A　new　gemini　surfactant　with　a　long　and　rigid　spacer,　O,O＇-bis(sodium　2-dodecylcarboxylate)-p-dibenzenediol　(referred　to　as　C-12　phi　C-2(12)),　has　been　synthesized.　Its　aggregation　in　aqueous　solution　has　been　studied　using　static　and　dynamic　light　scattering　measurements.　The　homologue　O,O＇-bis(sodium　2-dodecylcarboxylate)-p-benzenediol　(C-12　phi　C-12)　whose　spacer　only　contains　a　single　phenyl　group　was　also　examined　for　comparison.　Dynamic　light　scattering　(DLS)　revealed　the　unexpected　existence　of　large　aggregates　in　the　solution　of　C-12　phi　C-2(12).　However,　C-12　phi　C-2(12)　showed　rather　normal　aggregation　behavior.　Both　the　results　of　intrinsic　viscosity　and　light　scattering　demonstrated　a　loose　structure　for　the　large　aggregates　of　C-12　phi　C-2(12).　This　behavior　was　attributed　to　an　extending　configuration　of　C-12　phi　C-2(12)　with　the　two　alkyl　tails　stretching　toward　the　solution　due　to　the　rigidity　of　the　long　spacer.　The　large　network-like　aggregate　formation　was　an　inevitable　outcome　of　spontaneously　reducing　the　energy　of　the　system.　Freeze-fracture　transmission　electron　microscopy　(FF-TEM)　images　and　H-1　NMR　measurements　supported　this　speculation.　Due　to　the　columnar-like　molecular　geometry,　the　large　network-like　aggregates　were　directly　transformed　into　rodlike　micelles　with　increasing　surfactant　concentration.　Depending　on　further　micellar　growth,　the　wormlike　micelles　were　finally　formed　as　confirmed　by　theological　measurements.