Lifetime-based fiber-optic water sensor using a luminescent complex in a lithium-treated Nafion™ membrane

Susan J. Glenn; Brian M. Cullum; Rajesh B. Nair; Delana A. Nivens; Catherine J. Murphy; S. Michael Angel

doi:10.1016/S0003-2670(01)01295-8

Lifetime-based fiber-optic water sensor using a luminescent complex in a lithium-treated Nafion™ membrane

Susan J. Glenn, Brian M. Cullum, Rajesh B. Nair, Delana A. Nivens, Catherine J. Murphy, S. Michael Angel

Research output: Contribution to journal › Article › peer-review

Abstract

A lifetime-based fiber-optic sensor that can be used to measure water content in organic solvents and relative humidity of air is described. The sensor is based on the luminescence lifetime quenching of ruthenium(II)bisphenanthrolinedipyridophenazine (Rudppz) immobilized in a Nafion™ membrane that is mechanically attached to the distal tip of an optical fiber. Treatment of the Nafion™ membrane with lithium hydroxide prior to doping with Rudppz provides a stable sensor response with intense, long-lived luminescence. The response of the sensor to relative humidity was characterized using dry air, room air, and water saturated air. The sensor is useful for measuring the water content of organic solvents below 4% (v/v) and the detection limit is determined to be 0.06, 0.07, and 0.006% (v/v) in DMSO, ethanol, and acetonitrile, respectively. It is being developed for the purpose of measuring water concentration gradients across Nafion™ membranes.

Original language	English (US)
Pages (from-to)	1-8
Number of pages	8
Journal	Analytica Chimica Acta
Volume	448
Issue number	1-2
DOIs	https://doi.org/10.1016/S0003-2670(01)01295-8
State	Published - Dec 3 2001
Externally published	Yes

Keywords

Lithium treatment
Luminescence lifetime
Moisture
Nafion™
Optical fiber sensor
Relative humidity
Water content

ASJC Scopus subject areas

Biochemistry
Analytical Chemistry
Spectroscopy
Environmental Chemistry

Online availability

10.1016/S0003-2670(01)01295-8

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title = "Lifetime-based fiber-optic water sensor using a luminescent complex in a lithium-treated Nafion{\texttrademark} membrane",

abstract = "A lifetime-based fiber-optic sensor that can be used to measure water content in organic solvents and relative humidity of air is described. The sensor is based on the luminescence lifetime quenching of ruthenium(II)bisphenanthrolinedipyridophenazine (Rudppz) immobilized in a Nafion{\texttrademark} membrane that is mechanically attached to the distal tip of an optical fiber. Treatment of the Nafion{\texttrademark} membrane with lithium hydroxide prior to doping with Rudppz provides a stable sensor response with intense, long-lived luminescence. The response of the sensor to relative humidity was characterized using dry air, room air, and water saturated air. The sensor is useful for measuring the water content of organic solvents below 4% (v/v) and the detection limit is determined to be 0.06, 0.07, and 0.006% (v/v) in DMSO, ethanol, and acetonitrile, respectively. It is being developed for the purpose of measuring water concentration gradients across Nafion{\texttrademark} membranes.",

keywords = "Lithium treatment, Luminescence lifetime, Moisture, Nafion{\texttrademark}, Optical fiber sensor, Relative humidity, Water content",

author = "Glenn, {Susan J.} and Cullum, {Brian M.} and Nair, {Rajesh B.} and Nivens, {Delana A.} and Murphy, {Catherine J.} and Angel, {S. Michael}",

note = "Funding Information: The authors gratefully acknowledge financial assistance from DOE/EPSCoR Cooperative Agreement number DE-FC02-91ER75666 amendment number A004 as well as NSF EPSCoR Cooperative Agreement number EPS-9630167. We would also like to thank Janet Regal for her assistance in data collection and processing. ",

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AU - Cullum, Brian M.

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AU - Nivens, Delana A.

AU - Murphy, Catherine J.

AU - Angel, S. Michael

N1 - Funding Information: The authors gratefully acknowledge financial assistance from DOE/EPSCoR Cooperative Agreement number DE-FC02-91ER75666 amendment number A004 as well as NSF EPSCoR Cooperative Agreement number EPS-9630167. We would also like to thank Janet Regal for her assistance in data collection and processing.

PY - 2001/12/3

Y1 - 2001/12/3

N2 - A lifetime-based fiber-optic sensor that can be used to measure water content in organic solvents and relative humidity of air is described. The sensor is based on the luminescence lifetime quenching of ruthenium(II)bisphenanthrolinedipyridophenazine (Rudppz) immobilized in a Nafion™ membrane that is mechanically attached to the distal tip of an optical fiber. Treatment of the Nafion™ membrane with lithium hydroxide prior to doping with Rudppz provides a stable sensor response with intense, long-lived luminescence. The response of the sensor to relative humidity was characterized using dry air, room air, and water saturated air. The sensor is useful for measuring the water content of organic solvents below 4% (v/v) and the detection limit is determined to be 0.06, 0.07, and 0.006% (v/v) in DMSO, ethanol, and acetonitrile, respectively. It is being developed for the purpose of measuring water concentration gradients across Nafion™ membranes.

AB - A lifetime-based fiber-optic sensor that can be used to measure water content in organic solvents and relative humidity of air is described. The sensor is based on the luminescence lifetime quenching of ruthenium(II)bisphenanthrolinedipyridophenazine (Rudppz) immobilized in a Nafion™ membrane that is mechanically attached to the distal tip of an optical fiber. Treatment of the Nafion™ membrane with lithium hydroxide prior to doping with Rudppz provides a stable sensor response with intense, long-lived luminescence. The response of the sensor to relative humidity was characterized using dry air, room air, and water saturated air. The sensor is useful for measuring the water content of organic solvents below 4% (v/v) and the detection limit is determined to be 0.06, 0.07, and 0.006% (v/v) in DMSO, ethanol, and acetonitrile, respectively. It is being developed for the purpose of measuring water concentration gradients across Nafion™ membranes.

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KW - Optical fiber sensor

KW - Relative humidity

KW - Water content

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Lifetime-based fiber-optic water sensor using a luminescent complex in a lithium-treated Nafion™ membrane

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