Based on the dibenzo-24-crown-8/1,2-bis(pyridinium) ethane recognition motif, a hyperbranched mechanically interlocked polymer was prepared by polyesterification of an easily available dynamic trifunctional AB(2) pseudorotaxane monomer. It was characterized by various techniques including H-1 NMR, COSY, NOESY, GPC, viscosity, TGA, dynamic laser light scattering, AFM, and SEM Its GPC M-n was determined to be 191 kDa with polydispersity 1 7 and its hydrodynamic diameter in a dilute solution in acetone was about 70 nm. This measured M-n value corresponds to about 93 repeating units The study reported here presents not only a new polymer topology but also a novel and convenient way to prepare mechanically interlocked polymers (C) 2010 Wiley Periodicals, Inc J Polym Sci Part A Polym Chem 48 4067-4073, 2010