Matches in SemOpenAlex for { <https://semopenalex.org/work/W2008080764> ?p ?o ?g. }
- W2008080764 endingPage "8465" @default.
- W2008080764 startingPage "8458" @default.
- W2008080764 abstract "The binding behavior of substituted 1,4-bis(pyridinium)butane derivatives (X-Py(CH2)4Py-X, X = H, 2-methyl, 3-methyl, 4-methyl, 2,6-dimethyl, 4-pyridyl, and 4-COOEthyl) 12+–72+, with negatively charged carboxylatopillar[5]arene (CP5A) has been comprehensively investigated by 1H NMR and 2D ROESY and UV absorption and fluorescence spectroscopy in aqueous phosphate buffer solution (pH 7.2). The results indicated that the position of the substituents attached on pyridinium ring dramatically affects the association constants and binding modes. 3- and 4-Substituted guests (12+, 32+, 42+, 62+, 72+) form [2]pseudorotaxane geometries with CP5A host, giving very large association constants (>105 M–1), while 2,6-dimethyl-substituted 52+ forms external complex with relatively small Ka values [(2.4 ± 0.3) × 103 M–1] because the 2,6-dimethylpyridinium unit is too bulky to thread the host cavity. Both of the binding geometries mentioned above are observed for 22+, having one methyl group in the 2-position of pyridinium. Typically, the association constant of [2]pseudorotaxane 12+⊂CP5A exceeds 106 M–1 in water, which is significantly higher than those of previously reported analogues in organic solvents. The remarkably improved complexation of bis(pyridinium) guests by the anionic host was due to electrostatic attraction forces and hydrophobic interactions." @default.
- W2008080764 created "2016-06-24" @default.
- W2008080764 creator A5000483207 @default.
- W2008080764 creator A5012825471 @default.
- W2008080764 creator A5021529363 @default.
- W2008080764 creator A5025154377 @default.
- W2008080764 creator A5029937389 @default.
- W2008080764 creator A5043279140 @default.
- W2008080764 creator A5052883326 @default.
- W2008080764 creator A5082928964 @default.
- W2008080764 creator A5090788140 @default.
- W2008080764 date "2011-09-29" @default.
- W2008080764 modified "2023-10-07" @default.
- W2008080764 title "Complexation of 1,4-Bis(pyridinium)butanes by Negatively Charged Carboxylatopillar[5]arene" @default.
- W2008080764 cites W1965213057 @default.
- W2008080764 cites W1973901957 @default.
- W2008080764 cites W1975769135 @default.
- W2008080764 cites W1977906543 @default.
- W2008080764 cites W1980048463 @default.
- W2008080764 cites W1981382830 @default.
- W2008080764 cites W1982621497 @default.
- W2008080764 cites W1986405298 @default.
- W2008080764 cites W1988350027 @default.
- W2008080764 cites W1991875331 @default.
- W2008080764 cites W1996065275 @default.
- W2008080764 cites W1998209511 @default.
- W2008080764 cites W2000920975 @default.
- W2008080764 cites W2001423947 @default.
- W2008080764 cites W2002138457 @default.
- W2008080764 cites W2002986478 @default.
- W2008080764 cites W2003611446 @default.
- W2008080764 cites W2005319271 @default.
- W2008080764 cites W2006341826 @default.
- W2008080764 cites W2008724119 @default.
- W2008080764 cites W2011313176 @default.
- W2008080764 cites W2012752416 @default.
- W2008080764 cites W2016697892 @default.
- W2008080764 cites W2017212651 @default.
- W2008080764 cites W2017397185 @default.
- W2008080764 cites W2019211173 @default.
- W2008080764 cites W2019800539 @default.
- W2008080764 cites W2030334146 @default.
- W2008080764 cites W2032131270 @default.
- W2008080764 cites W2035179959 @default.
- W2008080764 cites W2043905052 @default.
- W2008080764 cites W2044212067 @default.
- W2008080764 cites W2044630437 @default.
- W2008080764 cites W2045499804 @default.
- W2008080764 cites W2048266861 @default.
- W2008080764 cites W2052978680 @default.
- W2008080764 cites W2059619466 @default.
- W2008080764 cites W2061389694 @default.
- W2008080764 cites W2063066459 @default.
- W2008080764 cites W2064749237 @default.
- W2008080764 cites W2069808505 @default.
- W2008080764 cites W2075617973 @default.
- W2008080764 cites W2077242832 @default.
- W2008080764 cites W2078074519 @default.
- W2008080764 cites W2084667238 @default.
- W2008080764 cites W2087140929 @default.
- W2008080764 cites W2088252867 @default.
- W2008080764 cites W2093454042 @default.
- W2008080764 cites W2094171796 @default.
- W2008080764 cites W2095801262 @default.
- W2008080764 cites W2098234939 @default.
- W2008080764 cites W2108127268 @default.
- W2008080764 cites W2108183103 @default.
- W2008080764 cites W2108344334 @default.
- W2008080764 cites W2110108379 @default.
- W2008080764 cites W2112605849 @default.
- W2008080764 cites W2117508948 @default.
- W2008080764 cites W2119927970 @default.
- W2008080764 cites W2124860710 @default.
- W2008080764 cites W2127349881 @default.
- W2008080764 cites W2127664681 @default.
- W2008080764 cites W2128553174 @default.
- W2008080764 cites W2131002741 @default.
- W2008080764 cites W2135812119 @default.
- W2008080764 cites W2136113507 @default.
- W2008080764 cites W2136648665 @default.
- W2008080764 cites W2137650923 @default.
- W2008080764 cites W2139618107 @default.
- W2008080764 cites W2139902274 @default.
- W2008080764 cites W2147974754 @default.
- W2008080764 cites W2149206943 @default.
- W2008080764 cites W2151401440 @default.
- W2008080764 cites W2151430274 @default.
- W2008080764 cites W2156454494 @default.
- W2008080764 cites W2166292464 @default.
- W2008080764 cites W2170929996 @default.
- W2008080764 cites W2314649643 @default.
- W2008080764 cites W2317397772 @default.
- W2008080764 cites W2328511918 @default.
- W2008080764 cites W2334149474 @default.
- W2008080764 cites W2951753247 @default.
- W2008080764 cites W2953017056 @default.
- W2008080764 cites W4210999115 @default.
- W2008080764 cites W4211043797 @default.