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Nakahara H, Krafft MP, Shibata O. How Self-Assembled Nanodomains Can Impact the Organization of a Phospholipid Monolayer-Flower-Like Arrays. Chemphyschem 2020; 21:1966-1970. [PMID: 32710449 DOI: 10.1002/cphc.202000496] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/10/2020] [Indexed: 11/11/2022]
Abstract
We found that monolayers of dipalmitoylphosphatidylcholine (DPPC) and semi-fluorinated tetrablock di(F10H16) self-assemble to form a new type of large, complex flower-like patterns on the surface of water and on solid substrates. The hierarchical organization of these unusual self-assemblies was investigated using compression and surface potential isotherms, in situ fluorescence and Brewster angle microscopies, and atomic force microscopy after transfer.
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Affiliation(s)
- Hiromichi Nakahara
- Department of Industrial Pharmacy, Daiichi University of Pharmacy, 22-1 Tamagawa-cho, Minami-ku Fukuoka, 815-8511, Japan
| | - Marie Pierre Krafft
- Institut Charles Sadron (CNRS), University of Strasbourg, 67034, Strasbourg, France
| | - Osamu Shibata
- Department of Biophysical Chemistry, Nagasaki International University, 2825-7 Huis Ten Bosch, Sasebo, Nagasaki, 859-3298, Japan
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Nakanishi W, Saito S, Sakamoto N, Kashiwagi A, Yamaguchi S, Sakai H, Ariga K. Monitoring Fluorescence Response of Amphiphilic Flapping Molecules in Compressed Monolayers at the Air-Water Interface. Chem Asian J 2019; 14:2869-2876. [PMID: 31290274 DOI: 10.1002/asia.201900769] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 07/05/2019] [Indexed: 11/07/2022]
Abstract
The air-water interface, which is the boundary of two phases with a large difference in polarity, gives a distinct environment compared with bulk water or air. Since the interface provides a field for various biomolecules to work, it is important to understand the molecular behaviors at the interface. Here, polarity-independent flapping viscosity probes (FLAP) equipped with hydrophobic/hydrophilic substituents have been synthesized and studied at the air-water interface. In situ fluorescence (FL), which is related to the internal motion and orientation, of three different FLAPs were investigated at the interface, and the internal motion of the molecule was indicated to be suppressed at the interface. In addition, the molecular response was compared with that of conventional viscosity probes (molecular rotors), which indicates the different behaviors of FLAP probably due to the distinct molecular orientation as well as molecular motion.
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Affiliation(s)
- Waka Nakanishi
- World Premier International (WPI) Centre for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, 305-0044, Japan.,Research Center for Functional Materials, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, 305-0047, Japan
| | - Shohei Saito
- Department of Chemistry, Graduate School of Science, Kyoto University Kitashirakawa Oiwake, Sakyo, Kyoto, 606-8502, Japan.,Japan Science and Technology Agency (JST), PRESTO Kitashirakawa Oiwake, Sakyo, Kyoto, 606-8502, Japan
| | - Naoki Sakamoto
- World Premier International (WPI) Centre for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, 305-0044, Japan.,Department of Pure and Applied Chemistry, Tokyo University of Science, 2641 Yamazaki, Noda, 278-8510, Japan
| | - Akihiro Kashiwagi
- Department of Chemistry, Graduate School of Science, Nagoya University, Furo, Chikusa, Nagoya, 464-8602, Japan
| | - Shigehiro Yamaguchi
- Department of Chemistry, Graduate School of Science, Nagoya University, Furo, Chikusa, Nagoya, 464-8602, Japan
| | - Hideki Sakai
- Department of Pure and Applied Chemistry, Tokyo University of Science, 2641 Yamazaki, Noda, 278-8510, Japan
| | - Katsuhiko Ariga
- World Premier International (WPI) Centre for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, 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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Abuillan W, Veschgini M, Mielke S, Yamamoto A, Liu X, Konovalov O, Krafft MP, Tanaka M. Long-Range Lateral Correlation between Self-Assembled Domains of Fluorocarbon-Hydrocarbon Tetrablocks by Quantitative GISAXS. Chemphyschem 2019; 20:898-904. [PMID: 30570207 DOI: 10.1002/cphc.201800967] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 11/26/2018] [Indexed: 01/22/2023]
Abstract
The structure and lateral correlation of fluorocarbon-hydrocarbon tetrablock di(F10Hm) domains at the air/water interface have been determined by quantitative analysis of grazing incidence small-angle X-ray scattering (GISAXS) data. The measured GISAXS signals can be well represented by the full calculation of the form and structure factors. The form factor suggests that di(F10Hm) domains take a hemiellipsoid shape. Both major and minor axes of the hemiellipsoids monotonically increased in response to the elongation of the hydrocarbon blocks, which can be explained by the concominant increase in van der Waals interaction. The structure factor calculated from the GISAXS signals suggests that the domains take an orthorhombic lattice. Remarkably, the lateral correlation can reach over a distance that is more than 14 times longer than the distance to the nearest neighbors. Our data suggest that quantitative GISAXS enables the optimal design of mesoscopic self-assemblies at the air/water interface by fine-tuning of the structures of molecular building blocks.
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Affiliation(s)
- Wasim Abuillan
- Physical Chemistry of Biosystems, Institute of Physical Chemistry, Heidelberg University, D-69120 Heidelberg, Germany.,Current address: Institute of Industrial Science, The University of Tokyo, 153-0041, Tokyo, Japan
| | - Mariam Veschgini
- Physical Chemistry of Biosystems, Institute of Physical Chemistry, Heidelberg University, D-69120 Heidelberg, Germany
| | - Salomé Mielke
- Physical Chemistry of Biosystems, Institute of Physical Chemistry, Heidelberg University, D-69120 Heidelberg, Germany
| | - Akihisa Yamamoto
- Center for Integrative Medicine and Physics, I, nstitute for Advanced Study, Kyoto University, 606-8501, Kyoto, Japan
| | - Xianhe Liu
- Institut Charles Sadron (CNRS UPR 22), University of Strasbourg, 23 rue du Loess, F-67034, Strasbourg Cedex, France
| | - Oleg Konovalov
- European Synchrotron Radiation Facility (ESRF), Grenoble Cedex 9, 38053, France
| | - Marie Pierre Krafft
- Institut Charles Sadron (CNRS UPR 22), University of Strasbourg, 23 rue du Loess, F-67034, Strasbourg Cedex, France
| | - Motomu Tanaka
- Physical Chemistry of Biosystems, Institute of Physical Chemistry, Heidelberg University, D-69120 Heidelberg, Germany.,Center for Integrative Medicine and Physics, I, nstitute for Advanced Study, Kyoto University, 606-8501, Kyoto, Japan
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