Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist gegebenenfalls nur via VPN oder Shibboleth (DFN-AAI) möglich. mehr Informationen...
A novel ratiometric sensor for fluorimetric and visual dual-mode detection of Al in environmental water based on the target-regulated formation of Eu MOFs
Herein, a novel ratiometric sensor for fluorimetric and smartphone-assisted visual detection of Al
3+
in environmental water was developed based on the target-regulated formation of Eu metal-organic frameworks (Eu MOFs). By employing 2-[4-(2-hydroxyethyl) piperazin-1-yl] ethanesulfonic acid (Hepes), Eu
3+
and tetracycline (TC) as raw materials, Eu MOFs with red emission were facilely synthesized through the coordination of Eu
3+
with Hepes and TC. However, upon the introduction of Al
3+
, a higher affinity of TC towards Al
3+
resulted in the formation of a TC-Al
3+
complex with green fluorescence and inhibited the generation of Eu MOFs. This led to an increase in green fluorescence and a decrease in red fluorescence accompanied by the fluorescence color of the solution changing from red to green under the illumination of the UV lamp. Thus, a ratiometric sensor for fluorimetric and the smartphone-assisted visual detection of Al
3+
was established. The ratiometric sensor exhibited high sensitivity for Al
3+
detection with a detection limit of 0.14 μM for fluorescence detection and 1.21 μM for visual detection. Additionally, the proposed strategy was successfully applied to detect Al
3+
in the environmental water samples with satisfactory results, indicating great application prospects for environmental monitoring.
The illustration of the ratiometric sensor for fluorimetric (A) and visual detection (B) of Al
3+
.
Sprache
–
Identifikatoren
ISSN: 1759-9660
eISSN: 1759-9679
DOI: 10.1039/d4ay00324a
Titel-ID: cdi_rsc_primary_d4ay00324a
Format
–
Weiterführende Literatur
Empfehlungen zum selben Thema automatisch vorgeschlagen von bX