✍ Scribed by Pavel Lhoták; Seiji Shinkai
No coin nor oath required. For personal study only.
Non-covalent intermolecular forces have been recognized as a very important part of molecular interactions in complex biological systems. The fundamental functions of living matter such as transcription of genetic information in DNA, spatial arrangement of protein molecules, enzymatic functions or immunity system response are enabled owing to the presence of weak non-covalent forces based on hydrogen bonding interactions, van der Waals interactions, electrostatic interactions, hydrophobic effects, etc. Recently, among them so-called 'cation-' interactions have been proved to contribute to the overall binding process in various artificial or biological systems. Calix[n]arenes have emerged as an important family of molecules with promising applications in many branches of chemistry. Because of their suitable molecular preorganization with aromatic units being 'concentrated' in a relatively small space, calix[n]arenes represent interesting compounds exhibiting an enhanced ability for cation-interactions. The importance of such forces in calix[n]arene chemistry is demonstrated here on several recent examples.
📜 SIMILAR VOLUMES
## Abstract Complexation between Rhodamine B (RB) and sulfonated calix [__n__] arenes (SC__n__A) were studied by means of UV‐vis spectroscopy and fluorescence spectroscopy. In the presence of sulfonated calix[__n__] arenes, the absorption band of Rhodamine B shifts to longer wavelength and its inte
## Abstract The apparent __K__~a~ values of the formation of [1+1] cavitand‐calix[4]arene capsules, based on azinium–sulfonate electrostatic interactions, obtained by direct titration experiments are concentration dependent due to the influence of the interaction of the charged capsule components w