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To design the assembly of ordered structures at macroscopic level,the strategy of anisotropic surface modifications or magnetic induced assembly provides possible methods; however,there remain challenges to either fabricate complex building blocks or stepwise construct with magnetic field.Therefore,we have introduced feasible approach of size selectivity in programming of the supramolecular assembling components by selecting and optimizing the diameter/height(d/H)ratio of cylindrical building blocks.Based on the principle of flexible spacing coating for realization of macroscopic supramolecular assembly,we have obtained preferred geometry of complementary assembled structure associated with host-guest interaction by using an optimized d/H ratio.Moreover,the size selectivity was further understood through in situ measurements of binding forces between building blocks.