Evidence of Higher Complexes Between Cucurbit[7]uril and Cationic Surfactants

被引：16

作者：

Pessego, M. ^{[1
]}

Moreira, J. A. ^{[2
]}

Garcia-Rio, L. ^{[1
]}

机构：

[1] Univ Santiago, Dept Quim Fis, Ctr Singular Invest Quim Biol & Mat Mol CIQUS, Santiago 15782, Spain

[2] Univ Algarve, CIQA, Dept Quim & Farm, Fac Ciencias & Tecnol, P-8005139 Faro, Portugal

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2012年 / 18卷 / 25期

关键词：

inclusion compounds; kinetics; NMR spectroscopy; supramolecular chemistry; surfactants; HOST-GUEST COMPLEXES; CUCURBITURIL HOMOLOGS; LIGAND-BINDING; DIFFUSION; FLUORESCENCE;

D O I：

10.1002/chem.201103049

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The hostguest assembly of CB7 with a series of alkyl(trimethyl)ammonium (CnTA+) surfactants of different chain lengths (n=618) has been studied. The complexation behaviour was investigated by NMR spectroscopy, isothermal titration calorimetry and kinetics measurements. The combined results of these techniques provided evidence for the formation of 1:1 inclusion and 2:1 external complexes in the cases of CnTA+ with n=1218. The binding constants for the 1:1 complexes are independent of the alkyl chain length of the surfactant, whereas a relationship between K2:1 and the chain length of the surfactant was found for the 2:1 complexes.

引用

页码：7931 / 7940

页数：10

共 37 条

[1] [Anonymous], 1999, Angew. Chem.
[2] [Anonymous], 2005, ANGEW CHEM, DOI DOI 10.1002/ANIE.201210267
[3] Self-diffusion NMR studies of the host-guest interaction between β-cyclodextrin and alkyltrimethylammonium bromide surfactants
Cabaleiro-Lago, C
Nilsson, M
Söderman, O
[J]. LANGMUIR, 2005, 21 (25) : 11637 - 11644
[4] Photophysical Studies on the Noncovalent Interaction of Thioflavin T with Cucurbit[n]uril Macrocycles
Choudhury, Sharmistha Dutta
Mohanty, Jyotirmayee
Upadhyaya, Hari P.
Bhasikuttan, Achikanath C.
Pal, Haridas
[J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2009, 113 (07) : 1891 - 1898
[5] Connors K.A., 1987, BINDING CONSTANTS, V1st, P189
[6] Gerasko O.A., 2002, Russ. Chem. Rev, V71, P741, DOI DOI 10.1070/RC2002v071n09ABEH000748
[7] Cucurbit[n]urils: from mechanism to structure and function
Isaacs, Lyle
[J]. CHEMICAL COMMUNICATIONS, 2009, (06) : 619 - 629
[8] Inclusion of methylviologen in cucurbit[7]uril
Kim, HJ
Jeon, WS
Ko, YH
Kim, K
[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2002, 99 (08) : 5007 - 5011
[9] New cucurbituril homologues:: Syntheses, isolation, characterization, and X-ray crystal structures of cucurbit[n]uril (n=5, 7, and 8)
Kim, J
Jung, IS
Kim, SY
Lee, E
Kang, JK
Sakamoto, S
Yamaguchi, K
Kim, K
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2000, 122 (03) : 540 - 541
[10] Mechanically interlocked molecules incorporating cucurbituril and their supramolecular assemblies
Kim, K
[J]. CHEMICAL SOCIETY REVIEWS, 2002, 31 (02) : 96 - 107

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