Fiber-optic singlet oxygen [1O2 (1Δ g)] generator device serving as a point selective sterilizer

David Aebisher; Matibur Zamadar; Adaickapillai Mahendran; Goutam Ghosh; Catherine McEntee; Alexander Greer

doi:10.1111/j.1751-1097.2010.00748.x

Fiber-optic singlet oxygen [¹O₂ (¹Δ _g)] generator device serving as a point selective sterilizer

David Aebisher, Matibur Zamadar, Adaickapillai Mahendran, Goutam Ghosh, Catherine McEntee, Alexander Greer

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

Abstract

A novel hollow-core fiber-optic device has been created to improve traditional Type II heterogeneous photo-oxidations, which usually require external light and oxygen sources. This device incorporates an internal supply of light and flowing oxygen with a porous photosensitizer-end capped configuration to produce singlet oxygen, delivered through the fiber tip. It achieved a steady-state singlet oxygen concentration of around 20 fm near the probe tip. Being portable and maneuverable, this device facilitated simple disinfection studies, achieving complete inactivation of Escherichia coli within 2 hours in small aqueous samples. However, after about 12 hours of use, the probe tip experienced photobleaching, necessitating baking and sensitizer reloading for reuse.

Original language	English
Pages (from-to)	890-894
Number of pages	5
Journal	Photochemistry and Photobiology
Volume	86
Issue number	4
DOIs	https://doi.org/10.1111/j.1751-1097.2010.00748.x
State	Published - Jul 2010
Externally published	Yes

ASJC Scopus Subject Areas

Biochemistry
Physical and Theoretical Chemistry

Access to Document

10.1111/j.1751-1097.2010.00748.x

Cite this

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title = "Fiber-optic singlet oxygen [1O2 (1Δ g)] generator device serving as a point selective sterilizer",

abstract = "A novel hollow-core fiber-optic device has been created to improve traditional Type II heterogeneous photo-oxidations, which usually require external light and oxygen sources. This device incorporates an internal supply of light and flowing oxygen with a porous photosensitizer-end capped configuration to produce singlet oxygen, delivered through the fiber tip. It achieved a steady-state singlet oxygen concentration of around 20 fm near the probe tip. Being portable and maneuverable, this device facilitated simple disinfection studies, achieving complete inactivation of Escherichia coli within 2 hours in small aqueous samples. However, after about 12 hours of use, the probe tip experienced photobleaching, necessitating baking and sensitizer reloading for reuse.",

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AU - Aebisher, David

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AU - Ghosh, Goutam

AU - McEntee, Catherine

AU - Greer, Alexander

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