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1 article(s) from Sarkar, Tanmay

Anthracene appended pyridinium amide–urea conjugate in selective fluorometric sensing of L-N-acetylvaline salt

Kumaresh Ghosh,
Tanmay Sarkar and
Asoke P. Chattopadhyay

Beilstein J. Org. Chem. 2010, 6, 1211–1218, doi:10.3762/bjoc.6.139

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Figure 1: Synthesized compounds 1 and 2.

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Scheme 1: Syntheses of 1 and 2.

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Figure 2: Change in ¹H NMR of (A) 1 (400 MHz, CDCl₃ containing 0.4% d₆-DMSO; c = 2.80 × 10⁻³ M) and in the pr...

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Figure 3: Change in fluorescence ratio of 1 upon addition of one equivalent of anions (c = 4.31 × 10⁻⁵ M) at ...

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Figure 4: Change in emission of 1 (c = 4.31 × 10⁻⁵ M) upon gradual addition of tetrabutylammonium salts of (a...

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Figure 5: Suggested modes of binding of the amino acid salts into the open cleft of 1.

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Figure 6: Fluorescence titration curves for 1 (c = 4.31 × 10⁻⁵ M) at 492 nm.

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Figure 7: Fluorescence decays (at λ_max = 420 nm) of receptor 1 upon the addition of 1 equiv of L-N-acetylvali...

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Figure 8: Change in absorbance of 1 (c = 4.31 × 10⁻⁵ M) upon gradual addition of tetrabutylammonium salts of ...

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Figure 9: DFT optimized geometry of the complex of 1 with L-N-acetylvaline carboxylate salt [a = 1.93 Å, b = ...

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Letter

Published 21 Dec 2010

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