Zn
Disclosed herein are mixed metal-organic frameworks, Zn 3 (BDC) 3 [Cu(SalPycy)] and Zn 3 (CDC) 3 [Cu(SalPycy)], wherein BDC is 1,4-benzenedicarboxylate, CDC is 1,4-cyclohexanedicarboxylate, and SalPyCy is a ligand of the formula: These are useful for applications such as selective gas storage, selective molecular separations, and selective detection of molecules, including enantioselective applications thereof.
1. A mixed-metal-organic framework (M′MOF) comprising a repeat unit of the formula Zn 3 (BDC) 3 [Cu(SalPyCy)] or Zn 3 (CDC) 3 [Cu(SalPyCy)], wherein BDC is 1,4-benzenedicarboxylate, CDC is 1,4-cyclohexanedicarboxylate, and SalPyCy is a ligand of the formula:
2. The M′MOF of claim 1 , wherein the repeat unit is of the formula Zn 3 (BDC) 3 [Cu(SalPyCy)].
3. The M′MOF of claim 1 , wherein the repeat unit is of the formula Zn 3 (CDC) 3 [Cu(SalPyCy)].
4. The M′MOF of claim 1 , wherein the stereochemistry of the SalPyCy ligand is further defined as:
wherein R indicates the stereochemical conformation of the indicated carbon atoms.
5. The M′MOF of claim 1 , further comprising one or more than one type of guest molecule.
6. The M′MOF of claim 5 , wherein one type of guest molecules is a solvent molecule.
7. The M′MOF of claim 6 , wherein the solvent molecule is water.
8. The M′MOF of claim 6 , wherein the solvent molecule is N,N′-dimethylformamide.
9. The M′MOF of claim 6 , wherein one type of guest molecules is 1-phenylethanol.
10. The M′MOF of claim 5 , wherein one type of guest molecule is a gas molecule.
11. The M′MOF of claim 10 , wherein the gas molecule is H 2 , N 2 , Ar, O 2 , CO 2 , NO, NO 2 or CO.
12. The M′MOF of claim 5 , wherein one type of guest molecule is an alkane (C1-6) , alkene (C2-4) , alkyne (C2-6) , alcohol (C1-6) , arene (C6-8) or a substituted version of any of these.
13. The M′MOF of claim 12 , wherein one type of guest molecule is an alkene (C2-6) .
14. The M′MOF of claim 13 , wherein the alkene (C2-6) is C 2 H 4 , C 3 H 6 , C 4 H 8 , C 5 H 10 or C 6 H 12 .
15. The M′MOF of claim 14 , wherein the alkene (C2-6) is C 2 H 4 .
16. The M′MOF of claim 5 , wherein one type of guest molecule is an alkyne (C2-6) .
17. The M′MOF of claim 16 , wherein the alkyne (C2-6) is C 2 H 2 .
18. A method of storing a compound within a mixed-metal-organic framework (M′MOF) comprising:
(a) obtaining an M′MOF comprising a repeat unit of the formula Zn 3 (BDC) 3 [Cu(SalPyCy)] or Zn 3 (CDC) 3 [Cu(SalPyCy)], wherein BDC is 1,4-benzenedicarboxylate, CDC is 1,4-cyclohexanedicarboxylate, and SalPyCy is a ligand of the formula:
and
(b) combining the M′MOF with a first compound such that the first compound is contained within the M′MOF.
19. A method of detecting a compound using an M′MOF comprising:
(a) obtaining an M′MOF comprising a repeat unit of the formula Zn 3 (BDC) 3 [Cu(SalPyCy)] or Zn 3 (CDC) 3 [Cu(SalPyCy)], wherein BDC is 1,4-benzenedicarboxylate, CDC is 1,4-cyclohexanedicarboxylate, and SalPyCy is a ligand of the formula:
(b) combining the M′MOF with a first compound such that the first compound enters the M′MOF to form an M′MOF.guest complex; and
(c) comparing the photoluminescence intensity of the M′MOF with the photoluminescence intensity of the M′MOF.guest complex so as to detect the first compound.
20. A method of separating two or more compounds using an M′MOF comprising:
(a) obtaining a mixed-metal-organic framework (M′MOF) comprising a repeat unit of the formula Zn 3 (BDC) 3 [Cu(SalPyCy)] or Zn 3 (CDC) 3 [Cu(SalPyCy)], wherein BDC is 1,4-benzenedicarboxylate, CDC is 1,4-cyclohexanedicarboxylate, and SalPyCy is a ligand of the formula:
(b) combining the M′MOF with a mixture comprising a first compound and a second compounds; and
(c) separating the two or more compounds based on their differential diffusion rate within the M′MOF.