Novel pseudo[2]rotaxanes constructed by the self-assembly of dibenzyl tetramethylene bis-carbamate derivatives and per-ethylated pillar[5]arene

Novel neutral guest molecules, G1-G7, are studied for their host-guest complexation with per-ethylated pillar[5]arene (EtP[5]A). Among them, G1 and G7, dibenzyl tetramethylene bis-carbamate derivatives, are found to afford a novel stable pseudo[2]rotaxane with EtP[5]A, respectively, and G7 subset of EtP[5]A shows photoresponsive properties.