caa a22 4500 475763637 CHVBK 20180406123558.0 cr unu---uuuuu 170329e20000601xx s 000 0 eng 10.1007/s003960050546 doi (NATIONALLICENCE)springer-10.1007/s003960050546 Iron oxyhydroxide colloids stabilized with polysaccharides [Elektronische Daten] [F. Jones, H. Cölfen, M. Antonietti]  Neutralization of iron salts in aqueous solutions of κ-carrageenan and cellulose sulfate results in iron oxyhydroxide-polysaccharide hybrid colloids with unusual pH stability up to pH 13. It is shown that both polysaccharides form a tight polymer layer surrounding the inorganic particles, which in the case of κ-carrageenan is cross-linked by helical domains forming a self-assembled nanoreactor. The stabilized iron oxyhydroxide particles can undergo further reactions, for example, it is possible by a chemical reaction to produce stabilized magnetite particles. Repetition of the loading/neutralization steps in the reaction results in hybrids with iron contents much higher than the stoichiometric balance of iron and functional groups of the polymer (greater than 100% Fe/SO4 −). This combination of high iron content with a natural polysaccharide stabilizer makes these colloids interesting for a number of applications, for example, for nutritional purposes or as contrasting agents for tomography. Springer-Verlag Berlin Heidelberg, 2000 Key words Self-assembled nanoreactor nationallicence Nanoparticles nationallicence Polysaccharides nationallicence Colloid stabilization nationallicence Iron oxide nationallicence Jones F. Max Planck Institute of Colloids & Interfaces, Colloid Chemistry 14424 Potsdam, Germany e-mail: helmut.coelfen@mpikg-golm.mpg.de Tel.: +49-331-5679513 Fax: +49-331-5679502, DE aut Cölfen H. Max Planck Institute of Colloids & Interfaces, Colloid Chemistry 14424 Potsdam, Germany e-mail: helmut.coelfen@mpikg-golm.mpg.de Tel.: +49-331-5679513 Fax: +49-331-5679502, DE aut Antonietti M. Max Planck Institute of Colloids & Interfaces, Colloid Chemistry 14424 Potsdam, Germany e-mail: helmut.coelfen@mpikg-golm.mpg.de Tel.: +49-331-5679513 Fax: +49-331-5679502, DE aut https://doi.org/10.1007/s003960050546 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s003960050546 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Jones F. Max Planck Institute of Colloids & Interfaces, Colloid Chemistry 14424 Potsdam, Germany e-mail: helmut.coelfen@mpikg-golm.mpg.de Tel.: +49-331-5679513 Fax: +49-331-5679502, DE aut NATIONALLICENCE 700 1- Cölfen H. Max Planck Institute of Colloids & Interfaces, Colloid Chemistry 14424 Potsdam, Germany e-mail: helmut.coelfen@mpikg-golm.mpg.de Tel.: +49-331-5679513 Fax: +49-331-5679502, DE aut NATIONALLICENCE 700 1- Antonietti M. Max Planck Institute of Colloids & Interfaces, Colloid Chemistry 14424 Potsdam, Germany e-mail: helmut.coelfen@mpikg-golm.mpg.de Tel.: +49-331-5679513 Fax: +49-331-5679502, DE aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer