Development of a chromium speciation probe based on morphology-dependent aggregation of polymerized vesicle-functionalized gold nanoparticles
| dc.contributor.author | Kapakoglou, N. I. | en |
| dc.contributor.author | Giokas, D. L. | en |
| dc.contributor.author | Tsogas, G. Z. | en |
| dc.contributor.author | Ladavos, A. K. | en |
| dc.contributor.author | Vlessidis, A. G. | en |
| dc.date.accessioned | 2015-11-24T16:55:56Z | |
| dc.date.available | 2015-11-24T16:55:56Z | |
| dc.identifier.issn | 0003-2654 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/10369 | |
| dc.rights | Default Licence | - |
| dc.subject | heavy-metal ions | en |
| dc.subject | aqueous-media | en |
| dc.subject | recognition | en |
| dc.subject | surfactants | en |
| dc.subject | chemistry | en |
| dc.subject | nanorods | en |
| dc.title | Development of a chromium speciation probe based on morphology-dependent aggregation of polymerized vesicle-functionalized gold nanoparticles | en |
| heal.abstract | In this work, a new approach for visual sensing of Cr(3+) in aqueous solutions is presented, based on the morphological changes induced by Cr(3+) on (4-carboxybenzyl)bis[2-(undec-10enyloxycarbonyl)ethyl] methylammonium bromide (4-CBUAB)-polymerized vesicles. CTAB-stabilized gold nanoparticles (GNPs) react with 4-CBUAB-polymerized vesicles to form aggregates via vesicle micelle interactions, which does not proceed further because of vesicle-vesicle repulsive forces, creating a large polymerized vesicle-gold nanoparticle (PV-GNP) conjugate. The incorporation of Cr(3+) through the 4-CBUAB polymeric membrane induces structural perturbations on the polymerized vesicle morphology by swelling of the lamellar phase which is reflected in the morphology of the polymerized vesicle-gold nanoparticle conjugate assembly. These steric perturbations induce a linear increase in the absorbance of the solutions as a function of Cr(3+) concentration, a feature which was exploited for the analytical determination of Cr(3+) in real samples. Owing to the high selectivity of the polymerized vesicular aggregate no interferences from co-existing species were observed, enabling the determination and speciation of Cr(3+) in real samples with minimal sample pre-treatment and without preconcentration. The analytical merits afford detection limits as low as 0.72 mg L(-1) by extracting only 5 mL of sample volume with satisfactory reproducibility (RSD = 5.21%, C = 10 mu g L(-1), n = 6), which are directly comparable to those attained with more sophisticated techniques. | en |
| heal.access | campus | - |
| heal.fullTextAvailability | TRUE | - |
| heal.identifier.primary | Doi 10.1039/B909619a | - |
| heal.identifier.secondary | <Go to ISI>://000271864900016 | - |
| heal.identifier.secondary | http://pubs.rsc.org/en/content/articlepdf/2009/an/b909619a | - |
| heal.journalName | Analyst | en |
| heal.journalType | peer reviewed | - |
| heal.language | en | - |
| heal.publicationDate | 2009 | - |
| heal.publisher | Royal Society of Chemistry | en |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας | el |
| heal.type | journalArticle | - |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.type.en | Journal article | en |
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