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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 30, Number 6
BKCSDE 30(6)
June 20, 2009

Title	Molecular Recognition of Neutral Substrates by New Tetraaminocalix[4]arene Derivative
Author	Satish Balasaheb Nimse, Keum Soo Song, Chan Yong Jung, Woon Yong Eoum, Taisun Kim*
Keywords	Tetraaminocalixarene, Molecular recognition, Neutral substrates, Deep cavity
Abstract	The recognition of neutral aromatic substrates by different neutral calix[4]arene receptors 1, 2, and 3 was studied by NMR spectroscopy. The stoichiometry is 1:1 in all cases as was confirmed by jobs plot. Owing to the deep cavity, 1 affords stronger binding abilities for substrate 4 and 5, while all receptors remained inert for substrates 6 and 7. The binding constants determined by 1H NMR titration show that the recognition of substrate 4 by 1 gives strongest complexation (Ka of 9.8 × 10² M^-1).
Page	1247 - 1251
Full Text	PDF

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