This　paper　reports　a　study　on　the　aggregation　and　rheological　behavior　of　the　family　of　O,O＇-bis(sodium　2-alkylcarboxylate)-p-dibenzenediol　(referred　to　as　C-m　phi　Cm-2,　m=10,　12,　14,　respectively)　in　aqueous　solution　using　dynamic　light　scattering,　H-1　NMR　and　rheology　measurements.　The　results　showed　that　all　three　surfactants　formed　large　network-like　aggregates　at　low　concentrations.　However,　C-10　phi　C-2(10)　formed　small　compact　micelles　simultaneously　but　neither　C-12　phi　C-2(12)　nor　C-14　phi　C-2(14)　did.　These　network-like　aggregates　were　transformed　into　the　wormlike　micelles　with　increasing　the　surfactant　concentration.　The　length　of　alkyl　tails　was　found　to　strongly　affect　the　viscoelasticity　of　wormlike　micellar　solutions.　From　C-10　phi　C-2(10),　C-12　phi　C-2(12)　to　C-14　phi　C-2(14)　in　turn,　the　system　developed　rapidly　from　the　viscous　fluid　to　typically　viscoelastic　solution　and　then　to　a　solid-like　gel.　The　scaling　exponents　of　the　concentration　dependence　of　both　zero-shear　viscosity　(eta(0))　and　plateau　elastic　modulus　(G(infinity)＇)　greatly　exceeded　the　theoretic　predictions,　showing　fast　micellar　growth　and　strong　entanglements　between　the　wormlike　micelles.　For　C-14　phi　C-2(14)　that　had　the　longest　alkyl　tails　in　this　series,　the　wormlike　micelles　formed　at　140mmol　L-1　were　quite　long　and　the　micellar　reptation　dominated　over　the　scission　and　recombination.　This　system　yielded　a　viscosity　as　high　as　2.20x10(4)　Pa.s　at　25　degrees　C.