A long-wave optical pH sensor based on red upconversion luminescence of NaGdF4 nanotubes

Song Wang; Jing Feng; Shuyan Song; Hongjie Zhang

doi:10.1039/C4RA09686J

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A long-wave optical pH sensor based on red upconversion luminescence of NaGdF₄ nanotubes†

Song Wang,^a Jing Feng,*^a Shuyan Song^a and Hongjie Zhang*^a

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* Corresponding authors

^a State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
E-mail: fengj@ciac.ac.cn, hongjie@ciac.ac.cn
Fax: +86-431-85698041
Tel: +86-431-8526-2127

Abstract

A long-wave optical pH sensor based on intense red upconversion (UC) luminescence of NaGdF₄ nanotubes and bromothymol blue was explored. By detecting the UC spectra of NaGdF₄ nanotubes in aqueous solution, the sensing system could work on the pH measurement. The intensities of the red emission were linear with pH value changing from 6 to 8.

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Article information

DOI: https://doi.org/10.1039/C4RA09686J
Article type: Communication
Submitted: 03 Sep 2014
Accepted: 17 Oct 2014
First published: 17 Oct 2014

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RSC Adv., 2014,4, 55897-55899

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A long-wave optical pH sensor based on red upconversion luminescence of NaGdF₄ nanotubes

S. Wang, J. Feng, S. Song and H. Zhang, RSC Adv., 2014, 4, 55897 DOI: 10.1039/C4RA09686J

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