Evaluation of a luminescent ruthenium complex immobilized inside Nafion as optical pH sensor

Chun Man Chan; Chun Sing Fung; Kwok Yin Wong; Wai Hung Lo

doi:10.1039/a802460j

Evaluation of a luminescent ruthenium complex immobilized inside Nafion as optical pH sensor

Chun Man Chan, Chun Sing Fung, Kwok Yin Wong, Wai Hung Lo

Research output: Journal article publication › Journal article › Academic research › peer-review

37 Citations (Scopus)

Abstract

The development of an optical pH sensor based on immobilization of a luminescent ruthenium complex, [Ru(bpy)2(dhphen)]2+(bpy = 2,2@?-bipyridine, dhphen = 4,7-dihydroxy-1,10-phenanthroline) in Nafion film is described. The sensor has a useful pH range of 1-8. The typical response time of the sensing film is 2-5 min. The polyanionic nature of the Nafion film eliminates interference from anions. The sensor also shows minimal interference effects from alkali metal and divalent cations and has good photostability and reproducibility.

Original language	English
Pages (from-to)	1843-1847
Number of pages	5
Journal	Analyst
Volume	123
Issue number	9
DOIs	https://doi.org/10.1039/a802460j
Publication status	Published - 1 Jan 1998

ASJC Scopus subject areas

Analytical Chemistry
Biochemistry
Environmental Chemistry
Spectroscopy
Electrochemistry

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10.1039/a802460j

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abstract = "The development of an optical pH sensor based on immobilization of a luminescent ruthenium complex, [Ru(bpy)2(dhphen)]2+(bpy = 2,2@?-bipyridine, dhphen = 4,7-dihydroxy-1,10-phenanthroline) in Nafion film is described. The sensor has a useful pH range of 1-8. The typical response time of the sensing film is 2-5 min. The polyanionic nature of the Nafion film eliminates interference from anions. The sensor also shows minimal interference effects from alkali metal and divalent cations and has good photostability and reproducibility.",

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Evaluation of a luminescent ruthenium complex immobilized inside Nafion as optical pH sensor

Abstract

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