Aggregation of superparamagnetic iron oxide nanoparticles in dilute aqueous dispersions: Effect of coating by double-hydrophilic block polyelectrolyte

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F15%3A10295753" target="_blank" >RIV/00216208:11310/15:10295753 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67179843:_____/15:00452239 RIV/61389013:_____/15:00452239

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S0927775715300868" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0927775715300868</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.colsurfa.2015.07.008" target="_blank" >10.1016/j.colsurfa.2015.07.008</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Aggregation of superparamagnetic iron oxide nanoparticles in dilute aqueous dispersions: Effect of coating by double-hydrophilic block polyelectrolyte

Popis výsledku v původním jazyce

tPolymer-coated superparamagnetic iron oxide nanoparticles (SPION) in aqueous dispersion wereprepared by the coassembly of SPION coated by an oleate bilayer with the double hydrophilic block poly-electrolyte poly[(3,5-bis(trimethylammoniummethyl)-4-hydroxystyrene iodide]-block-poly(ethyleneoxide) (QNPHOS-PEO) and characterized by TEM and AFM. It was found that the coating by QNPHOS-PEOaffects their aggregation into larger structures on the micrometer length scale observed by small-anglelight scatteringas well as the dynamics of the dispersion observed by dynamic light scattering. Oleate-SPION in aqueous dispersions form compact aggregates with the fractal dimension, D = 2.4, and thecharacteristic size about 2 m which exhibit internal dynamics manifesting itself by the presence ofthe relaxation mode with TILDE OPERATOR+D91 qMINUS SIGN 3. In the case of QNPHOS-PEO/oleate-SPION dispersions, the polyelec-trolyte coating promotes the formation of compact clusters with the size of the order

Název v anglickém jazyce

Aggregation of superparamagnetic iron oxide nanoparticles in dilute aqueous dispersions: Effect of coating by double-hydrophilic block polyelectrolyte

Popis výsledku anglicky

tPolymer-coated superparamagnetic iron oxide nanoparticles (SPION) in aqueous dispersion wereprepared by the coassembly of SPION coated by an oleate bilayer with the double hydrophilic block poly-electrolyte poly[(3,5-bis(trimethylammoniummethyl)-4-hydroxystyrene iodide]-block-poly(ethyleneoxide) (QNPHOS-PEO) and characterized by TEM and AFM. It was found that the coating by QNPHOS-PEOaffects their aggregation into larger structures on the micrometer length scale observed by small-anglelight scatteringas well as the dynamics of the dispersion observed by dynamic light scattering. Oleate-SPION in aqueous dispersions form compact aggregates with the fractal dimension, D = 2.4, and thecharacteristic size about 2 m which exhibit internal dynamics manifesting itself by the presence ofthe relaxation mode with TILDE OPERATOR+D91 qMINUS SIGN 3. In the case of QNPHOS-PEO/oleate-SPION dispersions, the polyelec-trolyte coating promotes the formation of compact clusters with the size of the order

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

—

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Colloids and Surfaces A: Physicochemical and Engineering Aspects

ISSN

0927-7757

e-ISSN

—

Svazek periodika

483

Číslo periodika v rámci svazku

October

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

1-7

Kód UT WoS článku

000362146200001

EID výsledku v databázi Scopus

2-s2.0-84937852079