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Assembly and co-assemblies of peptide amphiphiles through specific noncovalent forces expand the space of molecular architectonics-driven construction of diverse nanoarchitectures with potential biological applications. In this work, cyclic dipeptide amphiphiles (CDPAs) of cyclo(Gly-Asp) with varying lengths of alkyl chains (C8–C18) were synthesized, and their molecular organization was studied. The noncovalent interactions of the components, CDP and alkyl chain, drive the molecular self-assembly of CDPAs into well-defined and diverse nanoarchitectures such as nanotubes, nanospheres, nano/microsheets, and flowers. The co-assembly of CDPAs with biological molecules such as nucleosides was studied to ascertain their utility as potential drug delivery vehicles. Mechanical properties of these nanoarchitectures in nanoindentation study established them as robust in nature. A temperature-dependent NMR …