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Title: Water Flux Induced Reorientation of Liquid Crystals

Abstract

It is well understood that the adsorption of solutes at the interface between a bulk liquid crystal phase and an aqueous phase can lead to orientational or anchoring transitions. A different principle is introduced here, whereby a transient reorientation of a thermotropic liquid crystal is triggered by a spontaneous flux of water across the interface. A critical water flux can be generated by the addition of an electrolyte to the bulk aqueous phase, leading to a change in the solvent activity; water is then transported through the liquid crystal phase and across the interface. The magnitude of the spontaneous water flux can be controlled by the concentration and type of solutes, as well as the rate of salt addition. These results present new, previously unappreciated fundamental principles that could potentially be used for the design of materials involving transient gating mechanisms, including biological sensors, drug delivery systems, separation media, and molecular machines.

Authors:
 [1];  [1];  [1];  [1];  [1]; ORCiD logo [2]; ORCiD logo [2]
  1. Univ. of Chicago, IL (United States)
  2. Univ. of Chicago, IL (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Research Org.:
Univ. of Chicago, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE
OSTI Identifier:
1413573
Alternate Identifier(s):
OSTI ID: 1508295
Grant/Contract Number:  
SC0004025
Resource Type:
Published Article
Journal Name:
ACS Central Science
Additional Journal Information:
Journal Volume: 3; Journal Issue: 12; Journal ID: ISSN 2374-7943
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Ramezani-Dakhel, Hadi, Sadati, Monirosadat, Zhang, Rui, Rahimi, Mohammad, Kurtenbach, Khia, Roux, Benoît, and de Pablo, Juan J. Water Flux Induced Reorientation of Liquid Crystals. United States: N. p., 2017. Web. doi:10.1021/acscentsci.7b00495.
Ramezani-Dakhel, Hadi, Sadati, Monirosadat, Zhang, Rui, Rahimi, Mohammad, Kurtenbach, Khia, Roux, Benoît, & de Pablo, Juan J. Water Flux Induced Reorientation of Liquid Crystals. United States. doi:10.1021/acscentsci.7b00495.
Ramezani-Dakhel, Hadi, Sadati, Monirosadat, Zhang, Rui, Rahimi, Mohammad, Kurtenbach, Khia, Roux, Benoît, and de Pablo, Juan J. Fri . "Water Flux Induced Reorientation of Liquid Crystals". United States. doi:10.1021/acscentsci.7b00495.
@article{osti_1413573,
title = {Water Flux Induced Reorientation of Liquid Crystals},
author = {Ramezani-Dakhel, Hadi and Sadati, Monirosadat and Zhang, Rui and Rahimi, Mohammad and Kurtenbach, Khia and Roux, Benoît and de Pablo, Juan J.},
abstractNote = {It is well understood that the adsorption of solutes at the interface between a bulk liquid crystal phase and an aqueous phase can lead to orientational or anchoring transitions. A different principle is introduced here, whereby a transient reorientation of a thermotropic liquid crystal is triggered by a spontaneous flux of water across the interface. A critical water flux can be generated by the addition of an electrolyte to the bulk aqueous phase, leading to a change in the solvent activity; water is then transported through the liquid crystal phase and across the interface. The magnitude of the spontaneous water flux can be controlled by the concentration and type of solutes, as well as the rate of salt addition. These results present new, previously unappreciated fundamental principles that could potentially be used for the design of materials involving transient gating mechanisms, including biological sensors, drug delivery systems, separation media, and molecular machines.},
doi = {10.1021/acscentsci.7b00495},
journal = {ACS Central Science},
number = 12,
volume = 3,
place = {United States},
year = {2017},
month = {12}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1021/acscentsci.7b00495

Citation Metrics:
Cited by: 2 works
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