- Hydrophilic metal-organic polyhedra, preparation method thereof and gas separation membrane comprising the same
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The present invention relates to a hydrophilic metal-organic polyhedron, a production method thereof, and a gas separator including the same. More specifically, by producing the hydrophilic metal-organic polyhedron containing a polyethylene oxide-based organic ligand and mixing the same with a crosslinked polyethylene oxide polymer, the hydrophilic metal-organic polyhedron can be applied as a gas separator which exhibits a high CO_2/N_2 permeation selectivity.COPYRIGHT KIPO 2018
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- Hydrogen-bonded six-component assembly for capsule formation based on tetra(4-pyridyl)cavitand and isophthalic acid linker and its application to photoresponsive capsule
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Two molecules of tetra(4-pyridyl)cavitand 1 and four molecules of isophthalic acid linker 2a with a triethylene glycol monomethyl ether (TEG) group self-assembled into a six-component capsule 12·2a4 through eight pyN?HO2C hydrogen bonds, which encapsulates one molecule of guest G such as bis(4-acetoxyphenyl)acetylene and hexakis(4-iodophenyl)benzene to form G(12·2a4). Guest-encapsulation ability and selectivity of 12·2a4 were revealed. trans-5-(p-Substituted-phenylazo)isophthalic acid with two dichotomous branching TEG groups trans-2b serves as a photoresponsive linker to form 12·(trans-2b)4, which moderately reduced guest-encapsulation ability upon photoisomerization (at the photostationary state, 10% guest release upon subunit-trans-2b/subunit-cis-2b = 18:82).
- Togari, Yuka,Hirota, Shiori,Kitagawa, Hitomi,Tsukamoto, Yoshimi,Kobayashi, Kenji
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supporting information
p. 7626 - 7635
(2018/11/02)
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- The influence of linker geometry in bis(3-hydroxy-N-methyl-pyridin-2-one) ligands on solution phase uranyl affinity
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Seven water-soluble, tetradentate bis(3-hydroxy-N-methyl-pyridin-2-one) (bis-Me-3,2-HOPO) ligands were synthesized that vary only in linker geometry and rigidity. Solution-phase thermodynamic measurements were conducted between pHa 1.6 and pHa 9.0 to dete
- Szigethy, Geza,Raymond, Kenneth N.
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supporting information; experimental part
p. 1818 - 1827
(2011/03/21)
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- Amphiphilic fullerene-cholesterol derivatives: Synthesis and preparation of Langmuir and Langmuir-Blodgett films
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Amphiphilic fullerene bis-adducts 11 and 14 containing two and four cholesterol moieties, respectively, were prepared starting from the corresponding bis-malonate derivatives. In a systematic study, their spreading behavior at the air-water interface was compared to that of bis-adduct 6 with no polar head-group. Compared to 6, for which some three-dimensional aggregation occurs, the polar head-group in 11 and 14 is responsible for an attractive interaction with the aqueous subphase, forcing the molecules towards the water surface into a two-dimensional arrangement. Even if homogeneous Langmuir films were obtained with both 11 and 14, only the films of 14 show a reversible compression/expansion behavior. This suggests that, by increasing the number of cholesterol subunits, the encapsulation of the C-sphere in its addend is more efficient, thus preventing fullerene-fullerene interactions and aggregation phenomena. The Langmuir films of 11 and 14 were also efficiently transferred onto hydrophilic quartz slides, yielding Langmuir-Blodgett films.
- Felder, Delphine,Del Pilar Carreon, Maria,Gallani, Jean-Louis,Guillon, Daniel,Nierengarten, Jean-Francois,Chuard, Thierry,Deschenaux, Robert
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p. 1119 - 1132
(2007/10/03)
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