1
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Somnin C, Chamieh J, Saetear P, Cottet H. Taylor dispersion analysis using capacitively coupled contactless conductivity detector. Talanta 2024; 272:125815. [PMID: 38402737 DOI: 10.1016/j.talanta.2024.125815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 02/17/2024] [Accepted: 02/18/2024] [Indexed: 02/27/2024]
Abstract
Taylor dispersion analysis (TDA) is a simple and absolute method to determine the hydrodynamic radius of solutes that respond to UV or fluorescence detections. To broaden the application range of TDA, it is necessary to develop new detection modes. This study aims to study capacitively coupled contactless conductivity detector (C4D) for the analysis of charged macromolecules. The detection sensitivities and hydrodynamic radii were compared for a C4D detector and a UV detector on positively or negatively charged polymers responding both to UV and C4D (poly-L-lysine and poly(acrylamide-co-2-acrylamido-1-methyl-propanesulfonate). The influence of the composition of the background electrolyte on the detection sensitivity has been studied and optimized for C4D detection. The influence of the molar mass and of the polymer chemical charge density on the C4D and UV sensitivities of detection have been investigated based on well-characterized copolymers samples of different molar masses and charge densities. The advantages and disadvantages compared to UV detection, as well as the range of applicability of C4D detection in TDA were identified. C4D detection can be an alternative method for sizing charged polymers of reasonable molar mass (typically below 105 g mol-1) that do not absorb in UV. A decline in the sensitivity of detection in C4D was observed for higher molar masses.
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Affiliation(s)
| | - Joseph Chamieh
- IBMM, Université de Montpellier, CNRS, ENSCM, Montpellier, France
| | - Phoonthawee Saetear
- Flow Innovation-Research for Science and Technology Laboratories (Firstlabs), Ratchathewi District, Bangkok, 10110, Thailand; Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University, Rama 6 Road, Ratchathewi District, Bangkok, 10400, Thailand.
| | - Hervé Cottet
- IBMM, Université de Montpellier, CNRS, ENSCM, Montpellier, France.
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2
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Benyaya M, Bolzinger MA, Chevalier Y, Bordes C. Formulation of polymeric particles with controlled charges by alkaline tempering. POLYMER 2023. [DOI: 10.1016/j.polymer.2023.125838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
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3
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Jing M, Gao W, Hutchins P. Development of Two-Dimensional Offline Coupling of Asymmetrical Flow Field-Flow Fractionation and Capillary Electrophoresis for the Separation of a Five-Component Submicrometer Particle Mixture. Anal Chem 2023; 95:3840-3847. [PMID: 36762381 DOI: 10.1021/acs.analchem.2c05352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
Submicrometer colloidal particles are widely applied in a variety of industrial products. While precise size and surface charge control is crucial to the stability and functionality of these materials, a tool to determine these properties with sufficient resolution, detection sensitivity, and robustness is still not available. The recently reported offline coupling of asymmetrical flow field-flow fractionation and capillary electrophoresis (AF4 × CE) shows success in improving the separation resolution for nanoparticles; however, challenges remain for sensitive multiple-component submicrometer particle analysis because of wide size and mobility distributions. We here report offline coupling of an AF4 method and a CE method, which utilized the online reversed electrode polarity stacking mode, to successfully characterize a five-component, submicrometer particle mixture. The mixture was successfully separated and detected with an improved inter- and intracomponent resolution. Therefore, our developed platform holds great potential for industrial applications involving multiple-component particle mixtures.
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Affiliation(s)
- Meng Jing
- Analytical Science, Core R&D, Dow, Collegeville, Pennsylvania 19426, United States
| | - Wei Gao
- Analytical Science, Core R&D, Dow, Collegeville, Pennsylvania 19426, United States
| | - Paul Hutchins
- Analytical Science, Core R&D, Dow, Midland, Michigan 48640, United States
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4
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Malburet C, Leclercq L, Cotte JF, Thiebaud J, Bazin E, Garinot M, Cottet H. Size and Charge Characterization of Lipid Nanoparticles for mRNA Vaccines. Anal Chem 2022; 94:4677-4685. [PMID: 35254048 DOI: 10.1021/acs.analchem.1c04778] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Messenger RNA vaccines have come into the spotlight as a promising and adaptive alternative to conventional vaccine approaches. The efficacy of mRNA vaccines relies on the ability of mRNA to reach the cytoplasm of cells, where it can be translated into proteins of interest, allowing it to trigger the immune response. However, unprotected mRNA is unstable and susceptible to degradation by exo- and endonucleases, and its negative charges are electrostatically repulsed by the anionic cell membranes. Therefore, mRNA needs a delivery system that protects the nucleic acid from degradation and allows it to enter into the cells. Lipid nanoparticles (LNPs) represent a nonviral leading vector for mRNA delivery. Physicochemical parameters of LNPs, including their size and their charge, directly impact their in vivo behavior and, therefore, their cellular internalization. In this work, Taylor dispersion analysis (TDA) was used as a new methodology for the characterization of the size and polydispersity of LNPs, and capillary electrophoresis (CE) was used for the determination of LNP global charge. The results obtained were compared with those obtained by dynamic light scattering (DLS) and laser Doppler electrophoresis (LDE).
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Affiliation(s)
- Camille Malburet
- IBMM, University of Montpellier, CNRS, ENSCM, Montpellier France
- Sanofi Pasteur, 1541 avenue Marcel Mérieux, 69280 Marcy l'Etoile, France
| | - Laurent Leclercq
- IBMM, University of Montpellier, CNRS, ENSCM, Montpellier France
| | | | - Jérôme Thiebaud
- Sanofi Pasteur, 1541 avenue Marcel Mérieux, 69280 Marcy l'Etoile, France
| | - Emilie Bazin
- Sanofi Pasteur, 1541 avenue Marcel Mérieux, 69280 Marcy l'Etoile, France
| | - Marie Garinot
- Sanofi Pasteur, 1541 avenue Marcel Mérieux, 69280 Marcy l'Etoile, France
| | - Hervé Cottet
- IBMM, University of Montpellier, CNRS, ENSCM, Montpellier France
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5
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Evaluation of zeta potential of nanomaterials by electrophoretic light scattering: Fast field reversal versus Slow field reversal modes. Talanta 2019; 205:120062. [DOI: 10.1016/j.talanta.2019.06.062] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 06/14/2019] [Accepted: 06/16/2019] [Indexed: 11/21/2022]
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6
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Oszwałdowski S. Capillary electrophoresis study on segment/segment system and its role in characterization of nanoparticles. J Chromatogr A 2019; 1601:365-374. [DOI: 10.1016/j.chroma.2019.05.049] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 05/20/2019] [Accepted: 05/26/2019] [Indexed: 12/22/2022]
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7
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Ibrahim A, Cottet H. Characterization of hydrosoluble fraction and oligomers in poly(vinylidene chloride) latexes by capillary electrophoresis using electrophoretic mobility modeling. J Chromatogr A 2019; 1598:223-231. [PMID: 31053352 DOI: 10.1016/j.chroma.2019.04.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Revised: 04/06/2019] [Accepted: 04/08/2019] [Indexed: 11/28/2022]
Abstract
The characterization of hydrosoluble oligomers in latexes is an important topic in emulsion polymerization since oligomers are suspected to be responsible for latex destabilization. In this work, the hydrosoluble fraction of poly(vinylidene chloride) latexes synthesized by emulsion polymerization of three monomers (acrylic acid, methyl acrylate, vinylidene chloride) was characterized by capillary electrophoresis (CE). CE using direct UV detection permitted to estimate residual monomers and surfactants concentrations contained in the latexes serums. Water soluble oligomers, polymerization initiator (persulfate) and other inorganic anions were detected by indirect UV detection. The oligomers content in the dry extract of serum was estimated to be about 6% (% m/m) represented mainly by 9 different compounds belonging to 3 different families. Using a semi-empirical electrophoretic mobility modeling, the charge number of these oligomers was estimated to be -2 and the molar masses were estimated in the range of ∼300-550 g.mol-1. Oligomer samples obtained by surfactant-free polymerization, with different initial monomers proportions, provided qualitatively 14 different oligomers, including the 9 oligomers previously detected in the serums. Finally, the latex was characterized (electrophoretic mobility and zeta potential) using its serum as a background electrolyte. This approach could be very useful to study the behavior of the latexes, and possibly destabilization effect, in analytical conditions very close to its real environment / applications.
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Affiliation(s)
- Amal Ibrahim
- IBMM, University of Montpellier, CNRS, ENSCM, Montpellier, France
| | - Hervé Cottet
- IBMM, University of Montpellier, CNRS, ENSCM, Montpellier, France.
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8
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Cottet H, Wu H, Allison SA. On the ionic strength dependence of the electrophoretic mobility: From 2D to 3D slope-plots. Electrophoresis 2016; 38:624-632. [PMID: 27859393 DOI: 10.1002/elps.201600329] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2016] [Revised: 11/02/2016] [Accepted: 11/02/2016] [Indexed: 11/12/2022]
Abstract
Determining the charge and the nature (small ion, nanoparticle, or polyelectrolyte) of an unknown solute from its electrophoretic characteristics remains a challenging issue. In this work, we demonstrate that, if the knowledge of the effective electrophoretic mobility (μep ) at a given ionic strength is not sufficient to characterize a given solute, the combination of this parameter with (i) the relative decrease of the electrophoretic mobility with the ionic strength (S), and (ii) the hydrodynamic radius (Rh ), is sufficient (in most cases) to deduce the nature of the solute and its charge. These three parameters are experimentally accessible by CZE and Taylor dispersion analysis performed on the same instrumentation. 3D representation of the three aforementioned parameters (μep ; S and Rh ) is proposed to visualize the differences in the electrophoretic behavior between solutes according to their charge and nature. Surprisingly, such 3D slope plot in the case of small ions and nanoparticles looks like a "whale-tail," while polyelectrolyte contour plot represents a rather simple and monotonous map that is independent of solute size. This work also sets how to estimate the effective charge of a solute from a given experimental (S,Rh,μ ep 5 mM ) triplet, which is not possible to obtain unambiguously with only (Rh,μ ep 5 mM ) or (S,μ ep 5 mM ) doublet, where μ ep 5 mM is the effective electrophoretic mobility at 5 mM ionic strength.
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Affiliation(s)
- Hervé Cottet
- Institut des Biomolécules Max Mousseron, (UMR 5247 CNRS, Université de Montpellier, Ecole Nationale Supérieure de Chimie de Montpellier), Montpellier, France
| | - Hengfu Wu
- Department of Chemistry, Georgia State University, Atlanta, Georgia, USA
| | - Stuart A Allison
- Department of Chemistry, Georgia State University, Atlanta, Georgia, USA
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9
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Influence of the ionic strength of acidic background electrolytes on the separation of proteins by capillary electrophoresis. J Chromatogr A 2016; 1432:145-51. [DOI: 10.1016/j.chroma.2015.12.060] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Revised: 12/20/2015] [Accepted: 12/21/2015] [Indexed: 12/16/2022]
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10
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Oukacine F, Morel A, Desvignes I, Cottet H. Size-based characterization of nanoparticle mixtures by the inline coupling of capillary electrophoresis to Taylor dispersion analysis. J Chromatogr A 2015; 1426:220-5. [PMID: 26653841 DOI: 10.1016/j.chroma.2015.11.024] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Revised: 11/04/2015] [Accepted: 11/05/2015] [Indexed: 10/22/2022]
Abstract
Separation of closely related nanoparticles is still a challenging issue for the characterization of complex mixtures for industrial/research applications or regulatory purposes. In this work, the remarkable separating performances of CE were complemented with the absolute size-based determination provided by Taylor dispersion analysis (TDA) for the characterization of nanoparticle mixtures. The inline hyphenation of CE to TDA was successfully implemented for the baseline separation followed by a size-based characterization of a bimodal mixture containing two closely size-related nanolatexes (70nm and 56nm radii). A pixel sensor UV area imager providing three detection points along the capillary was used for a differential measurement of the peak broadening during the Taylor dispersion step. Comparison of this new technique with dynamic light scattering and hydrodynamic chromatography is also discussed.
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Affiliation(s)
- Farid Oukacine
- Université Grenoble Alpes, DPM UMR 5063, CNRS, F-38041 Grenoble, France
| | | | - Isabelle Desvignes
- Institut des Biomolécules Max Mousseron (IBMM, UMR 5247 CNRS, Université de Montpellier, Ecole Nationale Supérieure de Chimie de Montpellier), Place Eugène Bataillon, CC 1706, 34095 Montpellier Cedex 5, France
| | - Hervé Cottet
- Institut des Biomolécules Max Mousseron (IBMM, UMR 5247 CNRS, Université de Montpellier, Ecole Nationale Supérieure de Chimie de Montpellier), Place Eugène Bataillon, CC 1706, 34095 Montpellier Cedex 5, France.
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11
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Oszwałdowski S, Kubáň P. Capillary electrophoresis study on segment/segment system for segments based on phase of mixed micelles and its role in transport of particles between the two segments. J Chromatogr A 2015; 1412:139-50. [DOI: 10.1016/j.chroma.2015.08.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Revised: 08/04/2015] [Accepted: 08/06/2015] [Indexed: 12/31/2022]
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12
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Pyell U, Jalil AH, Pfeiffer C, Pelaz B, Parak WJ. Characterization of gold nanoparticles with different hydrophilic coatings via capillary electrophoresis and Taylor dispersion analysis. Part I: Determination of the zeta potential employing a modified analytic approximation. J Colloid Interface Sci 2015; 450:288-300. [DOI: 10.1016/j.jcis.2015.03.006] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Revised: 02/20/2015] [Accepted: 03/06/2015] [Indexed: 01/06/2023]
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13
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Oszwałdowski S, Kubáň P. Capillary electrophoresis study on phase of mixed micelles and its role in transport phenomena of particles. Anal Chim Acta 2015; 864:85-93. [DOI: 10.1016/j.aca.2015.01.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Revised: 01/09/2015] [Accepted: 01/12/2015] [Indexed: 12/27/2022]
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14
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Chamieh J, Koval D, Besson A, Kašička V, Cottet H. Generalized polymer effective charge measurement by capillary isotachophoresis. J Chromatogr A 2014; 1370:255-62. [DOI: 10.1016/j.chroma.2014.10.025] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2014] [Revised: 10/03/2014] [Accepted: 10/09/2014] [Indexed: 12/22/2022]
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15
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Tseng S, Yeh PH, Hsu JP. Simulation of polyelectrolyte electrophoresis: effects of the aspect ratio, double-layer polarization, effective charge, and electroosmotic flow. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:8177-8185. [PMID: 24963950 DOI: 10.1021/la501535b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The electrophoresis of a deformable polyelectrolyte (PE) is studied theoretically by considering a Poisson-Nernst-Planck model coupled with modified Navier-Stokes equations, taking account of the effects of double-layer polarization, counterion condensation, and electroosmotic flow. The influences of the local electric field and the effective PE charge on the PE mobility are discussed, thereby providing a complete picture for the phenomenon under consideration. Our model explains successfully the presence of a local minimum in the mobility of a highly charged PE as the bulk salt concentration varies, as observed experimentally. Numerical simulation also reveals several interesting and important results. For example, the more a PE is stretched in the direction of electrophoresis, the larger is its mobility. As the double layer becomes thin, the local electric field becomes independent of the PE shape, and its behavior mainly depends upon its effective charge. We show that the force that stretches a PE is maximal when it is spherical and decreases with an increasing aspect ratio, which has not been reported previously.
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Affiliation(s)
- Shiojenn Tseng
- Department of Mathematics, Tamkang University , Tamsui, Taipei 25137, Taiwan
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16
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Macková H, Oukacine F, Plichta Z, Hrubý M, Kučka J, Taverna M, Horák D. Poly(glycidyl methacrylate)/silver nanocomposite microspheres as a radioiodine scavenger: Electrophoretic characterisation of carboxyl- and amine-modified particles. J Colloid Interface Sci 2014; 421:146-53. [DOI: 10.1016/j.jcis.2014.01.042] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Revised: 01/22/2014] [Accepted: 01/25/2014] [Indexed: 11/17/2022]
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17
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Sang F, Huang X, Ren J. Characterization and separation of semiconductor quantum dots and their conjugates by capillary electrophoresis. Electrophoresis 2014; 35:793-803. [DOI: 10.1002/elps.201300528] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Revised: 12/03/2013] [Accepted: 12/03/2013] [Indexed: 11/10/2022]
Affiliation(s)
- Fuming Sang
- School of Marine Science and Technology; Harbin Institute of Technology; Weihai P. R. China
| | - Xiangyi Huang
- College of Chemistry & Chemical Engineering; State Key Laboratory of Metal Matrix Composites; Shanghai Jiaotong University; Shanghai P. R. China
| | - Jicun Ren
- College of Chemistry & Chemical Engineering; State Key Laboratory of Metal Matrix Composites; Shanghai Jiaotong University; Shanghai P. R. China
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18
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Baharifar H, Fakhari AR, Ziyadi H, Oghabian MA, Amani A, Faridi-Majidi R. Influence of polymeric coating on capillary electrophoresis of iron oxide nanoparticles. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2013. [DOI: 10.1007/s13738-013-0298-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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19
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Size and charge characterization of polymeric drug delivery systems by Taylor dispersion analysis and capillary electrophoresis. Anal Bioanal Chem 2013; 405:5369-79. [PMID: 23624952 DOI: 10.1007/s00216-013-6972-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Revised: 04/03/2013] [Accepted: 04/04/2013] [Indexed: 12/21/2022]
Abstract
In this work, Taylor dispersion analysis and capillary electrophoresis were used to characterize the size and charge of polymeric drug delivery nanogels based on polyglutamate chains grafted with hydrophobic groups of vitamin E. The hydrophobic vitamin E groups self-associate in water to form small hydrophobic nanodomains that can incorporate small drugs or therapeutic proteins. Taylor dispersion analysis is well suited to determine the weight average hydrodynamic radius of nanomaterials and to get information on the size polydispersity of polymeric samples. The effective charge was determined either from electrophoretic mobility and hydrodynamic radius using electrophoretic modeling (three different approaches were compared), or by indirect UV detection in capillary electrophoresis. The influence of vitamin E hydrophobicity on the polymer effective charge has been studied. The presence of vitamin E leads to a drastic decrease in polymer effective charge in comparison to non-modified polyglutamate. Finally, the electrophoretic behavior of polyglutamate backbone grafted with hydrophobic vitamin E (pGVE) nanogels according to the ionic strength was investigated using the recently proposed slope plot approach. It was deduced that the pGVE nanogels behave electrophoretically as polyelectrolytes which is in good agreement with the high water content of the nanogels.
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20
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Yeh LH, Tai YH, Wang N, Hsu JP, Qian S. Electrokinetics of pH-regulated zwitterionic polyelectrolyte nanoparticles. NANOSCALE 2012; 4:7575-7584. [PMID: 23108425 DOI: 10.1039/c2nr32277c] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The electrokinetic behavior of pH-regulated, zwitterionic polyelectrolyte (PE) nanoparticles (NPs) in a general electrolyte solution containing multiple ionic species is investigated for the first time. The NPs considered are capable of simulating entities such as proteins, biomolecules, and synthetic polymers. The applicability of the model proposed is verified by the experimental data of succinoglycan nanoparticles available in the literature. We show that, in addition to their effective charge density, counterion condensation, double-layer polarization, and electro-osmotic flow of unbalanced counterions inside the double layer all significantly affect the electrophoretic behaviors of NPs. Our model successfully predicts many interesting electrophoretic behaviors, which qualitatively agree with experimental observations available in the literature. In contrast, because the effects of double-layer polarization and charge regulation are neglected, the existing theoretical models fail to explain the experimental results. The results gathered provide necessary information for the interpretation of relevant electrophoresis data in practice, and for nanofluidic applications such as biomimetic ion channels and nanopore-based sensing of single biomolecules.
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Affiliation(s)
- Li-Hsien Yeh
- Department of Chemical and Materials Engineering, National Yunlin University of Science and Technology, Douliou, Yunlin 64002, Taiwan
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21
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Capillary electrophoresis with photodiode array detection of processable poly(3,4-ethylenedioxythiophene)/polystyrene sulfonate aqueous dispersions. J Chromatogr A 2012; 1267:246-51. [DOI: 10.1016/j.chroma.2012.09.100] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2012] [Revised: 09/27/2012] [Accepted: 09/28/2012] [Indexed: 11/21/2022]
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22
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Ibrahim A, Allison SA, Cottet H. Extracting Information from the Ionic Strength Dependence of Electrophoretic Mobility by Use of the Slope Plot. Anal Chem 2012; 84:9422-30. [DOI: 10.1021/ac302033z] [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)
- Amal Ibrahim
- Institut des Biomolécules
Max Mousseron, UMR 5247 CNRS, Université de Montpellier 1 and 2, place Eugène Bataillon CC 1706, 34095
Montpellier Cedex 5, France
| | - Stuart A. Allison
- Department of Chemistry, Georgia State University, Atlanta, Georgia 30302-4098,
United States
| | - Hervé Cottet
- Institut des Biomolécules
Max Mousseron, UMR 5247 CNRS, Université de Montpellier 1 and 2, place Eugène Bataillon CC 1706, 34095
Montpellier Cedex 5, France
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23
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Hsu JP, Lo HM, Yeh LH, Tseng S. Importance of Boundary on the Electrophoresis of a Soft Cylindrical Particle. J Phys Chem B 2012; 116:12626-32. [DOI: 10.1021/jp305473s] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | - Li-Hsien Yeh
- Department of
Chemical and Materials
Engineering, National Yunlin University of Science and Technology, Douliou, Yunlin, Taiwan 64002
| | - Shiojenn Tseng
- Department of Mathematics, Tamkang University, Tamsui, Taipei, 25137, Taiwan
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24
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Ibrahim A, Ohshima H, Allison SA, Cottet H. Determination of effective charge of small ions, polyelectrolytes and nanoparticles by capillary electrophoresis. J Chromatogr A 2012; 1247:154-64. [PMID: 22683187 DOI: 10.1016/j.chroma.2012.05.010] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2012] [Revised: 04/27/2012] [Accepted: 05/01/2012] [Indexed: 11/28/2022]
Abstract
In this paper, a systematic and comparative study related to the effective charge determination of three kinds of solutes (small ions, polyelectrolytes and nanoparticles) was performed. Four approaches were compared regarding their conditions of validity and their advantages/disadvantages. Three of them allow the effective charge determination from the electrophoretic mobility and the hydrodynamic radius of the solutes using electrophoretic mobility modelings based on Nernst-Einstein (NE), O'Brien-White-Ohshima (OWO) and Yoon and Kim (YK) equations. Electrophoretic mobility and hydrodynamic radius were determined by capillary electrophoresis and Taylor dispersion analysis, respectively, using the same instrumentation in similar conditions, on a large set of samples. A fourth experimental approach based on the sensitivity of detection in indirect UV detection mode (IUV) was compared to the previously mentioned methods. OWO and YK modelings are well adapted for the effective charge determination of small ions and nanoparticles, while IUV is the only method adapted for polyelectrolytes.
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Affiliation(s)
- Amal Ibrahim
- Institut des Biomolécules Max Mousseron, UMR 5247 CNRS, Université de Montpellier 1-2, Place Eugène Bataillon CC 1706, 34095 Montpellier Cedex 5, France
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25
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Affiliation(s)
- Matthew Geiger
- University of Minnesota, Department of Chemistry, 207
Pleasant Street South East, Minneapolis, Minnesota 55455, United States
| | - Amy L. Hogerton
- University of Minnesota, Department of Chemistry, 207
Pleasant Street South East, Minneapolis, Minnesota 55455, United States
| | - Michael T. Bowser
- University of Minnesota, Department of Chemistry, 207
Pleasant Street South East, Minneapolis, Minnesota 55455, United States
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26
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Zhao J, Chen G, Zhang W, Li P, Wang L, Yue Q, Wang H, Dong R, Yan X, Liu J. High-Resolution Separation of Graphene Oxide by Capillary Electrophoresis. Anal Chem 2011; 83:9100-6. [DOI: 10.1021/ac202136n] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Jingjing Zhao
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Department of Chemistry and ‡Department of Physics, Liaocheng University, Liaocheng, 252059 Shandong, China
| | - Guifen Chen
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Department of Chemistry and ‡Department of Physics, Liaocheng University, Liaocheng, 252059 Shandong, China
| | - Wei Zhang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Department of Chemistry and ‡Department of Physics, Liaocheng University, Liaocheng, 252059 Shandong, China
| | - Peng Li
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Department of Chemistry and ‡Department of Physics, Liaocheng University, Liaocheng, 252059 Shandong, China
| | - Lei Wang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Department of Chemistry and ‡Department of Physics, Liaocheng University, Liaocheng, 252059 Shandong, China
| | - Qiaoli Yue
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Department of Chemistry and ‡Department of Physics, Liaocheng University, Liaocheng, 252059 Shandong, China
| | - Huaisheng Wang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Department of Chemistry and ‡Department of Physics, Liaocheng University, Liaocheng, 252059 Shandong, China
| | - Ruixin Dong
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Department of Chemistry and ‡Department of Physics, Liaocheng University, Liaocheng, 252059 Shandong, China
| | - Xunling Yan
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Department of Chemistry and ‡Department of Physics, Liaocheng University, Liaocheng, 252059 Shandong, China
| | - Jifeng Liu
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Department of Chemistry and ‡Department of Physics, Liaocheng University, Liaocheng, 252059 Shandong, China
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