With the idea in mind that the guest (C 70 and C 18 ) and host (OPP and [11]CPP) of the two supramolecular complexes mentioned above (can be written as C 70 @OPP and C 18 @[11]CPP) are of respectively comparable homogeneity and cavity (Scheme 1), and that there has not been any reported construction of complex using the newly generated C 18 and OPP, we theoretically explored the characteristics of the host-guest complexes assembled by them. Considering the potential energy surface (PES) of a ππ non-covalent system they might construct would generally be quite flat and the transition between the energy local minima will be easy and fast at ambient temperature, we examined the rotational behavior of C 18 in OPP and pleasantly surprised that C 18 moiety can be stably bound in the cavity of OPP and can rotate smoothly there in an ultrafast way. In particular, benefiting from the unusual dualloop configuration with large included angle of the OPP, the encapsulation of C 18 by OPP is expected to form host-guest nanorotators up to 1:2. Although great progress has been achieved in construction of host-guest complexes with different functions, the current work is, to our knowledge, the first complete report on the characteristic properties, self-assembly behavior, and temperature-dependent dynamics of dualmotor nanorotator.