Synthesis and host–guest properties of a calix[6]arene based receptor closed by an internal ion-paired cap
摘要:
The straightforward synthesis of a C, symmetrical calix[6]arene possessing carboxylic acid groups as well as an ammonium arm is described. This calixarene can encapsulate ammonium ions through a highly selective recognition process thanks to the presence of an internal ion-paired cap that preorganizes the cavity and constitutes an efficient binding site. (c) 2008 Elsevier Ltd. All rights reserved.
Synthesis and host–guest properties of a calix[6]arene based receptor closed by an internal ion-paired cap
摘要:
The straightforward synthesis of a C, symmetrical calix[6]arene possessing carboxylic acid groups as well as an ammonium arm is described. This calixarene can encapsulate ammonium ions through a highly selective recognition process thanks to the presence of an internal ion-paired cap that preorganizes the cavity and constitutes an efficient binding site. (c) 2008 Elsevier Ltd. All rights reserved.