Dicyclohexylurea derivatives of amino acids as dye absorbent organogels and anion sensors

Dicyclohexyl urea (DCU) derivatives of amino acids Fmoc-Phe-DCU (M1), Fmoc-Phg-DCU (M2) and Fmoc-Gaba-DCU (M3) have been shown to form phase selective, thermoreversible and mechanically robust gels in a large range of organic solvents. Organogels act as dye adsorbants and M1–M3 act as selective anion sensors for F−, OH− and OAc−.