Fluorinated xerogel-derived microelectrodes for amperometric nitric oxide sensing.

Analytical Chemistry
Jae Ho ShinMark H Schoenfisch

Abstract

An amperometric fluorinated xerogel-derived nitric oxide (NO) microelectrode is described. A range of fluorine-modified xerogel polymers were synthesized via the cohydrolysis and condensation of alkylalkoxy- and fluoroalkoxysilanes. Such polymers were evaluated as NO sensor membranes to identify the optimum composition for maximizing NO permeability while providing sufficient selectivity for NO in the presence of common interfering species. By taking advantage of both the versatility of sol-gel chemistry and the "poly(tetrafluoroethylene)-like" high NO permselective properties of the xerogels, the performance of the fluorinated xerogel-derived sensors was excellent, surpassing all miniaturized NO sensors reported to date. In contrast to previous electrochemical NO sensor designs, xerogel-based NO microsensors were fabricated using a simple, reliable dip-coating procedure. An optimal permselective membrane was achieved by synthesizing xerogels of methyltrimethoxysilane (MTMOS) and 20% (heptadecafluoro-1,1,2,2-tetrahydrodecyl)trimethoxysilane (17FTMS, balance MTMOS) under acid-catalyzed conditions. The resulting NO microelectrode had a conical tip of approximately 20 microm in diameter and approximately 55 microm in length and ex...Continue Reading

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Citations

May 19, 2010·Analytical Chemistry·Benjamin J PrivettMark H Schoenfisch
Dec 29, 2011·Analytical Chemistry·Daniel A RiccioMark H Schoenfisch
Jan 5, 2013·Analytical Chemistry·Rebecca A HunterMark H Schoenfisch
May 27, 2010·Chemical Society Reviews·Benjamin J PrivettMark H Schoenfisch
Mar 1, 2012·Chemical Society Reviews·Peter N Coneski, Mark H Schoenfisch
Jul 20, 2010·Annual Review of Analytical Chemistry·Evan M Hetrick, Mark H Schoenfisch
Jan 15, 2015·Biosensors·Carlota SaldanhaAna Santos Silva-Herdade
Mar 15, 2012·Analytical and Bioanalytical Chemistry·Dulan B GunasekaraJosé Alberto Fracassi da Silva
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Jan 1, 2015·Analytical Methods : Advancing Methods and Applications·Amber M Pentecost, R Scott Martin
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Feb 19, 2021·Biosensors & Bioelectronics·Shuang ZhaoGuixue Wang
Apr 20, 2021·ACS Sensors·Bethany AlmeidaJames B Delehanty
May 23, 2013·Analytical Chemistry·Rebecca A HunterMark H Schoenfisch
Sep 5, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Meryem BouchouchaMarc-André Fortin
Dec 23, 2016·ACS Sensors·Micah D Brown, Mark H Schoenfisch
Feb 26, 2015·Analytical Chemistry·Rebecca A Hunter, Mark H Schoenfisch
Jun 28, 2019·ACS Sensors·Micah D Brown, Mark H Schoenfisch
Sep 26, 2019·Chemical Reviews·Micah D Brown, Mark H Schoenfisch
Jan 21, 2017·Analytical Chemistry·Tongfang XiaoLanqun Mao

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