A　novel　porous　anionic　metal-organic　framework,　(Me2NH2)(2)[Zn(2)L(1.5)bpy]center　dot　2DMF　(BUT-201;　H4L=4,8-disulfonaphthalene-2,6-dicarboxylic　acid;　bpy=4,4-bipyridine;　DMF=N,N-dimethylformamide),　with　pillared　double-layer　structure　has　been　synthesized　through　the　reaction　of　a　sulfonated　carboxylic　acid　ligand　and　Zn(NO3)2　center　dot　6H(2)O　with　4,4-bipyridine　as　a　co-ligand.　It　is　found　that　BUT-201　can　rapidly　adsorb　cationic　dyes　with　a　smaller　size　such　as　Methylene　Blue　(MB)　and　Acriflavine　Hydrochloride　(AH)　by　substitution　of　guest　(CH3)(2)NH2+,　but　has　no　adsorption　towards　the　cationic　dyes　with　a　lager　size　such　as　Methylene　Violet　(MV),　the　anionic　dyes　like　C.　I.　Acid　Yellow　1　(AY1)　and　neutral　dyes　like　C.　I.　Solvent　Yellow　7　(SY7),　respectively.　The　results　show　that　the　adsorption　behavior　of　BUT-201　relates　not　only　to　the　charge　but　also　to　the　size/shape　of　dyes.　Furthermore,　the　adsorbed　dyes　can　be　gradually　released　in　the　methanol　solution　of　LiNO3.　(C)　2015　Elsevier　Inc.　All　rights　reserved.