Characterization of hydrophilic coated gold nanoparticles via capillary electrophoresis and Taylor dispersion analysis. Part II: Determination of the hydrodynamic radius distribution – Comparison with asymmetric flow field-flow fractionation.
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| Title: | Characterization of hydrophilic coated gold nanoparticles via capillary electrophoresis and Taylor dispersion analysis. Part II: Determination of the hydrodynamic radius distribution – Comparison with asymmetric flow field-flow fractionation. |
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| Authors: | Pyell, Ute1 pyellu@staff.uni-marburg.de, Jalil, Alaa H.1, Urban, Dominic A.1, Pfeiffer, Christian2, Pelaz, Beatriz2, Parak, Wolfgang J.2 |
| Source: | Journal of Colloid & Interface Science. Nov2015, Vol. 457, p131-140. 10p. |
| Subjects: | Gold nanoparticles, Capillary electrophoresis, Dispersion (Chemistry), Hydrodynamics, Surface active agents |
| Abstract: | In the first paper of this series we have shown for hydrophilic coated Au nanoparticles that capillary electrophoresis in combination with Taylor dispersion analysis in fused silica capillaries with an inner diameter of 75 μm allows for the unbiased precise determination of the number-weighted mean hydrodynamic diameter, the zeta potential and the effective charge number, although mobility corrected double layer polarization has to be taken into account. In this second paper we investigate whether the modified approximate analytic expression developed by Ohshima (2001) permits the calculation of calibration lines and the concomitant conversion of electropherograms into number-weighted particle radius distributions. We show that with the method developed size distributions are obtained which are independent of the measurement conditions. These size distributions are much narrower than those obtained via dynamic light scattering and data evaluation by the CONTIN algorithm. Capillary electrophoresis together with the proposed data evaluation method reveals that the analyzed nanoparticle populations have very narrow size distributions with a width of 2–4 nm. The hydrodynamic radius distributions of the coated NPs are only slightly broader than the solid particle radius distribution of the Au-NP cores. The presence of monomodal/bimodal size distributions is confirmed by asymmetric flow field-flow fractionation. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Colloid & Interface Science is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 108678055 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Characterization of hydrophilic coated gold nanoparticles via capillary electrophoresis and Taylor dispersion analysis. Part II: Determination of the hydrodynamic radius distribution – Comparison with asymmetric flow field-flow fractionation. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Pyell%2C+Ute%22">Pyell, Ute</searchLink><relatesTo>1</relatesTo><i> pyellu@staff.uni-marburg.de</i><br /><searchLink fieldCode="AR" term="%22Jalil%2C+Alaa+H%2E%22">Jalil, Alaa H.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Urban%2C+Dominic+A%2E%22">Urban, Dominic A.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Pfeiffer%2C+Christian%22">Pfeiffer, Christian</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Pelaz%2C+Beatriz%22">Pelaz, Beatriz</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Parak%2C+Wolfgang+J%2E%22">Parak, Wolfgang J.</searchLink><relatesTo>2</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Colloid+%26+Interface+Science%22">Journal of Colloid & Interface Science</searchLink>. Nov2015, Vol. 457, p131-140. 10p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Gold+nanoparticles%22">Gold nanoparticles</searchLink><br /><searchLink fieldCode="DE" term="%22Capillary+electrophoresis%22">Capillary electrophoresis</searchLink><br /><searchLink fieldCode="DE" term="%22Dispersion+%28Chemistry%29%22">Dispersion (Chemistry)</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrodynamics%22">Hydrodynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+active+agents%22">Surface active agents</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: In the first paper of this series we have shown for hydrophilic coated Au nanoparticles that capillary electrophoresis in combination with Taylor dispersion analysis in fused silica capillaries with an inner diameter of 75 μm allows for the unbiased precise determination of the number-weighted mean hydrodynamic diameter, the zeta potential and the effective charge number, although mobility corrected double layer polarization has to be taken into account. In this second paper we investigate whether the modified approximate analytic expression developed by Ohshima (2001) permits the calculation of calibration lines and the concomitant conversion of electropherograms into number-weighted particle radius distributions. We show that with the method developed size distributions are obtained which are independent of the measurement conditions. These size distributions are much narrower than those obtained via dynamic light scattering and data evaluation by the CONTIN algorithm. Capillary electrophoresis together with the proposed data evaluation method reveals that the analyzed nanoparticle populations have very narrow size distributions with a width of 2–4 nm. The hydrodynamic radius distributions of the coated NPs are only slightly broader than the solid particle radius distribution of the Au-NP cores. The presence of monomodal/bimodal size distributions is confirmed by asymmetric flow field-flow fractionation. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Colloid & Interface Science is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.jcis.2015.06.042 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 10 StartPage: 131 Subjects: – SubjectFull: Gold nanoparticles Type: general – SubjectFull: Capillary electrophoresis Type: general – SubjectFull: Dispersion (Chemistry) Type: general – SubjectFull: Hydrodynamics Type: general – SubjectFull: Surface active agents Type: general Titles: – TitleFull: Characterization of hydrophilic coated gold nanoparticles via capillary electrophoresis and Taylor dispersion analysis. Part II: Determination of the hydrodynamic radius distribution – Comparison with asymmetric flow field-flow fractionation. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Pyell, Ute – PersonEntity: Name: NameFull: Jalil, Alaa H. – PersonEntity: Name: NameFull: Urban, Dominic A. – PersonEntity: Name: NameFull: Pfeiffer, Christian – PersonEntity: Name: NameFull: Pelaz, Beatriz – PersonEntity: Name: NameFull: Parak, Wolfgang J. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 11 Text: Nov2015 Type: published Y: 2015 Identifiers: – Type: issn-print Value: 00219797 Numbering: – Type: volume Value: 457 Titles: – TitleFull: Journal of Colloid & Interface Science Type: main |
| ResultId | 1 |
