Oligoindole-based foldamers with a helical conformation induced by chloride

KJ Chang, BN Kang, MH Lee…

Index: Chang, Kyoung-Jin; Kang, Byung-Nam; Lee, Min-Hee; Jeong, Kyu-Sung Journal of the American Chemical Society, 2005 , vol. 127, # 35 p. 12214 - 12215

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Citation Number: 149

Abstract

As a new type of foldamers, oligoindoles containing 4, 6, and 8 indole rings were synthesized, and their folding properties were characterized by a combination of 1H NMR techniques and UV/visible titration experiments. When chloride was added, the NH signals of the oligoindoles were downfield shifted as a result of hydrogen-bond formation, and the aromatic signals were upfield shifted by stacking between two indoles. Moreover, the ...