Chiral gels derived from secondary ammonium salts of (1R,3S)-(+)-camphoric acid

Abstract

In order to have access to chiral gels, a series of salts derived from (1R,3S)-(+)-camphoric acid and various secondary amines were prepared based on supramolecular synthon rationale. Out of seven salts prepared, two showed moderate gelation abilities. The gels were characterized by differential scanning calorimetry, table top rheology, scanning electron microscopy, single crystal and powder X-ray diffraction. Structure property correlation based on X-ray diffraction techniques remain inconclusive indicating that some of the integrated part associated with the gelation phenomena requires a better understanding.

Keywords

• crystal engineering
• LMOG
• single crystal X-ray diffraction
• supramolecular gels
• supramolecular synthon