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Correlation length of hydrophobic polyelectrolyte solutions

Title data

Baigl, Damien ; Ober, R. ; Qu, Dan ; Fery, Andreas ; Williams, Claudine E.:
Correlation length of hydrophobic polyelectrolyte solutions.
In: Europhysics Letters. Vol. 62 (January 2003) Issue 4 . - pp. 588-594.
ISSN 0295-5075
DOI: https://doi.org/10.1209/epl/i2003-00391-2

Official URL: Volltext

Abstract in another language

The combination of two techniques (Small Angle X-ray Scattering and Atomic Force Microscopy) has allowed us to measure in reciprocal and real space the correlation length ξ of salt-free aqueous solutions of a highly charged hydrophobic polyelectrolyte as a function of the polymer concentration Cp, charge fraction f and chain length N. Contrary to the classical behaviour of hydrophilic polyelectrolytes in the strong-coupling limit, ξ is strongly dependent on −1/2 −1/3 f. In particular, a continuous transition has been observed from ξ ∼ Cp to ξ ∼ Cp when f decreased from 100 to 35. We interpret this unusual behaviour as the consequence of the two features characterising the hydrophobic polyelectrolytes: the pearl necklace conformation ofthechainsandtheanomalouslystrongreductionoftheeffectivechargefraction.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors > Chair Physical Chemistry II - Univ.-Prof. Dr. Andreas Fery
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Physical Chemistry II
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors
Result of work at the UBT: No
DDC Subjects: 500 Science > 500 Natural sciences
500 Science > 530 Physics
500 Science > 540 Chemistry
Date Deposited: 08 Dec 2014 14:41
Last Modified: 12 Dec 2016 08:20
URI: https://eref.uni-bayreuth.de/id/eprint/4020