1
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Vemuri VD, Lankalapalli S, Chandra Reddy P. Posaconazole-amino acid cocrystals for improving solubility and oral bioavailability while maintaining antifungal activity and low In vivo toxicity. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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2
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Uchida J, Takahashi Y, Katsurao T, Sakabe H. One-step solvent-free synthesis of carbon dot-based layered composites exhibiting color-tunable photoluminescence. RSC Adv 2022; 12:8283-8289. [PMID: 35424817 PMCID: PMC8984870 DOI: 10.1039/d2ra00312k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Accepted: 03/10/2022] [Indexed: 11/21/2022] Open
Abstract
We here report a practical and green approach to the development of luminescent composites through in situ solvent-free formation of carbon dots on layered inorganic compounds. The composites exhibit higher solid-state photoluminescence than those prepared by mixing of synthesized carbon dots and layered clay minerals. Tuning of the emission color of the composites has also been achieved by the addition of small molecules into phloroglucinol as starting materials for carbonization. The carbon dots synthesized in clay compounds in the solvent-free conditions are well-dispersed to obtain homogeneous composites. Furthermore, we have demonstrated that highly luminescent carbon dots are formed by carbonization in the presence of layered inorganic compounds. The one-step solvent-free approach presented in this work may allow not only facile, economical, and sustainable production of nanostructured carbon dot-based composites but also improvement of their luminescence properties.
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Affiliation(s)
- Junya Uchida
- Advanced Research Department, Kureha Corporation Ochiai, Nishiki-Machi Iwaki Fukushima 974-8686 Japan
| | - Yuka Takahashi
- Advanced Research Department, Kureha Corporation Ochiai, Nishiki-Machi Iwaki Fukushima 974-8686 Japan
| | - Takumi Katsurao
- Advanced Research Department, Kureha Corporation Ochiai, Nishiki-Machi Iwaki Fukushima 974-8686 Japan
| | - Hiroshi Sakabe
- Advanced Research Department, Kureha Corporation Ochiai, Nishiki-Machi Iwaki Fukushima 974-8686 Japan
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3
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Yamada T, Watanabe T, Hatsusaka K, Yuan J, Koyama M, Teshima K. Importance of raw material features for the prediction of flux growth of Al 2O 3 crystals using machine learning. CrystEngComm 2022. [DOI: 10.1039/d2ce00010e] [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 evaluated the role of raw-material features for machine-learning prediction of the flux crystal growth of Al2O3 in MoO3 based on 185 types of growth trials.
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Affiliation(s)
- Tetsuya Yamada
- Research Initiative for Supra-Materials, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
- Department of Materials Chemistry, Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
| | - Takanori Watanabe
- Central Research Laboratories, DIC Corporation, 631, Sakado, Sakura, Chiba 285-8668, Japan
| | - Kazuaki Hatsusaka
- Central Research Laboratories, DIC Corporation, 631, Sakado, Sakura, Chiba 285-8668, Japan
| | - Jianjun Yuan
- Central Research Laboratories, DIC Corporation, 631, Sakado, Sakura, Chiba 285-8668, Japan
| | - Michihisa Koyama
- Research Initiative for Supra-Materials, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
| | - Katsuya Teshima
- Research Initiative for Supra-Materials, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
- Department of Materials Chemistry, Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
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4
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Vemuri VD, Lankalapalli S. Rosuvastatin cocrystals: an attempt to modulate physicochemical parameters. FUTURE JOURNAL OF PHARMACEUTICAL SCIENCES 2021. [DOI: 10.1186/s43094-021-00213-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
The meager physicochemical properties like low solubility and low dissolution rate of rosuvastatin calcium remain as an obstruction for formulation development. In the present work, we explore the evolution of rosuvastatin cocrystal, which may offer the synergetic physico-chemical properties of the drug. Cocrystal crafting depends on two possible intermolecular interactions; heteromeric and the homomeric selection of compounds with complementary functional groups are contemplated as a possible cause of supramolecular synthons in cocrystal formation. Specifically, cocrystals of rosuvastatin with l-asparagine and l-glutamine with molar ratio (1:1) were fabricated by using slow solvent evaporation and slow evaporation techniques. Novel cocrystals of rosuvastatin-asparagine (RSC-C) and rosuvastatin-glutamine (RSC-G) cocrystals obtained by slow solvent evaporation were utilized for preliminary investigation and further scale-up was done by using the solvent evaporation technique.
Results
The novel cocrystals showed a new characteristic of powder X-ray diffraction, thermograms of differential scanning calorimetry, 1H liquid FT-NMR spectra, and scanning electron microscopy. These results signify the establishment of intermolecular interaction within the cocrystals. In both the novel cocrystals, rosuvastatin was determined to be engaged in the hydrogen bond interaction with the complementary functional groups of l-asparagine and l-glutamine. Compared with the pure rosuvastatin, RSC-C and RSC-G cocrystal showed 2.17-fold and 1.60-fold improved solubility respectively. The dissolution test showed that the RSC-C and RSC-G cocrystal exhibited 1.97-fold and 1.94-fold higher dissolution rate than the pure rosuvastatin in pH6.8 phosphate buffer respectively.
Conclusion
Modulation in the chemical environment, improvement in the solubility, and dissolution rate demonstrated the benefit of co-crystallization to improve the physicochemical properties of the drug.
Graphical abstract
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5
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Bhalla Y, Chadha K, Chadha R, Karan M. Daidzein cocrystals: An opportunity to improve its biopharmaceutical parameters. Heliyon 2019; 5:e02669. [PMID: 31763466 PMCID: PMC6861730 DOI: 10.1016/j.heliyon.2019.e02669] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Revised: 06/19/2019] [Accepted: 10/14/2019] [Indexed: 11/17/2022] Open
Abstract
The present study involves the contribution of cocrystallization towards the modification of the biopharmaceutical parameters of poorly watersoluble plant-originated isoflavone, daidzein (DAID). The cocrystals were prepared with GRAS status coformers i.e., isonicotinamide, theobromine and cytosine using mechanochemical grinding and characterized by various analytical techniques (DSC, FT-IR, PXRD and solid-state NMR). Crystal structures were obtained from PXRD data using BIOVIA Materials Studio software and compared in terms of supramolecular motifs. An additional qualitative and quantitative insight into interactions between both components of the cocrystal illustrated the presence of OH⋯N and OH⋯O=C heterosynthons and revealed a stabilizing role of hydrogen bonding. The cocrystals were further evaluated for their solubility, intrinsic dissolution and in vivo profile. Solubility and dissolution studies of pure daidzein and its cocrystals, namely daidzein-isonicotinamide (DIS), daidzein-cytosine (DCYT) and daidzein-theobromine (DTB) exhibited an almost 2-fold improvement. Evaluation of maximum concentration (Cmax) of cocrystals reveals that the DIS cocrystal shows the highest Cmax of 1848.7 ng/ml followed by DCYT cocrystal (1614.9 ng/ml) and DTB cocrystal (1326.0 ng/ml) in comparison to DAID which has a Cmax 870.5 ng/ml. Each of these cocrystals showed significant enhancement in in vivo and in vitro activities in comparison to daidzein. Thus, this report suggests cocrystallization as a viable approach to resolve the solubility and bioavailability issues that circumvent the use of a therapeutically potential isoflavone, daidzein.
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Affiliation(s)
- Yashika Bhalla
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, 160014, India
| | - Kunal Chadha
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, 160014, India
| | - Renu Chadha
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, 160014, India
| | - Maninder Karan
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, 160014, India
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6
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Ishioka S, Watanabe K, Imai H, Tseng YJ, Peng CH, Oaki Y. Glass-transition-induced color-changing resins containing layered polydiacetylene. Chem Commun (Camb) 2019; 55:11723-11726. [PMID: 31512688 DOI: 10.1039/c9cc05303d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A phase-segregated composite of polystyrene (PSt) and layered polydiacetylene (PDA) was formed through simultaneous polymerization and crystallization. As the motion of PSt chains with glass transition is transferred to that of PDA, the color change was achieved by the shortening of the conjugation length with deformation of the layered structure.
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Affiliation(s)
- Shuhei Ishioka
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan.
| | - Kei Watanabe
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan.
| | - Hiroaki Imai
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan.
| | - Yu-Jen Tseng
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Chi-How Peng
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Yuya Oaki
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan.
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7
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Numazawa H, Igarashi Y, Sato K, Imai H, Oaki Y. Experiment‐Oriented Materials Informatics for Efficient Exploration of Design Strategy and New Compounds for High‐Performance Organic Anode. ADVANCED THEORY AND SIMULATIONS 2019. [DOI: 10.1002/adts.201900130] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Hiromichi Numazawa
- Department of Applied Chemistry Faculty of Science and Technology Keio University 3‐14‐1 Hiyoshi Kohoku‐ku Yokohama 223‐8522 Japan
| | - Yasuhiko Igarashi
- Graduate School of Frontier Sciences The University of Tokyo 5‐1‐5 Kashiwanoha Kashiwa 277‐8561 Japan
- Japan Science and Technology Agency PRESTO 4‐1‐8 Honcho Kawaguchi 332‐0012 Japan
| | - Kosuke Sato
- Department of Applied Chemistry Faculty of Science and Technology Keio University 3‐14‐1 Hiyoshi Kohoku‐ku Yokohama 223‐8522 Japan
| | - Hiroaki Imai
- Department of Applied Chemistry Faculty of Science and Technology Keio University 3‐14‐1 Hiyoshi Kohoku‐ku Yokohama 223‐8522 Japan
| | - Yuya Oaki
- Department of Applied Chemistry Faculty of Science and Technology Keio University 3‐14‐1 Hiyoshi Kohoku‐ku Yokohama 223‐8522 Japan
- Japan Science and Technology Agency PRESTO 4‐1‐8 Honcho Kawaguchi 332‐0012 Japan
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8
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One-dimensional substructure of cyanine dye J-aggregate monolayers resulting from non-classical multistage crystallization. MENDELEEV COMMUNICATIONS 2019. [DOI: 10.1016/j.mencom.2019.07.032] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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9
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Schmidt I, Zolotoyabko E, Lee K, Gjardy A, Berner A, Lakin E, Fratzl P, Wagermaier W. Effect of Strontium Ions on Crystallization of Amorphous Calcium Carbonate. CRYSTAL RESEARCH AND TECHNOLOGY 2019. [DOI: 10.1002/crat.201900002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Ingo Schmidt
- Department of Biomaterials; Max Planck Institute of Colloids and Interfaces; Potsdam 14424 Germany
| | - Emil Zolotoyabko
- Department of Materials Science and Engineering; Technion-Israel Institute of Technology; Haifa 32000 Israel
| | - Kyubock Lee
- Graduate School of Energy Science and Technology; Chungnam National University,; 34134 Daejeon Korea
| | - André Gjardy
- Department of Biomaterials; Max Planck Institute of Colloids and Interfaces; Potsdam 14424 Germany
| | - Alex Berner
- Department of Materials Science and Engineering; Technion-Israel Institute of Technology; Haifa 32000 Israel
| | - Evgeny Lakin
- Department of Materials Science and Engineering; Technion-Israel Institute of Technology; Haifa 32000 Israel
| | - Peter Fratzl
- Department of Biomaterials; Max Planck Institute of Colloids and Interfaces; Potsdam 14424 Germany
| | - Wolfgang Wagermaier
- Department of Biomaterials; Max Planck Institute of Colloids and Interfaces; Potsdam 14424 Germany
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10
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Yamamoto Y, Imai H, Oaki Y. Redox-Mediated High-Yield Exfoliation of Layered Composites into Nanosheets. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20180367] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yuna Yamamoto
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Hiroaki Imai
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Yuya Oaki
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
- JST PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
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11
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Structurally controlled layered Ni3C/graphene hybrids using cyano-bridged coordination polymers. Electrochem commun 2019. [DOI: 10.1016/j.elecom.2019.01.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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12
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Ariga K, Nishikawa M, Mori T, Takeya J, Shrestha LK, Hill JP. Self-assembly as a key player for materials nanoarchitectonics. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2019; 20:51-95. [PMID: 30787960 PMCID: PMC6374972 DOI: 10.1080/14686996.2018.1553108] [Citation(s) in RCA: 226] [Impact Index Per Article: 45.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 11/23/2018] [Accepted: 11/25/2018] [Indexed: 05/07/2023]
Abstract
The development of science and technology of advanced materials using nanoscale units can be conducted by a novel concept involving combination of nanotechnology methodology with various research disciplines, especially supramolecular chemistry. The novel concept is called 'nanoarchitectonics' where self-assembly processes are crucial in many cases involving a wide range of component materials. This review of self-assembly processes re-examines recent progress in materials nanoarchitectonics. It is composed of three main sections: (1) the first short section describes typical examples of self-assembly research to outline the matters discussed in this review; (2) the second section summarizes self-assemblies at interfaces from general viewpoints; and (3) the final section is focused on self-assembly processes at interfaces. The examples presented demonstrate the strikingly wide range of possibilities and future potential of self-assembly processes and their important contribution to materials nanoarchitectonics. The research examples described in this review cover variously structured objects including molecular machines, molecular receptors, molecular pliers, molecular rotors, nanoparticles, nanosheets, nanotubes, nanowires, nanoflakes, nanocubes, nanodisks, nanoring, block copolymers, hyperbranched polymers, supramolecular polymers, supramolecular gels, liquid crystals, Langmuir monolayers, Langmuir-Blodgett films, self-assembled monolayers, thin films, layer-by-layer structures, breath figure motif structures, two-dimensional molecular patterns, fullerene crystals, metal-organic frameworks, coordination polymers, coordination capsules, porous carbon spheres, mesoporous materials, polynuclear catalysts, DNA origamis, transmembrane channels, peptide conjugates, and vesicles, as well as functional materials for sensing, surface-enhanced Raman spectroscopy, photovoltaics, charge transport, excitation energy transfer, light-harvesting, photocatalysts, field effect transistors, logic gates, organic semiconductors, thin-film-based devices, drug delivery, cell culture, supramolecular differentiation, molecular recognition, molecular tuning, and hand-operating (hand-operated) nanotechnology.
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Affiliation(s)
- Katsuhiko Ariga
- WPI-MANA, National Institute for Materials Science (NIMS), Ibaraki, Japan
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Japan
| | | | - Taizo Mori
- WPI-MANA, National Institute for Materials Science (NIMS), Ibaraki, Japan
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Japan
| | - Jun Takeya
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Japan
| | - Lok Kumar Shrestha
- WPI-MANA, National Institute for Materials Science (NIMS), Ibaraki, Japan
| | - Jonathan P. Hill
- WPI-MANA, National Institute for Materials Science (NIMS), Ibaraki, Japan
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13
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Liu YQ, Jiao ZZ, Zhang YL, Liu Y, Jiang HB, Han DD, Sun HB. Kraft Mesh Origami for Efficient Oil-Water Separation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:815-823. [PMID: 30563345 DOI: 10.1021/acs.langmuir.8b03541] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Inspired from fish scales that exhibit unique underwater superoleophobicity, artificial porous membranes featuring similar wettability have been successfully developed for oil-water separation. However, most of the superoleophobic meshes are workable only for underwater oil/water separation and become disabled in air. In this article, we reported the facile fabrication of underwater superoleophobic kraft mesh and demonstrated efficient oil-water separation using kraft mesh origamis. Kraft paper that features porosity, natural hydrophilicity, and relatively high elasticity and tear resistance has been found to be an ideal candidate for developing underwater superoleophobic origami. Direct laser drilling has been employed to make microhole arrays on the kraft paper, forming a flexible mesh. The hydrophilic nature and the hierarchical microstructures that consist of microhole arrays and porous microfiber networks make the resultant kraft mesh superoleophobic underwater, enabling oil-water separation. More importantly, the kraft mesh can retain a large amount of water (2.5 times its weight under dry conditions) owing to its porous and hydrophilic structure. Thus, the wet kraft mesh became a slippery surface for oil droplets when it was taken out of the water. This unique feature makes it possible to directly fish out oil droplets from water using a simple kraft mesh origami. Direct laser drilling of paper mesh for flexible origami may open up a new route to the rational design and fabrication of oil-water separation devices.
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Affiliation(s)
- Yu-Qing Liu
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering , Jilin University , Changchun 130012 , China
| | - Zhi-Zhen Jiao
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering , Jilin University , Changchun 130012 , China
| | - Yong-Lai Zhang
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering , Jilin University , Changchun 130012 , China
| | - Yan Liu
- Key Laboratory of Bionic Engineering (Ministry of Education) , Jilin University , Changchun 130022 , China
| | - Hao-Bo Jiang
- Key Laboratory of Bionic Engineering (Ministry of Education) , Jilin University , Changchun 130022 , China
| | - Dong-Dong Han
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering , Jilin University , Changchun 130012 , China
| | - Hong-Bo Sun
- State Key Lab of Precision Measurement and Instruments, Department of Precision Instrument , Tsinghua University , Beijing 100084 , China
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14
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Self-Assembled Fullerene Crystals as Excellent Aromatic Vapor Sensors. SENSORS 2019; 19:s19020267. [PMID: 30641916 PMCID: PMC6359261 DOI: 10.3390/s19020267] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 01/08/2019] [Accepted: 01/08/2019] [Indexed: 01/29/2023]
Abstract
Here we report the aromatic vapor sensing performance of bitter melon shaped nanoporous fullerene C60 crystals that are self-assembled at a liquid-liquid interface between isopropyl alcohol and C60 solution in dodecylbenzene at 25 °C. Average length and center diameter of the crystals were ca. 10 μm and ~2 μm, respectively. Powder X-ray diffraction pattern (pXRD) confirmed a face-centered cubic (fcc) structure with cell dimension ca. a = 1.4272 nm, and V = 2.907 nm3, which is similar to that of the pristine fullerene C60. Transmission electron microscopy (TEM) confirmed the presence of a nanoporous structure. Quartz crystal microbalance (QCM) results showed that the bitter melon shaped nanoporous C60 performs as an excellent sensing system, particularly for aromatic vapors, due to their easy diffusion through the porous architecture and strong π–π interactions with the sp2-carbon.
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15
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Fan C, Xu L, Zhao W. Transformation of birnessite into hollandite under the influence of silver cations in aqueous medium. J SOLID STATE CHEM 2018. [DOI: 10.1016/j.jssc.2018.08.039] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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16
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Kuo D, Nishimura T, Kajiyama S, Kato T. Bioinspired Environmentally Friendly Amorphous CaCO 3-Based Transparent Composites Comprising Cellulose Nanofibers. ACS OMEGA 2018; 3:12722-12729. [PMID: 31457998 PMCID: PMC6645217 DOI: 10.1021/acsomega.8b02014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 09/13/2018] [Indexed: 06/10/2023]
Abstract
Amorphous calcium carbonate (ACC) stabilized by acidic macromolecules is a useful material for the development of environmentally friendly composites. In this study, we synthesized transparent and mechanically tough ACC-based composite materials by the incorporation of water-dispersible cellulose derivatives, namely, carboxymethyl cellulose (CMC) and surface-modified crystalline cellulose nanofibers (CNFs). A solution mixing method used in the present work proved to be a powerful and efficient method for the production of mechanically tough and environmentally friendly materials. Molecular-scale interactions between carboxyl groups and Ca2+ ions induce homogeneous dispersion of CNFs in the composites, and this gives composite films with high transparency and high mechanical properties. The composite films of CMC, CNFs, and ACC at the mixture ratios of 40, 40, and 20 wt %, showed high mechanical properties of 15.8 ± 0.93 GPa for the Young's modulus and 268 ± 20 MPa for the tensile strength. These designed materials that are based on ACC may open up new opportunities in many fields in applications that require the use of environmentally friendly, biodegradable, mechanically tough, and transparent composite materials.
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Affiliation(s)
- David Kuo
- Department of Chemistry and Biotechnology,
School of Engineering, The University of
Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | | | - Satoshi Kajiyama
- Department of Chemistry and Biotechnology,
School of Engineering, The University of
Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Takashi Kato
- Department of Chemistry and Biotechnology,
School of Engineering, The University of
Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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17
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Komiyama M, Mori T, Ariga K. Molecular Imprinting: Materials Nanoarchitectonics with Molecular Information. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2018. [DOI: 10.1246/bcsj.20180084] [Citation(s) in RCA: 161] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Makoto Komiyama
- WPI-MANA, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Life Science Center of Tsukuba Advanced Research Alliance, University of Tsukuba, 1-1-1 Ten-noudai, Tsukuba, Ibaraki 305-8577, Japan
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, P. R. China
| | - Taizo Mori
- WPI-MANA, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Katsuhiko Ariga
- WPI-MANA, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
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18
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Polyvinyl Alcohol/EuBa2Ca2Cu3O9−x Composites: Dielectric and Mechanical Properties. J Inorg Organomet Polym Mater 2018. [DOI: 10.1007/s10904-018-0877-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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19
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Albéric M, Bertinetti L, Zou Z, Fratzl P, Habraken W, Politi Y. The Crystallization of Amorphous Calcium Carbonate is Kinetically Governed by Ion Impurities and Water. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2018; 5:1701000. [PMID: 29876222 PMCID: PMC5980180 DOI: 10.1002/advs.201701000] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2017] [Revised: 01/12/2018] [Indexed: 05/17/2023]
Abstract
Many organisms use amorphous calcium carbonate (ACC) and control its stability by various additives and water; however, the underlying mechanisms are yet unclear. Here, the effect of water and inorganic additives commonly found in biology on the dynamics of the structure of ACC during crystallization and on the energetics of this process is studied. Total X-ray scattering and pair distribution function analysis show that the short- and medium-range order of all studied ACC samples are similar; however, the use of in situ methodologies allow the observation of small structural modifications that are otherwise easily overlooked. Isothermal calorimetric coupled with microgravimetric measurements show that the presence of Mg2+ and of PO43- in ACC retards the crystallization whereas increased water content accelerates the transformation. The enthalpy of ACC with respect to calcite appears, however, independent of the additive concentration but decreases with water content. Surprisingly, the enthalpic contribution of water is compensated for by an equal and opposite entropic term leading to a net independence of ACC thermodynamic stability on its hydration level. Together, these results point toward a kinetic stabilization effect of inorganic additives and water, and may contribute to the understanding of the biological control of mineral stability.
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Affiliation(s)
- Marie Albéric
- Max‐Planck Institute of Colloids and InterfacesPotsdam‐Golm14476Germany
| | - Luca Bertinetti
- Max‐Planck Institute of Colloids and InterfacesPotsdam‐Golm14476Germany
| | - Zhaoyong Zou
- Max‐Planck Institute of Colloids and InterfacesPotsdam‐Golm14476Germany
| | - Peter Fratzl
- Max‐Planck Institute of Colloids and InterfacesPotsdam‐Golm14476Germany
| | - Wouter Habraken
- Max‐Planck Institute of Colloids and InterfacesPotsdam‐Golm14476Germany
| | - Yael Politi
- Max‐Planck Institute of Colloids and InterfacesPotsdam‐Golm14476Germany
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Abstract
In 2016, the Nobel Prize in Chemistry was awarded for pioneering work on molecular machines. Half a year later, in Toulouse, the first molecular car race, a "nanocar race", was held by using the tip of a scanning tunneling microscope as an electrical remote control. In this Focus Review, we discuss the current state-of-the-art in research on molecular machines at interfaces. In the first section, we briefly explain the science behind the nanocar race, followed by a selection of recent examples of controlling molecules on surfaces. Finally, motion synchronization and the functions of molecular machines at liquid interfaces are discussed. This new concept of molecular tuning at interfaces is also introduced as a method for the continuous modification and optimization of molecular structure for target functions.
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Affiliation(s)
- Katsuhiko Ariga
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan.,Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8561, Japan
| | - Taizo Mori
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Waka Nakanishi
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
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21
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Ariga K, Mori T, Shrestha LK. Nanoarchitectonics from Molecular Units to Living-Creature-Like Motifs. CHEM REC 2017; 18:676-695. [PMID: 29205796 DOI: 10.1002/tcr.201700070] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2017] [Accepted: 11/14/2017] [Indexed: 01/20/2023]
Abstract
Important points for the fabrication of functional materials are the creation of nanoscale/molecular-scale units and architecting them into functional materials and systems. Recently, a new conceptual paradigm, nanoarchitectonics, has been proposed to combine nanotechnology and other methodologies including supramolecular chemistry, self-assembly and self-organization to satisfy major features of nanoscience and promote the creation of functional materials and systems. In this account article, our recent research results in materials development based on the nanoarchitectonics concept are summarized in two stories, (i) nanoarchitectonics from fullerenes as the simplest nano-units and (ii) dimension-dependent nanoarchitectonics from various structural units. The former demonstrates creativity of the nanoarchitectonics concept only with simple construction stuffs on materials fabrications, and a wide range of material applicability for the nanoarchitectonics strategy is realized in the latter ones.
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Affiliation(s)
- Katsuhiko Ariga
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan.,Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, 277-0827, Japan
| | - Taizo Mori
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Lok Kumar Shrestha
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
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