Chemical framework compositions and methods of use

A metal organic framework comprising a linking moiety connecting at least two metals, the linking moiety having the structure:

• wherein, FG refer to functional linking groups selected from the group consisting of CO2H, CS2H, NO2, SO3H, Si(OH)3, Ge(OH)3, Sn(OH)3, Si(SH)4, Ge(SH)4, Sn(SH)4, PO3H, AsO3H, AsO4H, P(SH)3, As(SH)3, CH(RSH)2, C(RSH)3, CH(RNH2)2, C(RNH2)3, CH(ROH)2, C(ROH)3, CH(RCN)2, C(RCN)3, CH(SH)2, C(SH)3, CH(NH2)2, C(NH2)3, CH(OH)2, C(OH)3, CH(CN)2, and C(CN)3, that undergo condensation with a metal to link the at least two metals, wherein R is an alkyl group having from 1 to 5 carbon atoms, or an aryl group comprising 1 to 2 phenyl rings and wherein the functional linking group forms a coordination complex with the metals;
• and
• wherein R1 and R4 are linked together to form a macrocycle and/or wherein R2 and R3 are linked together to form a macrocycle, wherein the macrocycle linking R1 and R4 and/or the macrocycle linking R2 and R3 each comprises seven or more ring atoms.