Publikation:

Sulfonated Polymethylsiloxane as an Additive for Selective Calcium Oxalate Crystallization

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2015

Autor:innen

Neira-Carrillo, Andrónico
Luengo-Ponce, Fabian
Vásquez-Quitral, Patricio
Yazdani-Pedram, Mehrdad
Fernández, Maria Soledad
Arias, José Luis

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http://nbn-resolving.de/urn:nbn:de:bsz:352-2-olb1hynr5usr3
DOI (zitierfähiger Link)
https://doi.org/10.1002/ejic.201402063
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Chemie: Publikationen
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Published

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European Journal of Inorganic Chemistry. 2015(7), pp. 1167-1177. ISSN 0009-2940. eISSN 1099-0682. Available under: doi: 10.1002/ejic.201402063

Zusammenfassung

Sulfonated and fluorescent polymethylsiloxanes (SO3H-PMS) were synthesized, and their effect as additives on in vitro calcium oxalate (CaOx) crystallization was evaluated. SO3H-PMS was prepared by hydrosilylation and sulfonation reactions with poly(dimethylsiloxane-co-hydrogenmethylsiloxane) (PDMS-co-PMHS). Several analytical tools were used to investigate the morphology, crystal structure, and chemical contents of the harvested CaOx crystals. Varying the concentration of SO3H-PMS induces a transition of CaOx monohydrate (COM) with expanded multilayer and circular stacked-sheet morphologies as well as of the bipyramidal CaOx dihydrate (COD) crystals in three crystallization procedures. Energy-dispersive X-ray spectroscopy (EDS) and XRD allowed detecting the presence of Si (0.2–1.0°wt.-%), which stems from SO3H-PMS adsorbed on CaOx, and the selective formation of phases of COM and COD. We demonstrated that the presence of anionic moieties on the SO3H-PMS backbone and their concentration were crucial to control the crystal type, morphology, crystal size, and chemical composition.

Zusammenfassung in einer weiteren Sprache

Fachgebiet (DDC)
540 Chemie

Schlagwörter

Sulfonated polymethylsiloxane, Template synthesis, Urolithiasis, Calcium oxalate, Calcium, Crystal growth

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ISO 690NEIRA-CARRILLO, Andrónico, Fabian LUENGO-PONCE, Patricio VÁSQUEZ-QUITRAL, Mehrdad YAZDANI-PEDRAM, Maria Soledad FERNÁNDEZ, Helmut CÖLFEN, José Luis ARIAS, 2015. Sulfonated Polymethylsiloxane as an Additive for Selective Calcium Oxalate Crystallization. In: European Journal of Inorganic Chemistry. 2015(7), pp. 1167-1177. ISSN 0009-2940. eISSN 1099-0682. Available under: doi: 10.1002/ejic.201402063
BibTex
@article{NeiraCarrillo2015Sulfo-30394,
  year={2015},
  doi={10.1002/ejic.201402063},
  title={Sulfonated Polymethylsiloxane as an Additive for Selective Calcium Oxalate Crystallization},
  number={7},
  issn={0009-2940},
  journal={European Journal of Inorganic Chemistry},
  pages={1167--1177},
  author={Neira-Carrillo, Andrónico and Luengo-Ponce, Fabian and Vásquez-Quitral, Patricio and Yazdani-Pedram, Mehrdad and Fernández, Maria Soledad and Cölfen, Helmut and Arias, José Luis}
}
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    <dcterms:abstract xml:lang="eng">Sulfonated and fluorescent polymethylsiloxanes (SO&lt;sub&gt;3&lt;/sub&gt;H-PMS) were synthesized, and their effect as additives on in vitro calcium oxalate (CaOx) crystallization was evaluated. SO&lt;sub&gt;3&lt;/sub&gt;H-PMS was prepared by hydrosilylation and sulfonation reactions with poly(dimethylsiloxane-co-hydrogenmethylsiloxane) (PDMS-co-PMHS). Several analytical tools were used to investigate the morphology, crystal structure, and chemical contents of the harvested CaOx crystals. Varying the concentration of SO&lt;sub&gt;3&lt;/sub&gt;H-PMS induces a transition of CaOx monohydrate (COM) with expanded multilayer and circular stacked-sheet morphologies as well as of the bipyramidal CaOx dihydrate (COD) crystals in three crystallization procedures. Energy-dispersive X-ray spectroscopy (EDS) and XRD allowed detecting the presence of Si (0.2–1.0°wt.-%), which stems from SO&lt;sub&gt;3&lt;/sub&gt;H-PMS adsorbed on CaOx, and the selective formation of phases of COM and COD. We demonstrated that the presence of anionic moieties on the SO&lt;sub&gt;3&lt;/sub&gt;H-PMS backbone and their concentration were crucial to control the crystal type, morphology, crystal size, and chemical composition.</dcterms:abstract>
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