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Kojima K, Kosugi N, Jintoku H, Kobashi K, Okazaki T. Preparing a liquid crystalline dispersion of carbon nanotubes with high aspect ratio. Beilstein J Org Chem 2024; 20:52-58. [PMID: 38230355 PMCID: PMC10790658 DOI: 10.3762/bjoc.20.7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Accepted: 12/29/2023] [Indexed: 01/18/2024] Open
Abstract
We successfully prepared a surfactant-assisted carbon nanotube (CNT) liquid crystal (LC) dispersion with double-walled CNTs (DWCNTs) having a high aspect ratio (≈1378). Compared to dispersions of single-walled CNTs (SWCNTs) with lower aspect ratio, the transition concentrations from isotropic phase to biphasic state, and from biphasic state to nematic phase are lowered, which is consistent with the predictions of the Onsager theory. An aligned DWCNT film was prepared from the DWCNT dispersion by a simple bar-coating method. Regardless of the higher aspect ratio, the order parameter obtained from the film is comparable to that from SWCNTs with lower aspect ratios. This finding implies that precise control of the film formation process, including a proper selection of substrate and deposition/drying steps, is crucial to maximize the CNT-LC utilization.
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Affiliation(s)
- Keiko Kojima
- Nano Carbon Device Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba 305-8565, Japan
| | - Nodoka Kosugi
- Nano Carbon Device Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba 305-8565, Japan
- Department of Chemistry, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8571, Japan
| | - Hirokuni Jintoku
- Nano Carbon Device Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba 305-8565, Japan
| | - Kazufumi Kobashi
- Nano Carbon Device Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba 305-8565, Japan
| | - Toshiya Okazaki
- Nano Carbon Device Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba 305-8565, Japan
- Department of Chemistry, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8571, Japan
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2
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Zhang Z, Yang X, Zhao Y, Ye F, Shang L. Liquid Crystal Materials for Biomedical Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2300220. [PMID: 37235719 DOI: 10.1002/adma.202300220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Revised: 04/04/2023] [Indexed: 05/28/2023]
Abstract
Liquid crystal is a state of matter being intermediate between solid and liquid. Liquid crystal materials exhibit both orientational order and fluidity. While liquid crystals have long been highly recognized in the display industry, in recent decades, liquid crystals provide new opportunities into the cross-field of material science and biomedicine due to their biocompatibility, multifunctionality, and responsiveness. In this review, the latest achievements of liquid crystal materials applied in biomedical fields are summarized. The start is made by introducing the basic concepts of liquid crystals, and then shifting to the components of liquid crystals as well as functional materials derived therefrom. After that, the ongoing and foreseeable applications of liquid crystal materials in the biomedical field with emphasis put on several cutting-edge aspects, including drug delivery, bioimaging, tissue engineering, implantable devices, biosensing, and wearable devices are discussed. It is hoped that this review will stimulate ingenious ideas for the future generation of liquid crystal-based drug development, artificial implants, disease diagnosis, health status monitoring, and beyond.
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Affiliation(s)
- Zhuohao Zhang
- Shanghai Xuhui Central Hospital, Zhongshan-Xuhui Hospital, and the Shanghai Key Laboratory of Medical Epigenetics, the International Co-laboratory of Medical Epigenetics and Metabolism (Ministry of Science and Technology), Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China
| | - Xinyuan Yang
- Shanghai Xuhui Central Hospital, Zhongshan-Xuhui Hospital, and the Shanghai Key Laboratory of Medical Epigenetics, the International Co-laboratory of Medical Epigenetics and Metabolism (Ministry of Science and Technology), Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China
| | - Yuanjin Zhao
- Shanghai Xuhui Central Hospital, Zhongshan-Xuhui Hospital, and the Shanghai Key Laboratory of Medical Epigenetics, the International Co-laboratory of Medical Epigenetics and Metabolism (Ministry of Science and Technology), Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China
- Department of Rheumatology and Immunology, Nanjing Drum Tower Hospital, School of Biological Science and Medical Engineering Southeast University, Nanjing, 210096, China
| | - Fangfu Ye
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325001, China
| | - Luoran Shang
- Shanghai Xuhui Central Hospital, Zhongshan-Xuhui Hospital, and the Shanghai Key Laboratory of Medical Epigenetics, the International Co-laboratory of Medical Epigenetics and Metabolism (Ministry of Science and Technology), Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China
- Department of Rheumatology and Immunology, Nanjing Drum Tower Hospital, School of Biological Science and Medical Engineering Southeast University, Nanjing, 210096, China
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Noor MM, Santana-Pereira ALR, Liles MR, Davis VA. Dispersant Effects on Single-Walled Carbon Nanotube Antibacterial Activity. Molecules 2022; 27:molecules27051606. [PMID: 35268706 PMCID: PMC8911888 DOI: 10.3390/molecules27051606] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Revised: 02/13/2022] [Accepted: 02/22/2022] [Indexed: 11/16/2022] Open
Abstract
There is significant interest in understanding whether nanomaterials with outstanding mechanical or electrical properties also possess antibacterial properties. However, assessment of antibacterial activity is a complex problem at the interface of chemistry and microbiology. Results can be affected by many factors including nanomaterial size, surface chemistry, concentration, and the dispersion media. The difficulty of dispersing nanomaterials such as single-walled carbon nanotubes (SWNTs) has resulted in many studies being conducted in the presence of dispersion aides which may themselves contribute to bacterial stress. The recent discovery that a standard microbial growth media, tryptic soy broth (TSB), is an effective SWNT dispersant provides a new opportunity to investigate the potential antibacterial activity of SWNTs using dispersants that range from antibacterial to growth-supporting. The five dispersants chosen for this work were Sodium dodecyl sulfate (SDS), pluronic, lysozyme, DNA, and tryptic soy broth. Staphylococcus aureus and Salmonella enterica were used as the model Gram-positive and Gram-negative bacteria. Activity was measured in terms of colony forming unit (CFU) and optical density measurements. None of the systems exhibited activity against Salmonella. SDS was fatal to Staph. aureus regardless of the presence of SWNTs. The activity of pluronic and lysozyme against Staph. aureus was enhanced by the presence of SWNTs. In contrast, the DNA and TSB dispersions did not have any activity regardless of the presence of SWNTs. These results highlight that the purported antibacterial activity of SWNTs may only be effective against bacteria that are sensitized by the dispersant and suggests the need for additional research on the mechanisms by which SWNT-dispersant interactions can result in antibacterial activity.
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Affiliation(s)
- Matthew M. Noor
- Department of Chemical Engineering, Auburn University, Auburn, AL 36849, USA;
| | | | - Mark R. Liles
- Department of Biological Sciences, Auburn University, Auburn, AL 36849, USA; (A.L.R.S.-P.); (M.R.L.)
| | - Virginia A. Davis
- Department of Chemical Engineering, Auburn University, Auburn, AL 36849, USA;
- Correspondence:
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4
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Jamali V, Mirri F, Biggers EG, Pinnick RA, Liberman L, Cohen Y, Talmon Y, MacKintosh FC, van der Schoot P, Pasquali M. Enhanced ordering in length-polydisperse carbon nanotube solutions at high concentrations as revealed by small angle X-ray scattering. SOFT MATTER 2021; 17:5122-5130. [PMID: 33735362 DOI: 10.1039/d0sm02253e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Carbon nanotubes (CNTs) are stiff, all-carbon macromolecules with diameters as small as one nanometer and few microns long. Solutions of CNTs in chlorosulfonic acid (CSA) follow the phase behavior of rigid rod polymers interacting via a repulsive potential and display a liquid crystalline phase at sufficiently high concentration. Here, we show that small-angle X-ray scattering and polarized light microscopy data can be combined to characterize quantitatively the morphology of liquid crystalline phases formed in CNT solutions at concentrations from 3 to 6.5% by volume. We find that upon increasing their concentration, CNTs self-assemble into a liquid crystalline phase with a pleated texture and with a large inter-particle spacing that could be indicative of a transition to higher-order liquid crystalline phases. We explain how thermal undulations of CNTs can enhance their electrostatic repulsion and increase their effective diameter by an order of magnitude. By calculating the critical concentration, where the mean amplitude of undulation of an unconstrained rod becomes comparable to the rod spacing, we find that thermal undulations start to affect steric forces at concentrations as low as the isotropic cloud point in CNT solutions.
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Affiliation(s)
- Vida Jamali
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, USA.
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5
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Wu SJ, Schuergers N, Lin KH, Gillen AJ, Corminboeuf C, Boghossian AA. Restriction Enzyme Analysis of Double-Stranded DNA on Pristine Single-Walled Carbon Nanotubes. ACS APPLIED MATERIALS & INTERFACES 2018; 10:37386-37395. [PMID: 30277379 DOI: 10.1021/acsami.8b12287] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Nanoprobes such as single-walled carbon nanotubes (SWCNTs) are capable of label-free detection that benefits from intrinsic and photostable near-infrared fluorescence. Despite the growing number of SWCNT-based applications, uncertainty surrounding the nature of double-stranded DNA (dsDNA) immobilization on pristine SWCNTs has limited their use as optical sensors for probing DNA-protein interactions. To address this limitation, we study enzyme activity on unmodified dsDNA strands immobilized on pristine SWCNTs. Restriction enzyme activity on various dsDNA sequences was used to verify the retention of the dsDNA's native conformation on the nanotube surface and to quantitatively compare the degree of dsDNA accessibility. We report a 2.8-fold enhancement in initial enzyme activity in the presence of surfactants. Förster resonance electron transfer (FRET) analysis attributes this enhancement to increased dsDNA displacement from the SWCNT surface. Furthermore, the accessibility of native dsDNA was found to vary with DNA configuration and the spacing between the restriction site and the nanotube surface, with a minimum spacing of four base pairs (bp) from the anchoring site needed to preserve enzyme activity. Molecular dynamics (MD) simulations verify that the anchored dsDNA remains within the vicinity of the SWCNT, revealing an unprecedented bimodal displacement of the bp nearest to SWCNT surface. Together, these findings illustrate the successful immobilization of native dsDNA on pristine SWCNTs, offering a new near-infrared platform for exploring vital DNA processes.
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Affiliation(s)
- Shang-Jung Wu
- Institute of Chemical Sciences and Engineering (ISIC) , École Polytechnique Fédérale de Lausanne (EPFL) , Lausanne CH-1015 , Switzerland
| | - Nils Schuergers
- Institute of Chemical Sciences and Engineering (ISIC) , École Polytechnique Fédérale de Lausanne (EPFL) , Lausanne CH-1015 , Switzerland
| | - Kun-Han Lin
- Institute of Chemical Sciences and Engineering (ISIC) , École Polytechnique Fédérale de Lausanne (EPFL) , Lausanne CH-1015 , Switzerland
| | - Alice J Gillen
- Institute of Chemical Sciences and Engineering (ISIC) , École Polytechnique Fédérale de Lausanne (EPFL) , Lausanne CH-1015 , Switzerland
| | - Clémence Corminboeuf
- Institute of Chemical Sciences and Engineering (ISIC) , École Polytechnique Fédérale de Lausanne (EPFL) , Lausanne CH-1015 , Switzerland
| | - Ardemis A Boghossian
- Institute of Chemical Sciences and Engineering (ISIC) , École Polytechnique Fédérale de Lausanne (EPFL) , Lausanne CH-1015 , Switzerland
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6
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Zhang S, Pelligra CI, Feng X, Osuji CO. Directed Assembly of Hybrid Nanomaterials and Nanocomposites. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1705794. [PMID: 29520839 DOI: 10.1002/adma.201705794] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 11/22/2017] [Indexed: 05/19/2023]
Abstract
Hybrid nanomaterials are molecular or colloidal-level combinations of organic and inorganic materials, or otherwise strongly dissimilar materials. They are often, though not exclusively, anisotropic in shape. A canonical example is an inorganic nanorod or nanosheet sheathed in, or decorated by, a polymeric or other organic material, where both the inorganic and organic components are important for the properties of the system. Hybrid nanomaterials and nanocomposites have generated strong interest for a broad range of applications due to their functional properties. Generating macroscopic assemblies of hybrid nanomaterials and nanomaterials in nanocomposites with controlled orientation and placement by directed assembly is important for realizing such applications. Here, a survey of critical issues and themes in directed assembly of hybrid nanomaterials and nanocomposites is provided, highlighting recent efforts in this field with particular emphasis on scalable methods.
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Affiliation(s)
- Shanju Zhang
- Department of Chemistry and Biochemistry, California Polytechnic State University, San Luis Obispo, CA, 93407, USA
| | - Candice I Pelligra
- Department of Chemical and Environmental Engineering, Yale University, New Haven, CT, 06511, USA
| | - Xunda Feng
- Department of Chemical and Environmental Engineering, Yale University, New Haven, CT, 06511, USA
| | - Chinedum O Osuji
- Department of Chemical and Environmental Engineering, Yale University, New Haven, CT, 06511, USA
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7
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Haywood AD, Weigandt KM, Saha P, Noor M, Green MJ, Davis VA. New insights into the flow and microstructural relaxation behavior of biphasic cellulose nanocrystal dispersions from RheoSANS. SOFT MATTER 2017; 13:8451-8462. [PMID: 29087424 DOI: 10.1039/c7sm00685c] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Cellulose nanocrystals (CNC) have been studied as nanostructured building blocks for functional materials and function as a model nanomaterial mesogen for cholesteric (chiral nematic) liquid crystalline phases. In this study, both rheology and small angle neutron scattering (RheoSANS) were used to measure changes in flow-oriented order parameter and viscosity as a function of shear rate for isotropic, biphasic, liquid crystalline, and gel dispersions of CNC in deuterium oxide (D2O). In contrast to plots of viscosity versus shear rate, the order parameter trends showed three distinct rheological regions over a range of concentrations. This finding is significant because the existence of three rheological regions as a function of shear rate is a long-standing signature of liquid crystalline phases composed of rod-like polymers, but observing this trend has been elusive for high-concentration dispersions of anisotropic nanomaterials. The results of this work are valuable for guiding the development of processing methodologies for producing ordered materials from CNC dispersions and the broader class of chiral nanomaterial mesogens.
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Affiliation(s)
- Alexander D Haywood
- Department of Chemical Engineering, Auburn University, Auburn, Alabama 36849, USA.
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8
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Gooneie A, Sapkota J, Shirole A, Holzer C. Length controlled kinetics of self-assembly of bidisperse nanotubes/nanorods in polymers. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.05.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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9
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Concentration of lysozyme/single-walled carbon nanotube dispersions. Colloids Surf B Biointerfaces 2016; 139:237-43. [DOI: 10.1016/j.colsurfb.2015.11.040] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 11/19/2015] [Accepted: 11/20/2015] [Indexed: 12/26/2022]
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10
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KURAPATI RAJENDRA, REDDY UVENKATESWARA, RAICHUR ASHOKM, SURYAPRAKASH N. Facile synthesis of Graphene Oxide/Double-stranded DNA composite liquid crystals and Hydrogels. J CHEM SCI 2016. [DOI: 10.1007/s12039-016-1043-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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11
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Ha JM, Jang HS, Lim SH, Choi SM. Selective distributions of functionalized single-walled carbon nanotubes in a polymeric reverse hexagonal phase. SOFT MATTER 2015; 11:5821-5827. [PMID: 26059259 DOI: 10.1039/c5sm00355e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We have investigated the distributions of individually isolated and hydrophilically functionalized single-walled carbon nanotubes (p-SWNTs) in the Pluronic L121-water system at the reverse hexagonal phase using small-angle X-ray scattering (SAXS) and contrast-matched small-angle neutron scattering (SANS) measurements. As the p-SWNT-L121-water system is transitioned from the lamellar phase to the reverse hexagonal phase with temperature, p-SWNTs which were selectively distributed in the polar layers of the lamellar structure become selectively distributed in the cylindrical polar cores of the reverse hexagonal structure, forming a hexagonal array of p-SWNTs. This was clearly confirmed by the contrast-matched SANS measurements. The selective distribution of p-SWNTs in the reverse hexagonal phase is driven by the selective affinity of p-SWNTs to the polar domains of the block copolymer system. The method demonstrated in this study provides a new route for fabricating ordered SWNT superstructures and may be applicable for inorganic 1D nanoparticles such as semiconducting, metallic and magnetic nanorods which are of great interest.
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Affiliation(s)
- Jae-Min Ha
- Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon, 305-701, Republic of Korea.
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12
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Umemura K. Hybrids of Nucleic Acids and Carbon Nanotubes for Nanobiotechnology. NANOMATERIALS (BASEL, SWITZERLAND) 2015; 5:321-350. [PMID: 28347014 PMCID: PMC5312852 DOI: 10.3390/nano5010321] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 02/25/2015] [Accepted: 03/05/2015] [Indexed: 12/17/2022]
Abstract
Recent progress in the combination of nucleic acids and carbon nanotubes (CNTs) has been briefly reviewed here. Since discovering the hybridization phenomenon of DNA molecules and CNTs in 2003, a large amount of fundamental and applied research has been carried out. Among thousands of papers published since 2003, approximately 240 papers focused on biological applications were selected and categorized based on the types of nucleic acids used, but not the types of CNTs. This survey revealed that the hybridization phenomenon is strongly affected by various factors, such as DNA sequences, and for this reason, fundamental studies on the hybridization phenomenon are important. Additionally, many research groups have proposed numerous practical applications, such as nanobiosensors. The goal of this review is to provide perspective on biological applications using hybrids of nucleic acids and CNTs.
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Affiliation(s)
- Kazuo Umemura
- Biophysics Section, Department of Physics, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo 1628601, Japan.
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13
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Yevdokimov YM, Salyanov VI, Skuridin SG, Shtykova EV, Khlebtsov NG, Kats EI. Physicochemical and nanotechnological approaches to the design of 'rigid' spatial structures of DNA. RUSSIAN CHEMICAL REVIEWS 2015. [DOI: 10.1070/rcr4454] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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14
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15
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Xu T, Davis VA. Liquid crystalline phase behavior of silica nanorods in dimethyl sulfoxide and water. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:4806-4813. [PMID: 24730665 DOI: 10.1021/la405013h] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We report lyotropic smectic liquid crystalline phase behavior of silica nanorods dispersed in binary mixtures of dimethyl sulfoxide (DMSO) and water (H2O). The phase behavior is affected by nanorod size polydispersity and DMSO concentration in the binary solvent. The isotropic to biphasic transition is strongly affected by the relative amount of DMSO in the solvent, but the solvent has little effect on the biphasic to liquid crystal transition above 40/60 DMSO/H2O by volume. At less than 40% DMSO, increasing silica nanorod concentration initially results in the formation of liquid crystalline domains, but further increasing silica concentration results in crystal solvate formation. The morphology of the liquid crystalline phase is strongly affected by the size polydispersity, with lower polydispersity leading to a more uniform structure. As in other lyotropic nanocylinder systems, the microstructure of continuous solid films produced from the dispersions was affected by both the initial microstructure and the applied shear.
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Affiliation(s)
- Teng Xu
- Department of Chemical Engineering, Auburn University , Auburn, Alabama 36849, United States
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16
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Wang Y, Gao J, Dingemans TJ, Madsen LA. Molecular Alignment and Ion Transport in Rigid Rod Polyelectrolyte Solutions. Macromolecules 2014. [DOI: 10.1021/ma500364t] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Ying Wang
- Department
of Chemistry and Macromolecules and Interfaces Institute, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Jianwei Gao
- Faculty of Aerospace Engineering, Delft University of Technology, Kluyverweg
1, 2629
HS, Delft, The Netherlands
| | - Theo J. Dingemans
- Faculty of Aerospace Engineering, Delft University of Technology, Kluyverweg
1, 2629
HS, Delft, The Netherlands
| | - Louis A. Madsen
- Department
of Chemistry and Macromolecules and Interfaces Institute, Virginia Tech, Blacksburg, Virginia 24061, United States
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17
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Nyankima AG, Horn DW, Davis VA. Free-Standing Films from Aqueous Dispersions of Lysozyme, Single-Walled Carbon Nanotubes, and Polyvinyl Alcohol. ACS Macro Lett 2014; 3:77-79. [PMID: 35651113 DOI: 10.1021/mz400395j] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Transparent antibacterial films were produced by casting concentrated dispersions of lysozyme (LSZ), single-walled carbon nanotubes (SWNTs), and polyvinyl alcohol (PVA). The initial SWNT dispersion state had a significant influence on the films' mechanical properties. Films containing 9 wt % bundled SWNTs had six times higher Young's modulus than control films produced without SWNTs. Removal of SWNT bundles by centrifugation prior to concentrating the dispersions resulted in films that contained only 4.5 wt % SWNT but had over eight times higher Young's modulus than the control films.
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Affiliation(s)
- A. Gloria Nyankima
- Department of Chemical Engineering, Auburn University, 212 Ross
Hall, Auburn, Alabama 36849, United States
| | - Daniel W. Horn
- Department of Chemical Engineering, Auburn University, 212 Ross
Hall, Auburn, Alabama 36849, United States
| | - Virginia A. Davis
- Department of Chemical Engineering, Auburn University, 212 Ross
Hall, Auburn, Alabama 36849, United States
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18
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Olivier JH, Deria P, Park J, Kumbhar A, Andrian-Albescu M, Therien MJ. Ionic Self-Assembly Provides Dense Arrays of Individualized, Aligned Single-Walled Carbon Nanotubes. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201307256] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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19
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Olivier JH, Deria P, Park J, Kumbhar A, Andrian-Albescu M, Therien MJ. Ionic Self-Assembly Provides Dense Arrays of Individualized, Aligned Single-Walled Carbon Nanotubes. Angew Chem Int Ed Engl 2013; 52:13080-5. [DOI: 10.1002/anie.201307256] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2013] [Indexed: 11/09/2022]
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20
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Luo Z, Song H, Feng X, Run M, Cui H, Wu L, Gao J, Wang Z. Liquid crystalline phase behavior and sol-gel transition in aqueous halloysite nanotube dispersions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:12358-12366. [PMID: 24070131 DOI: 10.1021/la402836d] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The liquid crystalline phase behavior and sol-gel transition in halloysite nanotubes (HNTs) aqueous dispersions have been investigated by applying polarized optical microscopy (POM), macroscopic observation, rheometer, small-angle X-ray scattering, scanning electron microscopy, and transmission electron microscopy. The liquid crystalline phase starts to form at the HNT concentration of 1 wt %, and a full liquid crystalline phase forms at the HNT concentration of 25 wt % as observed by POM and macroscopic observation. Rheological measurements indicate a typical shear flow behavior for the HNT aqueous dispersions with concentrations above 20 wt % and further confirm that the sol-gel transition occurs at the HNT concentration of 37 wt %. Furthermore, the HNT aqueous dispersions exhibit pH-induced gelation with more intense birefringence when hydrochloric acid (HCl) is added. The above findings shed light on the phase behaviors of diversely topological HNTs and lay the foundation for fabrication of the long-range ordered nano-objects.
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Affiliation(s)
- Zhiqiang Luo
- College of Chemistry & Environmental Science, Hebei University , Baoding, Hebei Province 071002, China
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21
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Qiu X, Khripin CY, Ke F, Howell SC, Zheng M. Electrostatically driven interactions between hybrid DNA-carbon nanotubes. PHYSICAL REVIEW LETTERS 2013; 111:048301. [PMID: 23931412 DOI: 10.1103/physrevlett.111.048301] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2013] [Indexed: 06/02/2023]
Abstract
Single-stranded DNA is able to wrap around single-wall carbon nanotubes (CNT) and form stable DNA-CNT hybrids that are highly soluble in solution. Here we report quantitative measurements and analysis of the interactions between DNA-CNT hybrids at low salts. Condensation of DNA-CNT hybrids by neutral osmolytes leads to liquid crystalline phases, and varying the osmotic pressure modulates the interhybrid distance that is determined by x-ray diffraction. Thus obtained force-distance dependencies of DNA-CNT hybrids show a remarkable resemblance to that of double-stranded DNA with differences that can be largely accounted for by their different diameters. This establishes their common physical nature of electrostatically driven interactions. Quantitative modeling further reveals the roles of hydration in mediating the interhybrid forces within the last nanometer of surface separation. This study also suggests the utility of osmotic pressure to control DNA-CNT assemblies at subnanometer precision.
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Affiliation(s)
- Xiangyun Qiu
- Department of Physics, George Washington University, Washington, D.C. 20052, USA.
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Affiliation(s)
- Joseph B. Miller
- Department of Physics and Department of Coatings and Polymeric Materials; North Dakota State University; Fargo North Dakota 58108
| | - Erik K. Hobbie
- Department of Physics and Department of Coatings and Polymeric Materials; North Dakota State University; Fargo North Dakota 58108
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Tardani F, Strobbia P, Scipioni A, La Mesa C. Encapsulating carbon nanotubes in aqueous ds-DNA anisotropic phases: shear orientation and rheological properties. RSC Adv 2013. [DOI: 10.1039/c3ra44920c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Green MJ. Isotropic-nematic phase separation and demixing in mixtures of spherical nanoparticles with length-polydisperse nanorods. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/polb.23126] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Dan B, Ma AWK, Hároz EH, Kono J, Pasquali M. Nematic-Like Alignment in SWNT Thin Films from Aqueous Colloidal Suspensions. Ind Eng Chem Res 2012. [DOI: 10.1021/ie3001925] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Budhadipta Dan
- Department of Physics and Astronomy, §Department of Chemical and Biomolecular Engineering, ⊥Department of Electrical and Computer Engineering, #Department of Chemistry, and ‡R.E. Smalley Institute for Nanoscale Science & Technology, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Anson W. K. Ma
- Department of Physics and Astronomy, §Department of Chemical and Biomolecular Engineering, ⊥Department of Electrical and Computer Engineering, #Department of Chemistry, and ‡R.E. Smalley Institute for Nanoscale Science & Technology, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Erik H. Hároz
- Department of Physics and Astronomy, §Department of Chemical and Biomolecular Engineering, ⊥Department of Electrical and Computer Engineering, #Department of Chemistry, and ‡R.E. Smalley Institute for Nanoscale Science & Technology, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Junichiro Kono
- Department of Physics and Astronomy, §Department of Chemical and Biomolecular Engineering, ⊥Department of Electrical and Computer Engineering, #Department of Chemistry, and ‡R.E. Smalley Institute for Nanoscale Science & Technology, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Matteo Pasquali
- Department of Physics and Astronomy, §Department of Chemical and Biomolecular Engineering, ⊥Department of Electrical and Computer Engineering, #Department of Chemistry, and ‡R.E. Smalley Institute for Nanoscale Science & Technology, Rice University, 6100 Main Street, Houston, Texas 77005, United States
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Premkumar T, Mezzenga R, Geckeler KE. Carbon nanotubes in the liquid phase: addressing the issue of dispersion. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2012; 8:1299-1313. [PMID: 22431156 DOI: 10.1002/smll.201101786] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2011] [Revised: 11/01/2011] [Indexed: 05/31/2023]
Abstract
The inherent size and hollow geometry with extraordinary electronic and optical properties make carbon nanotubes (CNTs) promising building blocks for molecular or nanoscale devices. Unfortunately, their hydrophobic nature and their existence in the form of agglomerated and parallel bundles make this interesting material inadequately soluble or dispersible in most of the common solvents, which is crucial to their processing. Therefore, various ingenious techniques have been reported to disperse the CNTs in various solvents with different experimental conditions. However, by analyzing the published scientific research articles, it is evident that there is an important issue or misunderstanding between the term "dispersion" and "solubilization". As a result many researchers use the terms interchangeably, particularly when stating the interaction of CNTs with liquids, which causes confusion among the readers, students, and researchers. In this article, this fundamental issue is addressed in order to give basic insight to the researchers who are working with CNTs, as well as to the scientists who deal with nano-related research domains.
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Affiliation(s)
- Thathan Premkumar
- Laboratory of Applied Macromolecular Chemistry, School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Buk-gu, Gwangju, South Korea
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Ureña-Benavides EE, Ao G, Davis VA, Kitchens CL. Rheology and Phase Behavior of Lyotropic Cellulose Nanocrystal Suspensions. Macromolecules 2011. [DOI: 10.1021/ma201649f] [Citation(s) in RCA: 250] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Esteban E. Ureña-Benavides
- Department of Chemical and Biomolecular Engineering, Clemson University, Clemson, South Carolina 29634, United States
| | - Geyou Ao
- Department of Chemical Engineering, Auburn University, Auburn, Alabama 36849, United States
| | - Virginia A. Davis
- Department of Chemical Engineering, Auburn University, Auburn, Alabama 36849, United States
| | - Christopher L. Kitchens
- Department of Chemical and Biomolecular Engineering, Clemson University, Clemson, South Carolina 29634, United States
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