Supramolecular Two-Component Gels: Donor- Acceptor Interaction Promoted Gelation

Abstract

A novel classes of supramolecular gelators formed gels in various organic solvents at low concentrations in presence of electron deficient or electron rich guest. During gelation of these systems, a substantial color change was observed in most of the cases. The charge-transfer interaction of the gel state was established by temperature dependent UV-Visible spectroscopy. The supramolecular assembly of organogels was examined by both microscopy and spectroscopy. This article focuses on the different types of two-component self-assembling gelation systems which have a significant conceptual difference to their one-component analogues.