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Zeitschriftenartikel:

C. Carrillo-Carrión, B. Lendl, B. Simonet, M. Valcárcel:
"Calix[8]arene Coated CdSe/ZnS Quantum Dots as C60-Nanosensor";
Analytical Chemistry, 83 (2011), 21; S. 8093 - 8100.



Kurzfassung deutsch:
Here, we report an optical sensor for fullerene
C60 in water using CdSe/ZnS quantum dots coated by ptertbutylcalix[
8]arene. This C60-nanosensor is based on the
selective host guest interaction between fullerene C60 and ptertbutylcalix[
8]arene. The procedure for the synthesis of ptertbutylcalix[
8]arene-CdSe/ZnS complex is described, and its
fluorescent characteristics are also reported. We found that the
interaction between C60 fullerene and p-tertbutylcalix[8]arene-
CdSe/ZnS complex quenches the original fluorescence of calix-
QDs according to the Stern Volmer equation. The mechanism of interaction is discussed. Finally, the potential application of the
proposed method using the designed nanosensor for determination of C60 in spiked environmental river water samples is
demonstrated. For the analysis of river samples, a liquid liquid extraction multistep preconcentration procedure is proposed. The
method, which is simple and rapid, allows the detection of 5 μg L 1 of fullerene. This sensor could be a useful tool for environmental
and toxicological studies.

Kurzfassung englisch:
Here, we report an optical sensor for fullerene
C60 in water using CdSe/ZnS quantum dots coated by ptertbutylcalix[
8]arene. This C60-nanosensor is based on the
selective host guest interaction between fullerene C60 and ptertbutylcalix[
8]arene. The procedure for the synthesis of ptertbutylcalix[
8]arene-CdSe/ZnS complex is described, and its
fluorescent characteristics are also reported. We found that the
interaction between C60 fullerene and p-tertbutylcalix[8]arene-
CdSe/ZnS complex quenches the original fluorescence of calix-
QDs according to the Stern Volmer equation. The mechanism of interaction is discussed. Finally, the potential application of the
proposed method using the designed nanosensor for determination of C60 in spiked environmental river water samples is
demonstrated. For the analysis of river samples, a liquid liquid extraction multistep preconcentration procedure is proposed. The
method, which is simple and rapid, allows the detection of 5 μg L 1 of fullerene. This sensor could be a useful tool for environmental
and toxicological studies.


"Offizielle" elektronische Version der Publikation (entsprechend ihrem Digital Object Identifier - DOI)
http://dx.doi.org/10.1021/ac201134d


Erstellt aus der Publikationsdatenbank der Technischen Universitšt Wien.