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2Â¥2010-06-08 01:08:01
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Þ¹Ò²ݶù(½ð±Ò+1):¸ß·Ö×Ó°æ½±Àø~ 2010-06-08 16:30:56
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Reduction of Residual Toluene Content in beta-Cyclodextrin through Preparing Inclusion Complexes
http://www3.interscience.wiley.c ... ETRY=1&SRETRY=0
3Â¥2010-06-08 14:53:18
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celan

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Þ¹Ò²ݶù(½ð±Ò+1):¸ß·Ö×Ó°æ½±Àø~ 2010-06-08 16:31:10
Cyclodextrins: A new efficient absorbent to treat waste gas streams
http://www.net-lanna.info/environment/Abstract/41016260.pdf
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4Â¥2010-06-08 15:01:57
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celan

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Þ¹Ò²ݶù(½ð±Ò+1):¸ß·Ö×Ó°æ½±Àø~ 2010-06-08 16:31:05
J Chromatogr A. 2009 Jul 3;1216(27):5242-8. Epub 2009 May 15.
Determining the stoichiometry and binding constants of inclusion complexes formed between aromatic compounds and beta-cyclodextrin by solid-phase microextraction coupled to high-performance liquid chromatography.
Chalumot G, Yao C, Pino V, Anderson JL.

Department of Chemistry, The University of Toledo, Toledo, OH 43606, USA.

Abstract
The complexation of native beta-cyclodextrin (CD) and seven aromatic compounds, namely, phenetole, toluene, m-xylene, naphthalene, biphenyl, fluorene and phenanthrene, has been studied for first time utilizing a solid-phase microextraction (SPME)-high-performance liquid chromatography (HPLC) method. The stoichiometries of the analyte:beta-CD complexes were found to be either 1:1 or 1:2. The formation of 1:2 complexes was confirmed for naphthalene, biphenyl, fluorene, and phenanthrene only when utilizing relatively high concentrations of beta-CD (up to 6.6 mM). The 1:2 stoichiometries were confirmed using the classical modified Benesi-Hildebrand (BH) method. The calculated binding constants for 1:1 stoichiometries (K(1)) using the SPME method varied from 115.3M(-1) for toluene to 3510 M(-1) for phenanthrene, whereas the corresponding values to the 1:2 stoichiometries (K(3)) varied from 7.30 x 10(5) M(-2) for biphenyl to 9.03 x 10(6)M(-2) for naphthalene.
5Â¥2010-06-08 15:05:44
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