H.G. Lee et al. / Inorganica Chimica Acta 394 (2013) 542–551
551
Fig. 14. Competitive selectivity of receptor QP (5
l
M) toward Zn2+ ions (5
l
M) in the presence of other metal ions (5
l
M Mn+ blue, 10
l
M Mn+ red, 25
l
M Mn+ yellow, and
n+
1
00 lM M green). (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)
fluorescence enhancement. QP shows selective fluorescence for
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2
+
Zn and not for other transition metal ions. The DPA group of zinc
sensors is able to conform to different structures from meridional
[
2+
to facial. The fluorescence enhancement of Zn binding to QA is
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1
(b) K. Kiyose, H. Kojima, Y. Urano, T. Nagano, J. Am. Chem. Soc. 128 (2006)
greatly enhanced by adding base. The H NMR chemical shift
6
(
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+
of DPA binding.
(
1
Acknowledgments
(
(
(
e) P. Das, S. Bhattacharya, S. Mishra, A. Das, Chem. Commun. 47 (2011) 8118;
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Financial support from Korean Science & Engineering Founda-
tion (2009-0074066), Converging Research Center Program
through the National Research Foundation of Korea (NRF) funded
by the Ministry of Education, Science and Technology (2009-
11 (2009) 795.
[
[
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[
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crystallographic data for complexes NA–Zn(NO
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2
(
[
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