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Title: Chemoresponsive Nanofluidic Pump That Turns Off in the Presence of Lead Ion

Abstract

There are many applications that require the integration of a pump and a chemical sensor so that the solution being pumped can be analyzed in real time for a specific chemical species and the flow adjusted according to the measured concentration of that species. In this paper, we describe an alternative strategy: a chemoresponsive pump where a single device acts as both the sensor and pump simultaneously. We demonstrate this concept with a nanofluidic Pb 2+-responsive pump that uses electroosmotic flow as the pumping technology, and a Pb 2+-binding ionophore that allows the device to selectively respond to Pb 2+. The pump yields high flow rates at low Pb 2+ concentrations (<1 μM), but flow rate decreases with concentrations above this threshold and ultimately goes to zero at concentrations above 100 μM.

Authors:
 [1];  [1];  [1]; ORCiD logo [1]
  1. Univ. of Florida, Gainesville, FL (United States). Dept. of Chemistry
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC), Washington, DC (United States). Nanostructures for Electrical Energy Storage (NEES)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1470663
Grant/Contract Number:  
[SC0001160]
Resource Type:
Accepted Manuscript
Journal Name:
Analytical Chemistry
Additional Journal Information:
[ Journal Volume: 90; Journal Issue: 12; Related Information: NEES partners with University of Maryland (lead); University of California, Irvine; University of Florida; Los Alamos National Laboratory; Sandia National Laboratories; Yale University]; Journal ID: ISSN 0003-2700
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; bio-inspired; energy storage (including batteries and capacitors); defects; charge transport; synthesis (novel materials); synthesis (self-assembly); synthesis (scalable processing)

Citation Formats

Wu, Xiaojian, Experton, Juliette, Xu, Weihuang, and Martin, Charles R. Chemoresponsive Nanofluidic Pump That Turns Off in the Presence of Lead Ion. United States: N. p., 2018. Web. doi:10.1021/acs.analchem.8b01623.
Wu, Xiaojian, Experton, Juliette, Xu, Weihuang, & Martin, Charles R. Chemoresponsive Nanofluidic Pump That Turns Off in the Presence of Lead Ion. United States. doi:10.1021/acs.analchem.8b01623.
Wu, Xiaojian, Experton, Juliette, Xu, Weihuang, and Martin, Charles R. Thu . "Chemoresponsive Nanofluidic Pump That Turns Off in the Presence of Lead Ion". United States. doi:10.1021/acs.analchem.8b01623. https://www.osti.gov/servlets/purl/1470663.
@article{osti_1470663,
title = {Chemoresponsive Nanofluidic Pump That Turns Off in the Presence of Lead Ion},
author = {Wu, Xiaojian and Experton, Juliette and Xu, Weihuang and Martin, Charles R.},
abstractNote = {There are many applications that require the integration of a pump and a chemical sensor so that the solution being pumped can be analyzed in real time for a specific chemical species and the flow adjusted according to the measured concentration of that species. In this paper, we describe an alternative strategy: a chemoresponsive pump where a single device acts as both the sensor and pump simultaneously. We demonstrate this concept with a nanofluidic Pb2+-responsive pump that uses electroosmotic flow as the pumping technology, and a Pb2+-binding ionophore that allows the device to selectively respond to Pb2+. The pump yields high flow rates at low Pb2+ concentrations (<1 μM), but flow rate decreases with concentrations above this threshold and ultimately goes to zero at concentrations above 100 μM.},
doi = {10.1021/acs.analchem.8b01623},
journal = {Analytical Chemistry},
number = [12],
volume = [90],
place = {United States},
year = {2018},
month = {5}
}

Journal Article:
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