A guest-induced reversible switching of a self-assembled H-bonded supramolecular framework.

A new class of organic crystalline 2,2'-biphenol-based H-bonded material displaying 1D-channels encapsulating solvent molecules is described. A reversible guest-induced crystal-to-crystal conversion between the solvated H-bonded phase and a compact H-bonded non-solvated phase was observed. The energy competition between intramolecular H-bonds formation and solvation of organic pores has been characterized using PACHA calculations.