摘要
Two organophosphate-functionalized hybrid polyoxomolybdates dodecahedra(NH_(4))_(21)H^(+)59[MoⅤ_(180)Mo^(Ⅵ)60(OH)_(60)O_(620)(C_(6)H_(5)PO_(3))_(20)]·260H_(2)O(1)and(NH_(4))_(21)H^(+)59[Mo^(Ⅴ)180Mo^(Ⅵ)60(OH)_(60)O_(620)(NC_(5)H_(4)PO_(3))_(20)]·260H_(2)O(2)are constructed under hydrothermal conditions.In both structures,20 phenylphosphonic acids or pyridyl-4-phosphonic acids are simultaneously grafted onto the interior of the{Mo_(240)}dodecahedral cage,forming an organic-inorganic polyoxomolybdate hybrids.The introduction of more strongly coordinated phenylphosphonic and pyridyl-4-phosphonic acid within the inner surface of{Mo_(240)}altered the microenvironment within the cage.Both structures exhibit good water and thermal stabilities.Furthermore,crystals 1 and 2 were selected for adsorption of cationic dyes with the same charge and different sizes,which showed significant scavenging effect on the large size of cationic dyes.This study provides a new perspective on the functionalization of polyoxometalate cages.
基金
financially supported by the NSFC of China(Grant Nos.22271023 and 22175033)。
