1
|
Speer D, Salvador-Castell M, Huang Y, Liu GY, Sinha SK, Parikh AN. Surfactant-Mediated Structural Modulations to Planar, Amphiphilic Multilamellar Stacks. J Phys Chem B 2023; 127:7497-7508. [PMID: 37584633 PMCID: PMC10476200 DOI: 10.1021/acs.jpcb.3c01654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 08/01/2023] [Indexed: 08/17/2023]
Abstract
The hydrophobic effect, a ubiquitous process in biology, is a primary thermodynamic driver of amphiphilic self-assembly. It leads to the formation of unique morphologies including two highly important classes of lamellar and micellar mesophases. The interactions between these two types of structures and their involved components have garnered significant interest because of their importance in key biochemical technologies related to the isolation, purification, and reconstitution of membrane proteins. This work investigates the structural organization of mixtures of the lamellar-forming phospholipid 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC) and two zwitterionic micelle-forming surfactants, being n-dodecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate (Zwittergent 3-12 or DDAPS) and 1-oleoyl-2-hydroxy-sn-glycero-3-phosphocholine (O-Lyso-PC), when assembled by water vapor hydration with X-ray diffraction measurements, brightfield optical microscopy, wide-field fluorescence microscopy, and atomic force microscopy. The results reveal that multilamellar mesophases of these mixtures can be assembled across a wide range of POPC to surfactant (POPC:surfactant) concentration ratios, including ratios far surpassing the classical detergent-saturation limit of POPC bilayers without significant morphological disruptions to the lamellar motif. The mixed mesophases generally decreased in lamellar spacing (D) and headgroup-to-headgroup distance (Dhh) with a higher concentration of the doped surfactant, but trends in water layer thickness (Dw) between each bilayer in the stack are highly variable. Further structural characteristics including mesophase topography, bilayer thickness, and lamellar rupture force were revealed by atomic force microscopy (AFM), exhibiting homogeneous multilamellar stacks with no significant physical differences with changes in the surfactant concentration within the mesophases. Taken together, the outcomes present the assembly of unanticipated and highly unique mixed mesophases with varied structural trends from the involved surfactant and lipidic components. Modulations in their structural properties can be attributed to the surfactant's chemical specificity in relation to POPC, such as the headgroup hydration and the hydrophobic chain tail mismatch. Taken together, our results illustrate how specific chemical complexities of surfactant-lipid interactions can alter the morphologies of mixed mesophases and thereby alter the kinetic pathways by which surfactants dissolve lipid mesophases in bulk aqueous solutions.
Collapse
Affiliation(s)
- Daniel
J. Speer
- Chemistry
Graduate Group, University of California,
Davis, One Shields Avenue, Davis, California 95616, United States
| | - Marta Salvador-Castell
- Department
of Physics, University of California, San
Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Yuqi Huang
- Department
of Chemistry, University of California,
Davis, One Shields Avenue, Davis, California 95616, United States
| | - Gang-Yu Liu
- Department
of Chemistry, University of California,
Davis, One Shields Avenue, Davis, California 95616, United States
| | - Sunil K. Sinha
- Department
of Physics, University of California, San
Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Atul N. Parikh
- Chemistry
Graduate Group, University of California,
Davis, One Shields Avenue, Davis, California 95616, United States
- Department
of Biomedical Engineering, University of
California, Davis, One
Shields Avenue, Davis, California 95616, United States
| |
Collapse
|
2
|
Liang W, Rhodes S, Zheng J, Wang X, Fang J. Soft-Templated Synthesis of Lightweight, Elastic, and Conductive Nanotube Aerogels. ACS APPLIED MATERIALS & INTERFACES 2018; 10:37426-37433. [PMID: 30289683 DOI: 10.1021/acsami.8b14071] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Conductive polymer (CP) nanotubes are fascinating nanostructures with high electrical conductivity, fast charge/discharge capability, and high mechanical strength. Despite these attractive physical properties, progress in the synthesis of CP nanotube hydrogels is still limited. Here, we report a facile and effective approach for the synthesis of polypyrrole (PPy) nanotube hydrogels by using the weakly interconnected network of self-assembled nanotubes of lithocholic acid as a soft template. The PPy nanotube hydrogels are then converted to aerogels by freeze drying, in which PPy nanotubes form elastic and conductive networks with a density of 38 mg/cm3 and an electrical conductivity of 1.13 S/m. The PPy nanotube aerogels are able to sustain a compressive strain as high as 70% and show an excellent cyclic compressibility due to their robust nanotube networks and hierarchically porous structures, which allow the compressive stress to be easily dissipated. Furthermore, PPy nanotube aerogels show negative strain-dependent electrical resistance changes under compressive strains. The lightweight, elastic, and conductive PPy nanotube aerogels may find potential applications in strain sensors, supercapacitors, and tissue scaffolds.
Collapse
Affiliation(s)
- Wenlang Liang
- College of Materials Science and Engineering , Southwest Jiaotong University , Chengdu 610031 , China
- Advanced Materials Processing and Analysis Center, Department of Materials Science and Engineering , University of Central Florida , Orlando , Florida 32816 , United States
| | - Samuel Rhodes
- Advanced Materials Processing and Analysis Center, Department of Materials Science and Engineering , University of Central Florida , Orlando , Florida 32816 , United States
| | - Jianlu Zheng
- College of Materials Science and Engineering , Shenzhen University , Shenzhen 518060 , Sichuan , China
| | - Xiaochen Wang
- Advanced Materials Processing and Analysis Center, Department of Materials Science and Engineering , University of Central Florida , Orlando , Florida 32816 , United States
| | - Jiyu Fang
- Advanced Materials Processing and Analysis Center, Department of Materials Science and Engineering , University of Central Florida , Orlando , Florida 32816 , United States
| |
Collapse
|
3
|
Kameta N, Dong J, Yui H. Thermoresponsive PEG-Coated Nanotubes as Chiral Selectors of Amino Acids and Peptides. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1800030. [PMID: 29532990 DOI: 10.1002/smll.201800030] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 02/13/2018] [Indexed: 08/23/2024]
Abstract
A series of nanotubes with a dense layer of short poly(ethylene glycol) (PEG) chains on the inner surface are prepared by means of a coassembly process using glycolipids and PEG derivatives. Dehydration of the PEG chains by heating increases the hydrophobicity of the nanotube channel and fluorescent-dye-labeled amino acids are extracted from bulk solution. Rehydration of the PEG chains by cooling results in back-extraction of the amino acids into the bulk solution. Because of the supramolecular chirality of the nanotubes, amino acid enantiomers can be separated in the back-extraction procedure, which is detectable with the naked eye as a change in fluorescence as the amino acids are released from the nanotubes. The efficiency and selectivity of the chiral separation are enhanced by tuning the chemical features and inner diameter of the nanotube channels. For example, compared with wide nanotube channels (8 nm), narrow nanotube channels (4 nm) provide more effective electrostatic attraction and hydrogen bond interaction environments for the transporting amino acids. Introduction of branched alkyl chains to the inner surface of the nanotubes enables chiral separation of peptides containing hydrophobic amino acids. The system described here provides a simple, quick, and on-site chiral separation in biological and medical fields.
Collapse
Affiliation(s)
- Naohiro Kameta
- Nanomaterials Research Institute, Department of Materials and Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
| | - Jiuchao Dong
- Nanomaterials Research Institute, Department of Materials and Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
| | - Hiroharu Yui
- Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
- Water Frontier Science and Technology Research Center, Research Institute for Science and Technology, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
| |
Collapse
|
4
|
Mehata MS, Yang Y, Han K. Probing Charge-Transfer and Short-Lived Triplet States of a Biosensitive Molecule, 2,6-ANS: Transient Absorption and Time-Resolved Spectroscopy. ACS OMEGA 2017; 2:6782-6785. [PMID: 31457265 PMCID: PMC6644780 DOI: 10.1021/acsomega.7b00921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Accepted: 10/02/2017] [Indexed: 06/10/2023]
Abstract
We report the existence of a short-lived triplet electronic state of 2,6-ANS (2-anilinonaphthalene-6-sulfonic acid), which, together with nonplanar (NP) and planar [charge-transfer (CT)] states, is produced following photoexcitation; these results are based on nanosecond transient absorption and time-resolved decays. The short-lived triplet state has a lifetime of ∼126 ns and is observed via triplet-triplet (T-T) transitions after exciting 2,6-ANS with a pump laser pulse of 355 nm (probe wavelength range of 360-500 nm). Moreover, the CT state, which is very close to the NP state produced from the locally excited state/NP state, emits active fluorescence with a lifetime of ∼11 ns. The solvent plays a major role in the rotation of the phenylamino group during the conversion of the NP state to the CT state, and vice versa. Intersystem crossing occurs from the CT state. Thus, investigating the triplet state together with the CT/NP states of 2,6-ANS, a commonly used probe for sensing proteins and other biomolecules, is highly relevant and helps reveal its photoexcitation dynamics.
Collapse
Affiliation(s)
- Mohan Singh Mehata
- Laser-Spectroscopy
Laboratory, Department of Applied Physics, Delhi Technological University, Bawana Road, Delhi 110042, India
| | - Yang Yang
- State
Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of
Chemical Physics (DICP), Chinese Academy
of Sciences, Dalian 116023, China
| | - Keli Han
- State
Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of
Chemical Physics (DICP), Chinese Academy
of Sciences, Dalian 116023, China
| |
Collapse
|
5
|
Kameta N, Ding W, Dong J. Soft Nanotubes Derivatized with Short PEG Chains for Thermally Controllable Extraction and Separation of Peptides. ACS OMEGA 2017; 2:6143-6150. [PMID: 30023764 PMCID: PMC6044993 DOI: 10.1021/acsomega.7b00838] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 09/13/2017] [Indexed: 06/08/2023]
Abstract
By means of a two-step self-assembly process involving three components, including short poly(ethylene glycol) (PEG) chains, we produced two different types of molecular monolayer nanotubes: nanotubes densely functionalized with PEG chains on the outer surface and nanotubes densely functionalized with PEG chains in the nanochannel. Turbidity measurements and fluorescence spectroscopy with an environmentally responsive probe suggested that the PEG chains underwent dehydration when the nanotubes were heated above 44-57 °C and rehydration when they were cooled back to 25 °C. Dehydration of the exterior or interior PEG chains rendered them hydrophobic and thus able to effectively extract hydrophobic amino acids from the bulk solution. Rehydration of the PEG chains restored their hydrophilicity, thus allowing the extracted amino acids to be squeezed out into the bulk solutions. The nanotubes with exterior PEG chains exhibited selectivity for all of the hydrophobic amino acids, whereas the interior PEG chains were selective for hydrophobic amino acids with an aliphatic side chain over hydrophobic amino acids with an aromatic side chain. The higher selectivity of the latter system is attributable that the extraction and back-extraction processes involve encapsulation and transportation of the amino acids in the nanotube channel. As the result, the latter system was useful for separation of peptides that differed by only a single amino acid, whereas the former system showed no such separation ability.
Collapse
Affiliation(s)
- Naohiro Kameta
- Nanomaterials Research Institute, National Institute of Advanced Industrial Science
and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Wuxiao Ding
- Nanomaterials Research Institute, National Institute of Advanced Industrial Science
and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Jiuchao Dong
- Nanomaterials Research Institute, National Institute of Advanced Industrial Science
and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| |
Collapse
|
6
|
Xu H, Nagasaka S, Kameta N, Masuda M, Ito T, Higgins DA. Imaging fluorescence correlation spectroscopy studies of dye diffusion in self-assembled organic nanotubes. Phys Chem Chem Phys 2016; 18:16766-74. [DOI: 10.1039/c6cp03069f] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Imaging fluorescence correlation spectroscopy is used to elucidate the rate and mechanism for diffusion of charged molecules within charged, self-assembled organic nanotubes.
Collapse
Affiliation(s)
- Hao Xu
- Department of Chemistry
- Kansas State University
- Manhattan
- USA
| | | | - Naohiro Kameta
- Research Institute for Sustainable Chemistry
- Department of Materials and Chemistry
- National Institute of Advanced Industrial Science and Technology (AIST)
- Tsukuba
- Japan
| | - Mitsutoshi Masuda
- Research Institute for Sustainable Chemistry
- Department of Materials and Chemistry
- National Institute of Advanced Industrial Science and Technology (AIST)
- Tsukuba
- Japan
| | - Takashi Ito
- Department of Chemistry
- Kansas State University
- Manhattan
- USA
| | | |
Collapse
|
7
|
Assal Y, Mizuguchi Y, Mie M, Kobatake E. Growth Factor Tethering to Protein Nanoparticles via Coiled-Coil Formation for Targeted Drug Delivery. Bioconjug Chem 2015; 26:1672-7. [PMID: 26079837 DOI: 10.1021/acs.bioconjchem.5b00266] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Protein-based nanoparticles are attractive carriers for drug delivery because they are biodegradable and can be genetically designed. Moreover, modification of protein-based nanoparticles with cell-specific ligands allows for active targeting abilities. Previously, we developed protein nanoparticles comprising genetically engineered elastin-like polypeptides (ELPs) with fused polyaspartic acid tails (ELP-D). Epidermal growth factor (EGF) was displayed on the surface of the ELP-D nanoparticles via genetic design to allow for active cell-targeting abilities. Herein, we focused on the coiled-coil structural motif as a means for noncovalent tethering of growth factor to ELP-D. Specifically, two peptides known to form a heterodimer via a coiled-coil structural motif were fused to ELP-D and single-chain vascular endothelial growth factor (scVEGF121), to facilitate noncovalent tethering upon formation of the heterodimer coiled-coil structure. Drug-loaded growth factor-tethered ELP-Ds were found to be effective against cancer cells by provoking cell apoptosis. These results demonstrate that tethering growth factor to protein nanoparticles through coiled-coil formation yields a promising biomaterial candidate for targeted drug delivery.
Collapse
Affiliation(s)
- Yasmine Assal
- Department of Environmental Chemistry and Engineering, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Yokohama 226-8052, Japan
| | - Yoshinori Mizuguchi
- Department of Environmental Chemistry and Engineering, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Yokohama 226-8052, Japan
| | - Masayasu Mie
- Department of Environmental Chemistry and Engineering, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Yokohama 226-8052, Japan
| | - Eiry Kobatake
- Department of Environmental Chemistry and Engineering, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Yokohama 226-8052, Japan
| |
Collapse
|
8
|
Barclay TG, Constantopoulos K, Matisons J. Nanotubes Self-Assembled from Amphiphilic Molecules via Helical Intermediates. Chem Rev 2014; 114:10217-91. [DOI: 10.1021/cr400085m] [Citation(s) in RCA: 185] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Thomas G. Barclay
- Flinders Centre for Nanoscale Science & Technology, School of Chemical and Physical Sciences, Flinders University, Adelaide, South Australia 5042, Australia
| | - Kristina Constantopoulos
- Flinders Centre for Nanoscale Science & Technology, School of Chemical and Physical Sciences, Flinders University, Adelaide, South Australia 5042, Australia
| | - Janis Matisons
- Flinders Centre for Nanoscale Science & Technology, School of Chemical and Physical Sciences, Flinders University, Adelaide, South Australia 5042, Australia
| |
Collapse
|
9
|
|
10
|
Matsumoto R, Hara R, Andou T, Mie M, Kobatake E. Targeting of EGF-displayed protein nanoparticles with anticancer drugs. J Biomed Mater Res B Appl Biomater 2014; 102:1792-8. [DOI: 10.1002/jbm.b.33162] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Revised: 02/27/2014] [Accepted: 03/19/2014] [Indexed: 01/01/2023]
Affiliation(s)
- Rie Matsumoto
- Department of Environmental Chemistry and Engineering; Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology; 4259 Nagatsuta Midori-ku Yokohama 226-8502 Japan
| | - Rieko Hara
- Department of Environmental Chemistry and Engineering; Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology; 4259 Nagatsuta Midori-ku Yokohama 226-8502 Japan
| | - Takashi Andou
- Department of Environmental Chemistry and Engineering; Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology; 4259 Nagatsuta Midori-ku Yokohama 226-8502 Japan
| | - Masayasu Mie
- Department of Environmental Chemistry and Engineering; Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology; 4259 Nagatsuta Midori-ku Yokohama 226-8502 Japan
| | - Eiry Kobatake
- Department of Environmental Chemistry and Engineering; Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology; 4259 Nagatsuta Midori-ku Yokohama 226-8502 Japan
| |
Collapse
|
11
|
Kameta N. Soft nanotube hosts for capsulation and release of molecules, macromolecules, and nanomaterials. J INCL PHENOM MACRO 2014. [DOI: 10.1007/s10847-014-0397-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
12
|
Abstract
Phenolic compounds sourced from agro-based feedstock, viz. cashew nut shell liquid, lignin, tannin, palm oil, and coconut shell tar, have come up as sustainable alternatives to petro-based feedstock. This review explores their utility as green polymer feedstock with citation of ~ 600 references.
Collapse
Affiliation(s)
- Bimlesh Lochab
- Department of Chemistry
- School of Natural Sciences
- Shiv Nadar University
- Greater Noida, India
| | - Swapnil Shukla
- Department of Chemistry
- School of Natural Sciences
- Shiv Nadar University
- Greater Noida, India
| | - Indra K. Varma
- Centre for Polymer Science and Engineering
- IIT, Delhi
- New Delhi, India
| |
Collapse
|
13
|
Iwaura R, Yui H, Someya Y, Ohnishi-Kameyama M. Construction of energy transfer pathways self-assembled from DNA-templated stacks of anthracene. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2013; 130:199-204. [PMID: 24342131 DOI: 10.1016/j.jphotobiol.2013.11.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Revised: 11/13/2013] [Accepted: 11/13/2013] [Indexed: 11/30/2022]
Abstract
We describe optical properties of anthracene stacks formed from single-component self-assembly of thymidylic acid-appended anthracene 2,6-bis[5-(3'-thymidylic acid)pentyloxy] anthracene (TACT) and the binary self-assembly of TACT and complementary 20-meric oligoadenylic acid (TACT/dA20) in an aqueous buffer. UV-Vis and emission spectra for the single-component self-assembly of TACT and the binary self-assembly of TACT/dA20 were very consistent with stacked acene moieties in both self-assemblies. Interestingly, time-resolved fluorescence spectra from anthracene stacks exhibited very different features of the single-component and binary self-assemblies. In the single-component self-assembly of TACT, a dynamic Stokes shift (DSS) and relatively short fluorescence lifetime (τ=0.35ns) observed at around 450nm suggested that the anthracene moieties were flexible. Moreover, a broad emission at 530nm suggested the formation of an excited dimer (excimer). In the binary self-assembly of TACT/dA20, we detected a broad, red-shifted emission component at 534nm with a lifetime (τ=0.4ns) shorter than that observed in the TACT single-component self-assembly. Combining these results with the emission spectrum of the binary self-assembly of TACT/5'-HEX dA20, we concluded that the energy transfer pathway was constructed by columnar anthracene stacks formed from the DNA-templated self-assembly of TACT.
Collapse
Affiliation(s)
- Rika Iwaura
- National Food Research Institute (NFRI), National Agriculture and Food Research Organization (NARO), 2-1-12 Kannondai, Tsukuba, Ibaraki 305-8642, Japan.
| | - Hiroharu Yui
- Department of Chemistry, Faculty of Science, Tokyo University of Science (TUS), 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Yuu Someya
- Department of Chemistry, Faculty of Science, Tokyo University of Science (TUS), 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Mayumi Ohnishi-Kameyama
- National Food Research Institute (NFRI), National Agriculture and Food Research Organization (NARO), 2-1-12 Kannondai, Tsukuba, Ibaraki 305-8642, Japan
| |
Collapse
|
14
|
Liu X, Gao H, Huang F, Pei X, An Y, Zhang Z, Shi L. Structure change of mixed shell polymeric micelles and its interaction with bio-targets as probed by the 1-anilino-8-naphthalene sulfonate (ANS) fluorescence. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.05.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
15
|
Balachandran VS, Jadhav SR, Vemula PK, John G. Recent advances in cardanol chemistry in a nutshell: from a nut to nanomaterials. Chem Soc Rev 2013; 42:427-38. [DOI: 10.1039/c2cs35344j] [Citation(s) in RCA: 206] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
16
|
Han YG, Aoyagi M, Asakawa M, Shimizu T. Facile fabrication and magnetic properties of a one-dimensional magnetite peapod in a lipid nanotube. ACS APPLIED MATERIALS & INTERFACES 2012; 4:2439-2444. [PMID: 22486299 DOI: 10.1021/am300122f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Magnetite nanoclusters (MNCs) were aligned one-dimensionally in the hollow cavity of a lipid nanotube (LNT) as a peapod using a simple mixing method in an aqueous solution. The electrostatic interaction of the two materials was considerable enough to allow the preparation of a densely packed MNC-LNT peapod composite. The composite was formed at a pH 5.4-6.8, i.e., near the isoelectric point of the MNCs. At a pH 5.4-6.8, there was neither a strong attractive nor repulsive electrostatic interaction between the surface of the MNC and the LNT. The MNCs-capped LNT composites were formed at basic conditions (above a pH 7.8) in which the MNCs and the LNT pushed each other because of their opposite surface charges. The magnetic property measurement revealed that the 1D aligned MNCs in the peapod structure had a much higher coercivity (10.6 Oe) than the bulk randomized MNCs (5.8 Oe).
Collapse
Affiliation(s)
- Youn-Gyu Han
- Nanotube Research Center (NTRC), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan.
| | | | | | | |
Collapse
|
17
|
One-pot synthesis of dihydropyrano[2,3-c]chromenes via a three component coupling of aromatic aldehydes, malononitrile, and 3-hydroxycoumarin catalyzed by nano-structured ZnO in water: a green protocol. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.06.101] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
18
|
Kyakuno H, Matsuda K, Yahiro H, Inami Y, Fukuoka T, Miyata Y, Yanagi K, Maniwa Y, Kataura H, Saito T, Yumura M, Iijima S. Confined water inside single-walled carbon nanotubes: Global phase diagram and effect of finite length. J Chem Phys 2011; 134:244501. [DOI: 10.1063/1.3593064] [Citation(s) in RCA: 117] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
19
|
SOMEYA Y, YUI H. Measurements of Microproperties of Water Utilizing Charge-Transfer Dye Anilinonaphthalene Sulfonate. BUNSEKI KAGAKU 2011. [DOI: 10.2116/bunsekikagaku.60.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Yuu SOMEYA
- Department of Chemical Sciences and Technology, Graduate School of Chemical Sciences and Technology, Tokyo University of Science
| | - Hiroharu YUI
- Department of Chemical Sciences and Technology, Graduate School of Chemical Sciences and Technology, Tokyo University of Science
| |
Collapse
|
20
|
Affiliation(s)
- Naohiro KAMETA
- Nanotube Research Center (NTRC), National Institute of Advanced Industrial Science and Technology (AIST)
| |
Collapse
|
21
|
Someya Y, Yui H. Fluorescence lifetime probe for solvent microviscosity utilizing anilinonaphthalene sulfonate. Anal Chem 2010; 82:5470-6. [PMID: 20524653 DOI: 10.1021/ac100116j] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The correlation between the fluorescent dynamics of excited anilinonaphthalene sulfonate (ANS) and the microviscosity of solvent molecules surrounding ANS is investigated by time-resolved fluorescence spectroscopy. ANS has been widely used to probe the local hydrophobicity due to the drastic change in its intensity. It is revealed that the fluorescence lifetime from the charge transfer (CT) state of ANS sensitively reflects the microviscosity. The higher sensitivity of 2,6-ANS than of 1,8-ANS demonstrates that the spatial freedom of the rotating phenylamino group in the photoexcited ANS is an important factor that determines the sensitivity. As an application, the measurements of the microviscosity of water in biologically important systems, such as hyaluronan, gellan gum, and gelatin aqueous solutions are also presented. The present results suggest that the fluorescence lifetime of ANS enables the estimation of the solvent microviscosity and provide a useful probe molecule for fluorescence lifetime imaging microscopy.
Collapse
Affiliation(s)
- Yuu Someya
- Department of Chemistry, Faculty of Science, Tokyo University of Science, 12 Ichigaya-Funagawaramachi, Shinjyuku-ku, Tokyo 162-0826, Japan
| | | |
Collapse
|
22
|
Kameta N, Minamikawa H, Someya Y, Yui H, Masuda M, Shimizu T. Confinement effect of organic nanotubes toward green fluorescent protein (GFP) depending on the inner diameter size. Chemistry 2010; 16:4217-23. [PMID: 20235251 DOI: 10.1002/chem.200903413] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Transportation, release behavior, and stability of a green fluorescent protein (GFP, 3x4 nm) in self-assembled organic nanotubes with three different inner diameters (10, 20, and 80 nm) have been studied in terms of novel nanocontainers. Selective immobilization of a fluorescent acceptor dye on the inner surface enabled us to not only visualize the transportation of GFP in the nanochannels but to also detect release of the encapsulated GFP to the bulk solution in real time, based on fluorescence resonance energy transfer (FRET). Obtained diffusion constants and release rates of GFP markedly decreased as the inner diameter of the nanotubes was decreased. An endo-sensing procedure also clarified the dependence of the thermal and chemical stabilities of the GFP on the inner diameters. The GFP encapsulated in the 10 nm nanochannel showed strong resistance to heat and to a denaturant. On the other hand, the 20 nm nanochannel accelerated the denaturation of the encapsulated GFP compared with the rate of denaturation of the free GFP in bulk and the encapsulated GFP in the 80 nm nanochannels. The confinement effect based on rational fitting of the inner diameter to the size of GFP allowed us to store it stably and without denaturation under high temperatures and high denaturant concentrations.
Collapse
Affiliation(s)
- Naohiro Kameta
- Nanotube Research Center (NTRC), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan.
| | | | | | | | | | | |
Collapse
|
23
|
KAMETA N, MASUDA M, SHIMIZU T. Liquid-Phase Nanospace Science of Bionanotubes Consisting of Synthetic Lipid Membranes. KOBUNSHI RONBUNSHU 2010. [DOI: 10.1295/koron.67.560] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
24
|
Yun M, Park C, Lee J, Kim C. Self-assembled dendron nanotubes: Surface functionalization with maltosyl units and their reversible complexation with Concanavalin A. ACTA ACUST UNITED AC 2009. [DOI: 10.1002/pola.23801] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
25
|
Anilkumar P, Jayakannan M. A Novel Supramolecular Organogel Nanotubular Template Approach for Conducting Nanomaterials. J Phys Chem B 2009; 114:728-36. [DOI: 10.1021/jp909016r] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- P. Anilkumar
- Chemical Sciences & Technology Division, National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram-695019, Kerala, India, and Department of Chemistry, Indian Institute of Science Education and Research (IISER), NCL Innovation Park, Dr. Homi Bhabha Road, Pune 411008, India
| | - M. Jayakannan
- Chemical Sciences & Technology Division, National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram-695019, Kerala, India, and Department of Chemistry, Indian Institute of Science Education and Research (IISER), NCL Innovation Park, Dr. Homi Bhabha Road, Pune 411008, India
| |
Collapse
|
26
|
Fujita Y, Mie M, Kobatake E. Construction of nanoscale protein particle using temperature-sensitive elastin-like peptide and polyaspartic acid chain. Biomaterials 2009; 30:3450-7. [DOI: 10.1016/j.biomaterials.2009.03.012] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2008] [Accepted: 03/04/2009] [Indexed: 11/26/2022]
|
27
|
Tresset G. The multiple faces of self-assembled lipidic systems. PMC BIOPHYSICS 2009; 2:3. [PMID: 19374753 PMCID: PMC2695813 DOI: 10.1186/1757-5036-2-3] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2008] [Accepted: 04/17/2009] [Indexed: 11/10/2022]
Abstract
Lipids, the building blocks of cells, common to every living organisms, have the propensity to self-assemble into well-defined structures over short and long-range spatial scales. The driving forces have their roots mainly in the hydrophobic effect and electrostatic interactions. Membranes in lamellar phase are ubiquitous in cellular compartments and can phase-separate upon mixing lipids in different liquid-crystalline states. Hexagonal phases and especially cubic phases can be synthesized and observed in vivo as well. Membrane often closes up into a vesicle whose shape is determined by the interplay of curvature, area difference elasticity and line tension energies, and can adopt the form of a sphere, a tube, a prolate, a starfish and many more. Complexes made of lipids and polyelectrolytes or inorganic materials exhibit a rich diversity of structural morphologies due to additional interactions which become increasingly hard to track without the aid of suitable computer models. From the plasma membrane of archaebacteria to gene delivery, self-assembled lipidic systems have left their mark in cell biology and nanobiotechnology; however, the underlying physics is yet to be fully unraveled.PACS Codes: 87.14.Cc, 82.70.Uv.
Collapse
Affiliation(s)
- Guillaume Tresset
- Laboratoire de Physique des Solides, Université Paris-Sud, CNRS, UMR 8502, F-91405 Orsay Cedex, France.
| |
Collapse
|
28
|
Okada T, Harada M, Ohki T. Hydration of ions in confined spaces and ion recognition selectivity. ANAL SCI 2009; 25:167-75. [PMID: 19212049 DOI: 10.2116/analsci.25.167] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The hydration of ions in confined spaces, such as the interior of ion-exchange resins, micelles, and surface monolayers, is discussed on the basis of results obtained with X-ray absorption fine structure studies, electrophoresis, and ion-transfer voltammetry. The general trends are that anions are partly dehydrated therein, whereas cations are likely to keep their first hydration shells. For bromide ions, the hydration numbers under various circumstances have been determined. The extents of dehydration depend not only on the structure of the cationic sites electrostatically attracting bromide ions but also on whether the cationic sites are exposed to a solution or are effectively shielded from it. These findings will be useful for designing the systems for ionic recognition and separation.
Collapse
Affiliation(s)
- Tetsuo Okada
- Department of Chemistry, Tokyo Institute of Technology, Meguro, Tokyo 152-8551, Japan.
| | | | | |
Collapse
|
29
|
Hirano K, Aoyagi M, Ishido T, Ooie T, Frusawa H, Asakawa M, Shimizu T, Ishikawa M. Measuring the Length Distribution of Self-Assembled Lipid Nanotubes by Orientation Control with a High-Frequency Alternating Current Electric Field in Aqueous Solutions. Anal Chem 2009; 81:1459-64. [DOI: 10.1021/ac8022795] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ken Hirano
- Health Technology Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 2217-14, Hayashi-cho, Takamatsu, Kagawa, 761-0395, Japan, Nanotube Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1, Higashi, Tsukuba, 305-8565, Japan, and Department of Environmental Systems Engineering, Graduate School of Engineering, Kochi University of Technology, Tosayamada-cho, Kochi, 782-8502, Japan
| | - Masaru Aoyagi
- Health Technology Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 2217-14, Hayashi-cho, Takamatsu, Kagawa, 761-0395, Japan, Nanotube Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1, Higashi, Tsukuba, 305-8565, Japan, and Department of Environmental Systems Engineering, Graduate School of Engineering, Kochi University of Technology, Tosayamada-cho, Kochi, 782-8502, Japan
| | - Tomomi Ishido
- Health Technology Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 2217-14, Hayashi-cho, Takamatsu, Kagawa, 761-0395, Japan, Nanotube Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1, Higashi, Tsukuba, 305-8565, Japan, and Department of Environmental Systems Engineering, Graduate School of Engineering, Kochi University of Technology, Tosayamada-cho, Kochi, 782-8502, Japan
| | - Toshihiko Ooie
- Health Technology Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 2217-14, Hayashi-cho, Takamatsu, Kagawa, 761-0395, Japan, Nanotube Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1, Higashi, Tsukuba, 305-8565, Japan, and Department of Environmental Systems Engineering, Graduate School of Engineering, Kochi University of Technology, Tosayamada-cho, Kochi, 782-8502, Japan
| | - Hiroshi Frusawa
- Health Technology Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 2217-14, Hayashi-cho, Takamatsu, Kagawa, 761-0395, Japan, Nanotube Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1, Higashi, Tsukuba, 305-8565, Japan, and Department of Environmental Systems Engineering, Graduate School of Engineering, Kochi University of Technology, Tosayamada-cho, Kochi, 782-8502, Japan
| | - Masumi Asakawa
- Health Technology Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 2217-14, Hayashi-cho, Takamatsu, Kagawa, 761-0395, Japan, Nanotube Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1, Higashi, Tsukuba, 305-8565, Japan, and Department of Environmental Systems Engineering, Graduate School of Engineering, Kochi University of Technology, Tosayamada-cho, Kochi, 782-8502, Japan
| | - Toshimi Shimizu
- Health Technology Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 2217-14, Hayashi-cho, Takamatsu, Kagawa, 761-0395, Japan, Nanotube Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1, Higashi, Tsukuba, 305-8565, Japan, and Department of Environmental Systems Engineering, Graduate School of Engineering, Kochi University of Technology, Tosayamada-cho, Kochi, 782-8502, Japan
| | - Mitsuru Ishikawa
- Health Technology Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 2217-14, Hayashi-cho, Takamatsu, Kagawa, 761-0395, Japan, Nanotube Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1, Higashi, Tsukuba, 305-8565, Japan, and Department of Environmental Systems Engineering, Graduate School of Engineering, Kochi University of Technology, Tosayamada-cho, Kochi, 782-8502, Japan
| |
Collapse
|
30
|
Shimizu T. Molecular Self-Assembly into One-Dimensional Nanotube Architectures and Exploitation of Their Functions. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2008. [DOI: 10.1246/bcsj.81.1554] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
|
31
|
GAO WY, YU ZW. New Features on the Phase Transitions of Behenic Acid Monolayers as Unveiled by 2D-Compressibility Coefficient. CHINESE J CHEM 2008. [DOI: 10.1002/cjoc.200890288] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
32
|
Abstract
To date, a wide range of industrial materials such as solvents, fuels, synthetic fibers, and chemical products are being manufactured from petroleum resources. However, rapid depletion of fossil and petroleum resources is encouraging current and future chemists to orient their research toward designing safer chemicals, products, and processes from renewable feedstock with an increased awareness of environmental and industrial impact. Advances in genetics, biotechnology, process chemistry, and engineering are leading to a new manufacturing concept for converting renewable biomass to valuable fuels and products, generally known as the biorefinery concept. The swift integration of crop-based materials synthesis and biorefinery manufacturing technologies offers the potential for new advances in sustainable energy alternatives and biomaterials that will lead to a new manufacturing paradigm. This Account presents a novel and emerging concept of generating various forms of soft materials from crops (an alternate feedstock). In future research, developing biobased soft materials will be a fascinating yet demanding practice, which will have direct impact on industrial applications as an economically viable alternative. Here we discuss some remarkable examples of glycolipids generated from industrial byproducts such as cashew nut shell liquid, which upon self-assembly produced soft nanoarchitectures including lipid nanotubes, twisted/helical nanofibers, low-molecular-weight gels, and liquid crystals. Synthetic methods applied to a "chiral pool" of carbohydrates using the selectivity of enzyme catalysis yield amphiphilic products derived from biobased feedstock including amygdalin, trehalose, and vitamin C. This has been achieved with a lipase-mediated regioselective synthetic procedure to obtain such amphiphiles in quantitative yields. Amygdalin amphiphiles showed unique gelation behavior in a broad range of solvents such as nonpolar hexanes to polar aqueous solutions. Importantly, an enzyme triggered drug-delivery model for hydrophobic drugs was demonstrated by using these supramolecularly assembled hydrogels. Following a similar biocatalytic approach, vitamin C amphiphiles were synthesized with different hydrocarbon chain lengths, and their ability to self-assemble into molecular gels and liquid crystals has been studied in detail. Such biobased soft materials were successfully used to develop novel organic-inorganic hybrid materials by in situ synthesis of metal nanoparticles. The self-assembled soft materials were characterized by several spectroscopic techniques, UV-visible, infrared, and fluorescence spectrophotometers, as well as microscopic methods including polarized optical, confocal, scanning, and transmission electron microscopes, and thermal analysis. The molecular packing of the hierarchically assembled bilayer membranes was fully elucidated by X-ray analysis. We envision that the results summarized in this Account will encourage interdisciplinary collaboration between scientists in the fields of organic synthesis, soft materials research, and green chemistry to develop functional materials from underutilized crop-based renewable feedstock, with innovation driven both by material needs and environmentally benign design principles.
Collapse
Affiliation(s)
- Praveen Kumar Vemula
- Department of Chemistry, The City College of New York, and The Graduate School and University Center, The City University of New York, New York, New York 10031
| | - George John
- Department of Chemistry, The City College of New York, and The Graduate School and University Center, The City University of New York, New York, New York 10031
| |
Collapse
|
33
|
Kameta N, Masuda M, Mizuno G, Morii N, Shimizu T. Supramolecular nanotube endo sensing for a guest protein. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2008; 4:561-5. [PMID: 18384039 DOI: 10.1002/smll.200700710] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Affiliation(s)
- Naohiro Kameta
- SORST, Japan Science and Technology Agency (JST) Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan.
| | | | | | | | | |
Collapse
|
34
|
Yui H, Minamikawa H, Danev R, Nagayama K, Kamiya S, Shimizu T. Growth process and molecular packing of a self-assembled lipid nanotube: phase-contrast transmission electron microscopy and XRD analyses. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:709-713. [PMID: 18179267 DOI: 10.1021/la702488u] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Phase-contrast transmission electron microscopy (PC-TEM) and quick freezing method have been combined to study the initial growing process of a self-assembled lipid nanotube in water. The PC-TEM enabled us to detect thin lamellar edge structure and the very fast growth of the newborn edge to a thin tube with high contrast. The thin tube acts as a core structure for further growth into thick complete lipid nanotube. The initially formed nanotube structure is denoted as a "core tube". The core tube has uniform wall structure that consists of five lamellar layers and the inner and outer diameters of the core tube are 130 and 180 nm, respectively. The evaluated lamellar spacing of 4.6 nm is well compatible with that measured by X-ray diffraction. We also discussed the molecular packing of the nanotube from the pitch angle determined by the PC-TEM images, X-ray diffraction pattern in wide-angle region, and IR spectroscopy. The subcell structure of the nanotube is assigned to an orthorhombic type. The twisting angle between the neighboring lipid molecules is determined as ca. 0.26 degrees for the first time; it is a crucial parameter for the formation of a lipid nanotube in chiral packing but has not been elucidated before.
Collapse
Affiliation(s)
- Hiroharu Yui
- Department of Chemistry, Faculty of Science, Tokyo University of Science (TUS), Funagawara-machi 12, Ichigaya, Shinjuku-ku, Tokyo 162-0826, Japan
| | | | | | | | | | | |
Collapse
|
35
|
|
36
|
Nogawa K, Tagawa Y, Nakajima M, Arai F, Shimizu T, Kamiya S, Fukuda T. Development of Novel Nanopipette with a Lipid Nanotube as Nanochannel. JOURNAL OF ROBOTICS AND MECHATRONICS 2007. [DOI: 10.20965/jrm.2007.p0528] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Single cell analysis gets a lot of attentions to reveal the unknown biological aspects of individual cells. To analyze the properties of a single cell, local environmental control is desired. We propose a novel nanopipette where a lipid nanotube (LNT) as a nanochannel is attached to apply the minimal changes to the environment. LNTs have hollow cylindrical nanostructures consisting of lipid bilayer membranes and their outer and inner surfaces are hydrophilic. Fabrication process of the LNT nanopipette includes two main parts; picking up an LNT and sealing the interspace between it and the glass micropipette. The fluorescent solution was spouted from the fabricated LNT nanopipette. The nanopipette is effective to local environmental control as an end-effecter for biological applications.
Collapse
|
37
|
|
38
|
Mondal SK, Ghosh S, Sahu K, Mandal U, Bhattacharyya K. Ultrafast fluorescence resonance energy transfer in a reverse micelle: Excitation wavelength dependence. J Chem Phys 2006; 125:224710. [PMID: 17176157 DOI: 10.1063/1.2403131] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Fluorescence resonance energy transfer (FRET) from coumarin 480 (C480) to fluorescein 548 (F548) in a sodium dioctyl sulfosuccinate (AOT) reverse micelle is studied by picosecond and femtosecond emission spectroscopy. In bulk water, at the low concentration of the donor (C480) and the acceptor (F548), no FRET is observed. However, when the donor (C480) and the acceptor (F548) are confined in a AOT reverse micelle very fast FRET is observed. The time constants of FRET were obtained from the rise time of the emission of the acceptor (F548). In a AOT microemulsion, FRET is found to occur in multiple time scales--3, 200, and 2700 ps. The 3 ps component is assigned to FRET in the water pool of the reverse micelle with a donor-acceptor distance, 16 A. The 200 ps component corresponds to a donor-acceptor distance of 30 A and is ascribed to the negatively charged acceptor inside the water pool and the neutral donor inside the alkyl chains of AOT. The very long 2700 ps component may arise due to FRET from a donor outside the micelle to an acceptor inside the water pool and also from diffusion of the donor from bulk heptane to the reverse micelle. With increase in the excitation wavelength from 375 to 405 nm the relative contribution of the FRET due to C480 in the AOT reverse micelle (the 3 and 200 ps components) increases.
Collapse
Affiliation(s)
- Sudip Kumar Mondal
- Physical Chemistry Department, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
| | | | | | | | | |
Collapse
|
39
|
Thomas AC, Richardson HH. 2D-IR correlation analysis of thin film water adsorbed on α-Al2O3(0001). J Mol Struct 2006. [DOI: 10.1016/j.molstruc.2006.03.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
40
|
Byl O, Liu JC, Wang Y, Yim WL, Johnson JK, Yates JT. Unusual Hydrogen Bonding in Water-Filled Carbon Nanotubes. J Am Chem Soc 2006; 128:12090-7. [PMID: 16967958 DOI: 10.1021/ja057856u] [Citation(s) in RCA: 156] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
We present the first experimental vibrational spectroscopy study providing direct evidence of a water phase inside single-walled carbon nanotubes that exhibits an unusual form of hydrogen-bonding due to confinement. Water adopts a stacked-ring structure inside nanotubes, forming intra- and inter-ring hydrogen bonds. The intra-ring hydrogen bonds are bulk-like while the inter-ring hydrogen bonds are relatively weak, having a distorted geometry that gives rise to a distinct OH stretching mode. The experimentally observed infrared mode at 3507 cm(-1) is assigned to vibrations of the inter-ring OH-groups based on detailed atomic-level modeling. The direct observation of unusual hydrogen bonding in nanotubes has potential implications for water in other highly confined systems, such as biological channels and nanoporous media.
Collapse
Affiliation(s)
- Oleg Byl
- Department of Chemistry, Surface Science Center, University of Pittsburgh, Pennsylvania 15260, USA
| | | | | | | | | | | |
Collapse
|
41
|
Ji Q, Kamiya S, Shimizu T. Confined Sol–Gel Reaction Using a Neutral Glycolipid Nanotube as a Template: Aqueous Fabrication of Titania Rod Structures. CHEM LETT 2006. [DOI: 10.1246/cl.2006.394] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
42
|
Shimizu T. Self-assembled lipid nanotube hosts: The dimension control for encapsulation of nanometer-scale guest substances. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/pola.21619] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
43
|
Shimizu T, Masuda M, Minamikawa H. Supramolecular Nanotube Architectures Based on Amphiphilic Molecules. Chem Rev 2005; 105:1401-43. [PMID: 15826016 DOI: 10.1021/cr030072j] [Citation(s) in RCA: 1326] [Impact Index Per Article: 69.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Toshimi Shimizu
- Nanoarchitectonics Research Center, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | | | | |
Collapse
|
44
|
Affiliation(s)
- Hiroharu YUI
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo
- Department of Chemistry, Faculty of Science devision I, Tokyo University of Science
| | - Tsuguo SAWADA
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo
- Department of Chemical Engineering, Faculty of Technology, Tokyo University of Agriculture and Technology
| |
Collapse
|