1.0mg/mL. The results indicated that β-gal loaded β-CS NPs could serve as non-toxic delivery carriers for the treatment of lactose intolerance.
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18
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Ma S, van Heeswijk EPA, Noordover BAJ, Sablong RJ, van Benthem RATM, Koning CE. Isocyanate-Free Approach to Water-Borne Polyurea Dispersions and Coatings. CHEMSUSCHEM 2018; 11:149-158. [PMID: 29116685 DOI: 10.1002/cssc.201701930] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 11/07/2017] [Indexed: 06/07/2023]
Abstract
Here, an isocyanate-free approach to produce polyureas from diamines and dicarbamates as monomers is reported. A side reaction limiting the molecular weight during the diamine/ dicarbamate polymerization, that is, N-alkylation of amine end groups, is investigated. Mitigation of the N-alkylation, either by enhancing the carbamate aminolysis rate or by substitution of dimethylcarbamates with more sterically hindered diethylcarbamates, affords polyureas with sufficiently high molecular weights to assure satisfactory mechanical properties. Stable polyurea dispersions with polyamines as internal dispersing agents are prepared, and the properties of the corresponding coatings are evaluated.
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Affiliation(s)
- Shuang Ma
- Laboratory of Physical Chemistry, Eindhoven University of Technology, P.O. Box 513, Eindhoven, 5600, MB, The Netherlands
| | - Ellen P A van Heeswijk
- Laboratory of Physical Chemistry, Eindhoven University of Technology, P.O. Box 513, Eindhoven, 5600, MB, The Netherlands
| | - Bart A J Noordover
- Laboratory of Physical Chemistry, Eindhoven University of Technology, P.O. Box 513, Eindhoven, 5600, MB, The Netherlands
| | - Rafaël J Sablong
- Laboratory of Physical Chemistry, Eindhoven University of Technology, P.O. Box 513, Eindhoven, 5600, MB, The Netherlands
- Polymer Technology Group Eindhoven B.V. (PTG/e B.V.), P.O. Box 6284, Eindhoven, 5600 HG, The Netherlands
| | - Rolf A T M van Benthem
- Laboratory of Physical Chemistry, Eindhoven University of Technology, P.O. Box 513, Eindhoven, 5600, MB, The Netherlands
- DSM Materials Science Center, Urmonderbaan 22, Geleen, 6167 RG, The Netherlands
| | - Cor E Koning
- Laboratory of Physical Chemistry, Eindhoven University of Technology, P.O. Box 513, Eindhoven, 5600, MB, The Netherlands
- DSM Coating Resins, Ceintuurbaan 5, Zwolle, 8022 AW, The Netherlands
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19
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Zabalov MV, Tiger RP. Specificities of application of the supermolecule method to the calculation of reaction mechanisms in a protonodonor medium. Ethylene carbonate aminolysis in methanol. Theor Chem Acc 2017. [DOI: 10.1007/s00214-017-2124-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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