Change search
ReferencesLink to record
Permanent link

Direct link
Iron( III)-Quantity-Dependent Aggregation-Dispersion Conversion of Functionalized Gold Nanoparticles
KTH, School of Biotechnology (BIO), Theoretical Chemistry and Biology.ORCID iD: 0000-0001-6508-8355
Show others and affiliations
2014 (English)In: Chemistry - A European Journal, ISSN 0947-6539, E-ISSN 1521-3765, Vol. 20, no 14, 4032-4037 p.Article in journal (Refereed) Published
Abstract [en]

Developing gold nanoparticles (AuNPs) with well-designed functionality is highly desirable for boosting the performance and versatility of inorganic-organic hybrid materials. In an attempt to achieve ion recognition with specific signal expressions, we present here 4-piperazinyl-1,8-naphthalimide-functionalized AuNPs for the realization of quantitative recognition of Fe-III ions with dual (colorimetric and fluorescent) output. The research takes advantage of 1)quantity-controlled chelation-mode transformation of the piperazinyl moiety on the AuNPs towards Fe-III, thereby resulting in an aggregation-dispersion conversion of the AuNPs in solution, and 2)photoinduced electron transfer of a naphthaimide fluorophore on the AuNPs, thus leading to reversible absorption and emission changes. The functional AuNPs are also responsive to pH variations. This strategy for realizing the aggregation-dispersion conversion of AuNPs with returnable signal output might exhibit application potential for advanced nanoscale chemosensors.

Place, publisher, year, edition, pages
2014. Vol. 20, no 14, 4032-4037 p.
Keyword [en]
gold, iron, nanoparticles, sensors, surface plasmon resonance
National Category
Chemical Sciences
URN: urn:nbn:se:kth:diva-144931DOI: 10.1002/chem.201303958ISI: 000333447200022ScopusID: 2-s2.0-84897916341OAI: diva2:716099

QC 20140508

Available from: 2014-05-08 Created: 2014-05-05 Last updated: 2014-05-08Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Li, XinÅgren, Hans
By organisation
Theoretical Chemistry and Biology
In the same journal
Chemistry - A European Journal
Chemical Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 48 hits
ReferencesLink to record
Permanent link

Direct link