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Structure dependent thermo-reversible dissolution of organic molecules based on β-cyclodextrin complexes and its application in preparetive-scale separation of xylene isomers

Varieties of small organic molecules can be precipitated in DMF by β-CD in the form of inclusion complex at different temperatures by a molecular recognition thermo-reversible process. The finding was successfully applied for the separation of xylene isomer mixtures in a preparation-scale in DMF sol... Full description

Journal Title: Colloids and Surfaces A: Physicochemical and Engineering Aspects 20 November 2012, Vol.414, pp.120-124
Main Author: Du, Guang Yan
Other Authors: Shen, Jian , Sun, Tao , Sun, Hong Yuan , Shi, Chen Cong , Hao, Ai You
Format: Electronic Article Electronic Article
Language: English
Subjects:
Quelle: ScienceDirect Journals (Elsevier)
ID: ISSN: 0927-7757 ; E-ISSN: 1873-4359 ; DOI: 10.1016/j.colsurfa.2012.08.014
Link: https://www.sciencedirect.com/science/article/pii/S0927775712005456
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recordid: elsevier_sdoi_10_1016_j_colsurfa_2012_08_014
title: Structure dependent thermo-reversible dissolution of organic molecules based on β-cyclodextrin complexes and its application in preparetive-scale separation of xylene isomers
format: Article
creator:
  • Du, Guang Yan
  • Shen, Jian
  • Sun, Tao
  • Sun, Hong Yuan
  • Shi, Chen Cong
  • Hao, Ai You
subjects:
  • Thermo-Reversible Dissolution
  • Supramolecular Recognition
  • Β-Cyclodextrin Complex
  • Preparative-Scale Separation
  • Xylene Isomer
  • Engineering
  • Chemistry
ispartof: Colloids and Surfaces A: Physicochemical and Engineering Aspects, 20 November 2012, Vol.414, pp.120-124
description: Varieties of small organic molecules can be precipitated in DMF by β-CD in the form of inclusion complex at different temperatures by a molecular recognition thermo-reversible process. The finding was successfully applied for the separation of xylene isomer mixtures in a preparation-scale in DMF solution. ► An unusual structure dependent thermo-reversible precipitation–dissolution behavior was reported. ► Varieties of small organic molecules could be precipitated/dissolved in the presence of β-CD by heating/cooling in DMF. ► They can form organic molecules–β-CD complex by heating. ► Different organic molecule–β-CD complex precipitates corresponded to different temperature. ► This behavior was successfully applied for the separation of xylene isomer mixtures in DMF solution. This paper describes an interesting structure dependent thermo-reversible dissolution of organic molecules in the presence of β-cyclodextrin (β-CD) in N, N-dimethyllformamide (DMF). β-CD could influence the solubility of dissolved organic molecules, resulting in the precipitation of organic molecule–β-CD complex from the original transparent solution as the temperature is increasing, while the precipitate will be dissolved again upon cooling. Different organic molecule–β-CD complex precipitates corresponded to different turbid temperatures ( ). No precipitates were observed solely for either organic molecules or β-CD in DMF when the temperature increased, indicating the structure dependent recognition of β-CD to organic molecules. This molecular recognition behavior had been successfully applied in the separation of xylene isomers in preparative scale.
language: eng
source: ScienceDirect Journals (Elsevier)
identifier: ISSN: 0927-7757 ; E-ISSN: 1873-4359 ; DOI: 10.1016/j.colsurfa.2012.08.014
fulltext: fulltext
issn:
  • 0927-7757
  • 09277757
  • 1873-4359
  • 18734359
url: Link


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titleStructure dependent thermo-reversible dissolution of organic molecules based on β-cyclodextrin complexes and its application in preparetive-scale separation of xylene isomers
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subjectThermo-Reversible Dissolution ; Supramolecular Recognition ; Β-Cyclodextrin Complex ; Preparative-Scale Separation ; Xylene Isomer ; Engineering ; Chemistry
descriptionVarieties of small organic molecules can be precipitated in DMF by β-CD in the form of inclusion complex at different temperatures by a molecular recognition thermo-reversible process. The finding was successfully applied for the separation of xylene isomer mixtures in a preparation-scale in DMF solution. ► An unusual structure dependent thermo-reversible precipitation–dissolution behavior was reported. ► Varieties of small organic molecules could be precipitated/dissolved in the presence of β-CD by heating/cooling in DMF. ► They can form organic molecules–β-CD complex by heating. ► Different organic molecule–β-CD complex precipitates corresponded to different temperature. ► This behavior was successfully applied for the separation of xylene isomer mixtures in DMF solution. This paper describes an interesting structure dependent thermo-reversible dissolution of organic molecules in the presence of β-cyclodextrin (β-CD) in N, N-dimethyllformamide (DMF). β-CD could influence the solubility of dissolved organic molecules, resulting in the precipitation of organic molecule–β-CD complex from the original transparent solution as the temperature is increasing, while the precipitate will be dissolved again upon cooling. Different organic molecule–β-CD complex precipitates corresponded to different turbid temperatures ( ). No precipitates were observed solely for either organic molecules or β-CD in DMF when the temperature increased, indicating the structure dependent recognition of β-CD to organic molecules. This molecular recognition behavior had been successfully applied in the separation of xylene isomers in preparative scale.
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