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Beilstein J. Org. Chem. 2010, 6, No. 44, doi:10.3762/bjoc.6.44
Graphical Abstract
Scheme 1: Adenine-based receptors 1 and 2.
Scheme 2: Syntheses of receptors 1 and 2.
Figure 1: Design principle for 1 and 2.
Figure 2: AM1 optimized geometries of 1 (E = −162.48 au) of 2 (E = −139.59 au).
Figure 3: a) Fluorescence ratio (I-I0/I0) of receptor 1 (c = 5.09 × 10−5 M) at 413 nm upon addition of 20 equ...
Figure 4: Emission spectra of receptor 1 (c = 5.09 × 10−5 M) during titration with Cu2+ ion (c = 1.4 × 10−3 M...
Figure 5: a) Emission spectra of receptor 2 (c = 1.48 × 10−5 M) during titration with Cu2+ ion (c = 4.4 × 10−4...
Figure 6: Stern–Volmer plot of receptor 2 (c = 1.48 × 10−5 M) at 413 nm upon addition of 20 equiv of a partic...
Figure 7: Change in emission of 1 (c = 8.66 × 10−5 M) (a) and 2 (c = 1.29 × 10−4 M) (b) upon addition of 10 e...
Figure 8: a) Binding constant curve for 1 with Cu2+ ion; b) binding constant curve for 2 with Cu2+ ion.
Figure 9: a) Absorption spectra of receptor 1 (c = 5.09 × 10−5 M) upon gradual addition of Cu2+ ion (c = 1.4 ...
Figure 10: a) Absorption spectra of receptor 2 (c = 1.48 × 10−5 M) upon gradual addition of Ag+ ion (c = 4.4 ×...
Figure 11: Absorption spectra of anthracene (c = 2.39 × 10−5 M) upon gradual addition of Cu2+ ion (c = 1.20 × ...