TY - JOUR
T1 - Microporous mixed-metal layer-pillared [Zn1-xCu x(bdc)(dabco)0.5] MOFs
T2 - Preparation and characterization
AU - Kozachuk, Olesia
AU - Khaletskaya, Kira
AU - Halbherr, Markus
AU - Bétard, Angélique
AU - Meilikhov, Mikhail
AU - Seidel, Rüdiger W.
AU - Jee, Bettina
AU - Pöppl, Andreas
AU - Fischer, Roland A.
PY - 2012/4
Y1 - 2012/4
N2 - A series of mixed-metal layer-pillared MOFs of general formula [Zn 1-xCux(bdc)(dabco)0.5] (bdc = 1,4-benzenedicarboxylate, dabco = 1,4-diazabicyclo[2.2.2]octane, 0 < x < 1) have been synthesized by a solvothermal approach. Different amounts x of Cu2+ were introduced to substitute for Zn2+ centers. The prepared mixed-metal MOFs were shown to be structurally very similar to their parent monometallic [Zn(bdc)(dabco)0.5] and [Cu(bdc)(dabco) 0.5] frameworks by single-crystal and powder X-ray diffraction studies. Interestingly, upon inclusion of copper, a distortion of the paddle-wheel units is observed. In addition, the incorporation of Cu 2+ ions into the [Zn2(bdc)(dabco)0.5] framework and the formation of heterometallic Zn-Cu paddle-wheel units along with monometallic Cu-Cu and Zn-Zn units in the prepared mixed-metal MOFs were confirmed by continuous-wave EPR spectroscopy. The synthesized materials [Zn1-xCux(bdc)(dabco)0.5] are thermally stable up to 260 °C and exhibit permanent porosity with BET surface areas in the range of 800-2430 m2g-1.
AB - A series of mixed-metal layer-pillared MOFs of general formula [Zn 1-xCux(bdc)(dabco)0.5] (bdc = 1,4-benzenedicarboxylate, dabco = 1,4-diazabicyclo[2.2.2]octane, 0 < x < 1) have been synthesized by a solvothermal approach. Different amounts x of Cu2+ were introduced to substitute for Zn2+ centers. The prepared mixed-metal MOFs were shown to be structurally very similar to their parent monometallic [Zn(bdc)(dabco)0.5] and [Cu(bdc)(dabco) 0.5] frameworks by single-crystal and powder X-ray diffraction studies. Interestingly, upon inclusion of copper, a distortion of the paddle-wheel units is observed. In addition, the incorporation of Cu 2+ ions into the [Zn2(bdc)(dabco)0.5] framework and the formation of heterometallic Zn-Cu paddle-wheel units along with monometallic Cu-Cu and Zn-Zn units in the prepared mixed-metal MOFs were confirmed by continuous-wave EPR spectroscopy. The synthesized materials [Zn1-xCux(bdc)(dabco)0.5] are thermally stable up to 260 °C and exhibit permanent porosity with BET surface areas in the range of 800-2430 m2g-1.
KW - Copper
KW - Metal-organic frameworks
KW - Microporous materials
KW - X-ray diffraction
KW - Zinc
UR - http://www.scopus.com/inward/record.url?scp=84859054051&partnerID=8YFLogxK
U2 - 10.1002/ejic.201101295
DO - 10.1002/ejic.201101295
M3 - Article
AN - SCOPUS:84859054051
SN - 1434-1948
SP - 1688
EP - 1695
JO - European Journal of Inorganic Chemistry
JF - European Journal of Inorganic Chemistry
IS - 10
ER -