Abstract
We present anomalous small-angle X-ray scattering (ASAXS) as a new tool for the study of rod-like polyelectrolyte. The polyelectrolyte consists of a stiff poly(p-phenylene) backbone with attached positive charged groups that are balanced by Bromine counterions. ASAXS uses the dependence of the scattering length of a given element if the energy of the incident X-ray beam is near the absorption edge of this element. The analysis of the ASAXS-data leads to three partial intensities. In particular, the scattering intensity that is solely due to the cloud of the counterions can be determined and compared to the prediction of the Poisson-Boltzmann cell model. Quantitative agreement is found. ASAXS is thus shown to be a new and highly effective tool for the analysis of polyelectrolytes.
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Ballauff, M. (2005). Anomalous Small-Angle X-Ray Scattering in Rod-Like Polyelectrolytes. In: Henderson, D., Holovko, M., Trokhymchuk, A. (eds) Ionic Soft Matter: Modern Trends in Theory and Applications. NATO Science Series II: Mathematics, Physics and Chemistry, vol 206. Springer, Dordrecht. https://doi.org/10.1007/1-4020-3659-0_9
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DOI: https://doi.org/10.1007/1-4020-3659-0_9
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