Development of a new dual polarity and viscosity probe based on the foldamer concept. - Miguel D; Morcillo SP; Martín-Lasanta A; Fuentes N; Martínez-Fernández L; Corral I; Ruedas-Rama MJ; Cárdenas DJ; Álvarez de Cienfuegos L; Orte A; Cuerva JM (Organic letters, 2015)