TY - JOUR

T1 - Metal-organic frameworks based on octafluorobiphenyl-4,4′-dicarboxylate

T2 - Synthesis, crystal structure, and surface functionality

AU - Cheplakova, Anastasia M.

AU - Kovalenko, Konstantin A.

AU - Samsonenko, Denis G.

AU - Lazarenko, Vladimir A.

AU - Khrustalev, Victor N.

AU - Vinogradov, Andrey S.

AU - Karpov, Victor M.

AU - Platonov, Vyacheslav E.

AU - Fedin, Vladimir P.

PY - 2018/3/6

Y1 - 2018/3/6

N2 - In contrast to aromatic carboxylates, the coordination polymers based on their perfluorinated analogues are not numerous. Here we present a series of six Zn(ii) coordination polymers of different dimensionalities (1D, 2D, and 3D) and porosities based on octafluorobiphenyl-4,4′-dicarboxylate (oFBPDC2-) and N-containing co-ligands (ur, dabco, and bpy). These complexes are characterized by single-crystal X-ray diffraction, PXRD, FT-IR, elemental analysis, and TGA. The metal-organic frameworks [Zn2(CH3CONH2)2(oFBPDC)2] (1) and [Zn2(oFBPDC)2(dabco)] (4) are shown to be porous with BET surface areas of 470 m2 g-1 and 441 m2 g-1, respectively. In addition, compound 4 shows selectivity factors of 11.3, 4.9 and more than 6 for the binary gas mixtures CO2/N2, CO2/CH4 and benzene/cyclohexane, respectively. The measurements for pressed powders and water droplet give water contact angles of 136° for 4 and 133° for (H2bpy)[Zn2(bpy)(oFBPDC)3] (5). Low water uptake indicates that both 4 and 5 belong to highly hydrophobic solids.

AB - In contrast to aromatic carboxylates, the coordination polymers based on their perfluorinated analogues are not numerous. Here we present a series of six Zn(ii) coordination polymers of different dimensionalities (1D, 2D, and 3D) and porosities based on octafluorobiphenyl-4,4′-dicarboxylate (oFBPDC2-) and N-containing co-ligands (ur, dabco, and bpy). These complexes are characterized by single-crystal X-ray diffraction, PXRD, FT-IR, elemental analysis, and TGA. The metal-organic frameworks [Zn2(CH3CONH2)2(oFBPDC)2] (1) and [Zn2(oFBPDC)2(dabco)] (4) are shown to be porous with BET surface areas of 470 m2 g-1 and 441 m2 g-1, respectively. In addition, compound 4 shows selectivity factors of 11.3, 4.9 and more than 6 for the binary gas mixtures CO2/N2, CO2/CH4 and benzene/cyclohexane, respectively. The measurements for pressed powders and water droplet give water contact angles of 136° for 4 and 133° for (H2bpy)[Zn2(bpy)(oFBPDC)3] (5). Low water uptake indicates that both 4 and 5 belong to highly hydrophobic solids.

KW - TETRAFLUOROTEREPHTHALIC ACID

KW - PHOTOLUMINESCENT COMPOUNDS

KW - COORDINATION POLYMER

KW - ADSORPTION

KW - CO2

KW - SORPTION

KW - HYDROPHOBICITY

KW - LUMINESCENCE

KW - SEPARATIONS

KW - STABILITY

UR - http://www.scopus.com/inward/record.url?scp=85043323299&partnerID=8YFLogxK

U2 - 10.1039/c7dt04566b

DO - 10.1039/c7dt04566b

M3 - Article

C2 - 29363694

AN - SCOPUS:85043323299

VL - 47

SP - 3283

EP - 3297

JO - Dalton Transactions

JF - Dalton Transactions

SN - 1477-9226

IS - 10

ER -