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Citation: DU Xin-zhen, SUN Yan-chun, ZHOU Rong, WANG Ya-rong, TAO Xiao-juan. Dual Inclusional Modes of β-cyclodextrin with Polyoxyethylene Lauryl Ether[J]. Acta Physico-Chimica Sinica, ;2005, 21(10): 1174-1177. doi: 10.3866/PKU.WHXB20051023 shu

Dual Inclusional Modes of β-cyclodextrin with Polyoxyethylene Lauryl Ether

1.
Department of Chemistry, Northwest Normal University, Lanzhou 730070

Received Date: 24 February 2005
Available Online: 15 October 2005

Inclusion of β-cyclodextrin (β-CD) with polyoxyethylene lauryl ether (PL) was studied by surface tension, cloud point, color reaction and ¹H NMR measurements. It was established that the inclusion of β-CD with PL affords supramolecular complexes with stoichiometric ratios of 2∶1 and 3∶1 in aqueous solution. Inclusion complex with the stoichiometry of 2∶1 arises from the incorporation of lauryl group of PL into the cavity of β-CD, whereas inclusion complex with the stoichiometry of 3∶1 arises from the incorporation of polyoxyethylene group of PL into the cavity of β-CD. A special configuration of the complex has been proposed based on experimental results and molecular sizes.
- β-Cyclodextrin;PL;Surface tension;Cloud point;1H NMR; Supramolecular inclusion complex
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