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Härtl W, Versmold H, Wittig U. Flüssigkeitsähnliche Struktur in Suspensionen von Sulfonlatexkugeln. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/bbpc.198400008] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Härtl W, Versmold H, Zhang-Heider X. Tracer Particle Diffusion in Crystal- and Fluid-like Ordered Colloidal Suspensions. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19910950930] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Ishii Y, Matsuoka H, Ise N. “Ordered” Distribution of Ionic Micelles in Dilute Solutions of Alkyltrimethylammonium Chloride as Studied by Small-Angle X-ray Scattering. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19860900108] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Tata B, Kesavamoorthy R, Arora AK. On RMSA description of liquid order in dilute charged colloidal suspensions. Mol Phys 2006. [DOI: 10.1080/00268978600100291] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- B.V.R. Tata
- a Materials Science Laboratory , Reactor Research Centre , Kalpakkam 603 102, Tamil Nadu , India
| | - R. Kesavamoorthy
- a Materials Science Laboratory , Reactor Research Centre , Kalpakkam 603 102, Tamil Nadu , India
| | - Akhilesh K. Arora
- a Materials Science Laboratory , Reactor Research Centre , Kalpakkam 603 102, Tamil Nadu , India
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Egelhaaf SU, Lobaskin V, Bauer HH, Merkle HP, Schurtenberger P. Structure of peptide solutions: a light scattering and numerical study. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2004; 13:153-164. [PMID: 15052425 DOI: 10.1140/epje/e2004-00051-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
We investigated the interactions between protein molecules in solution, in particular for low salt concentrations and thus strong electrostatic interactions where a treatment based on the second virial coefficient is not sufficient. Static and dynamic light scattering experiments on solutions containing the peptide human calcitonin (hCT) were combined with calculations based on the Ornstein-Zernike equation with the hypernetted chain (HNC) closure and computer simulations within the primitive electrolyte model. The simulation illustrates the distribution of proteins in solution and the formation of (transient) protein aggregates. It furthermore allows us to predict the physical stability of hCT solutions in dependence of ionic strength, pH and hCT concentration.
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Affiliation(s)
- S U Egelhaaf
- School of Physics, The University of Edinburgh, Edinburgh, EH9 3JZ, UK.
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Ise N. Dynamic aspect of ordering of charged species in solutions - polymer latex particles and linear polymers -. ACTA ACUST UNITED AC 2003. [DOI: 10.1002/macp.1985.020121985118] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Quesada-Pérez M, Callejas-Fernández J, Hidalgo-Alvarez R. Interaction potentials, structural ordering and effective charges in dispersions of charged colloidal particles. Adv Colloid Interface Sci 2002; 95:295-315. [PMID: 11843194 DOI: 10.1016/s0001-8686(01)00065-3] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
As colloidal dispersions of charged particles exhibit a wide variety of commercial, technological and scientific applications, a considerable theoretical effort has been devoted to finding an effective interaction potential from primitive models. The forces derived from this potential should justify the spatial ordering experimentally observed under certain conditions. This paper reviews the advances in these theoretical studies as well as some experiments (based on the mentioned order) that try to corroborate them. Special attention has been paid to the Derjaguin-Landau-Verwey-Overbeek (DLVO) potential. Nowadays, many of these theoretical investigations suggest that it could be applied if some of its parameters are renormalized. Nevertheless, to achieve a renormalization procedure in a strict way (from a primitive model) is a difficult task as a result of the size and charge asymmetries between small ions and macroions. Thus, several procedures for computing renormalized charges in a simple way have been developed. However, the notion of effective charge has also been widely used (as a adjustable parameter) in order to justify results found for several kinds of colloids (like solid particle dispersions or micellar systems) by means of quite different experimental techniques. Renormalization (as well as ion condensation) approaches, experiments and the controversial relationship between theoretical and phenomenological effective charges are also reviewed in this work.
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Affiliation(s)
- M Quesada-Pérez
- Departamento de Física, Universidad de Jaén, Escuela Universitaria Politécnica de Linares, Spain
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Gröhn F, Antonietti M. Intermolecular Structure of Spherical Polyelectrolyte Microgels in Salt-Free Solution. 1. Quantification of the Attraction between Equally Charged Polyelectrolytes. Macromolecules 2000. [DOI: 10.1021/ma000235v] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Franziska Gröhn
- Max Planck Institute of Colloids and Interfaces, D-14424 Potsdam/Golm, Germany
| | - Markus Antonietti
- Max Planck Institute of Colloids and Interfaces, D-14424 Potsdam/Golm, Germany
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Quesada-Pérez M, Callejas-Fernández J, Hidalgo-Álvarez R. Probing Electrostatic Forces in Colloidal Suspensions through Turbidity Data. J Colloid Interface Sci 1999; 217:177-185. [PMID: 10441427 DOI: 10.1006/jcis.1999.6359] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This paper deals with the use of turbidimetry to obtain information on forces between negatively charged polymeric particles at very low ionic strength. The specific turbidity of deionized colloidal suspensions is measured and compared with the values obtained for suspensions of noninteracting particles. From these data, the integrated structure factors are experimentally obtained for several latex samples. These functions are fitted using the repulsive part of the DLVO potential, the Ornstein-Zernike equation, and the hyper-netted chain closure, which enables us to interpret the results in terms of an effective charge. The reliability of these values is discussed. In addition, a comparison between turbidimetry and light scattering data is presented. Copyright 1999 Academic Press.
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Affiliation(s)
- M Quesada-Pérez
- Departamento de Física Aplicada, Facultad de Ciencias, Universidad de Granada, Granada, 18071, Spain
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Brands A, Versmold H, van Megen W. Tracer particle diffusion in crystal-like ordered colloidal suspensions. J Chem Phys 1999. [DOI: 10.1063/1.478181] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Quesada-Pérez M, Callejas-Fernández J, Hidalgo-Álvarez R. Effective Charge on Polymer Colloids Obtained Using a Renormalization Model. J Colloid Interface Sci 1998; 206:354-356. [PMID: 9761666 DOI: 10.1006/jcis.1998.5725] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Static light scattering has been used to study the electrostatic interaction between colloidal particles. Experiments were carried out using a latex with a very small diameter, allowing structure determination at high particle concentration. The obtained effective charge characterizing this interaction is found to be smaller than the bare charge determined from titration. A renormalization model connecting both values has been used. The agreement between the renormalized charge and that obtained from scattering data seems to point out that this model operates well. Copyright 1998 Academic Press.
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Affiliation(s)
- M Quesada-Pérez
- Departamento de Física Aplicada, Universidad de Granada, Granada, 18071-E, Spain
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Quesada-P�rez M, Callejas-Fern�ndez J, Hidalgo-�lvarez R. Effective interaction potential obtained from experimental structure factors: The inverse problem. ACTA ACUST UNITED AC 1997. [DOI: 10.1007/bf01182421] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Das B, Gupta-Bhaya P. Hypernetted chain calculation of static correlation function of macroions in solution using Allnatt equation. Mol Phys 1995. [DOI: 10.1080/00268979500102821] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Härtl W, Versmold H, Zhang‐Heider X. The glass transition of charged polymer colloids. J Chem Phys 1995. [DOI: 10.1063/1.469377] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Härtl W, Versmold H, Wittig U, Linse P. Structure and dynamics of polymer colloid suspensions from dynamic light scattering and Brownian dynamics simulation. J Chem Phys 1992. [DOI: 10.1063/1.463448] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Härtl W, Segschneider C, Versmold H, Linse P. On the structure factor of liquid-like ordered binary mixtures of colloidal suspensions. Mol Phys 1991. [DOI: 10.1080/00268979100101371] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Rika J, Binkert T. Direct measurement of a distinct correlation function by fluorescence cross correlation. PHYSICAL REVIEW. A, GENERAL PHYSICS 1989; 39:2646-2652. [PMID: 9901536 DOI: 10.1103/physreva.39.2646] [Citation(s) in RCA: 59] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Fushiki M. A hypernetted chain structure factor for charged colloidal dispersions. J Chem Phys 1988. [DOI: 10.1063/1.455275] [Citation(s) in RCA: 33] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Härtl W, Versmold H. Liquid‐like ordered colloidal suspensions: The influence of the particle concentration. J Chem Phys 1988. [DOI: 10.1063/1.454366] [Citation(s) in RCA: 58] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Tata B, Kesavamoorthy R, Sood A. Structure factor for a two component mixture of dilute colloidal suspensions. Mol Phys 1987. [DOI: 10.1080/00268978700101571] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Light Scattering Investigations of the Structure and Dynamics in Liquid-like Ordered Colloidal Suspensions*. ACTA ACUST UNITED AC 1987. [DOI: 10.1524/zpch.1987.153.part_1_2.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Ise N. Geordnete Bereiche in verdünnten Lösungen von ionischen Spezies durch Anziehung gleichsinnig geladener Teilchen - ein Paradigmenwechsel in der Kolloid- und Polymerchemie. Angew Chem Int Ed Engl 1986. [DOI: 10.1002/ange.19860980406] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Matsuoka H, Ise N, Okubo T, Kunugi S, Tomiyama H, Yoshikawa Y. ‘‘Ordered’’ structure in dilute solutions of biopolymers as studied by small‐angle x‐ray scattering. J Chem Phys 1985. [DOI: 10.1063/1.449781] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Härtl W, Versmold H. Temperature dependence of the structure factor S(Q) of liquid‐like ordered colloidal dispersions. J Chem Phys 1984. [DOI: 10.1063/1.447911] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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