The　gemini　surfactants,　O,O’-bis(sodium　2-dodecyl-carboxylate)-p-dibenzenediol　and　O,O’-bis(sodium　2-decylcarboxylate)-p-dibenzenediol　(denoted　as　C12ϕ2C12　and　C10ϕ2C10,　respectively),　were　previously　found　to　form　network-like　aggregates　in　very　dilute　solution.　In　the　present　work,　the　effect　of　alkyltrimethylammonium　bromides,　CnNBr,　on　the　network-like　aggregates　formed　by　C12ϕ2C12　and　C10ϕ2C10　was　studied　using　dynamic　light　scattering,　fluorescence　probing,　steady-state　or　frequency　sweep　rheology,　and　freeze-fractured　TEM　measurements.　These　network-like　aggregates　were　easily　transformed　into　core-shell　micelles　as　CnNBr　was　added,　including　spherical　micelles　and　even　thread-like　micelles,　upon　increased　concentration　of　CnNBr.　On　further　increasing　CnNBr　concentration,　vesicles　were　formed.　The　phase　diagrams　of　aggregate　transition　were　plotted.　All　of　these　were　attributed　to　the　improvement　of　added　CnNBr　on　the　effective　molecule　geometry　under　the　base　of　original　columnar-like　molecules　of　C12ϕ2C12/C10ϕ2C10.　©　2015,　Springer-Verlag　Berlin　Heidelberg.