Issue 3, 2006
From the journal:

Analyst

A wide pH range optical sensing system based on a sol–gel encapsulated amino-functionalised corrole

Chun-Yan Li,a   Xiao-Bing Zhang,*a   Zhi-Xiang Han,a   Björn Åkermark,b   Licheng Sun,*c   Guo-Li Shena  and  Ru-Qin Yua  

* Corresponding authors

a State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry & Chemical Engineering, Hunan University, Changsha, P. R. China
E-mail: xbzhang@hnu.cn

b Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, 10691 Stockholm, Sweden

c KTH Chemistry, Organic Chemistry, Royal Institute of Technology, 10044 Stockholm, Sweden
E-mail: lichengs@kth.se

Abstract

The synthesis of a new compound, 10-(4-aminophenyl)-5,15-dimesitylcorrole, and its application for the preparation of optical chemical pH sensors is described. The dye materials were immobilized in a sol–gel glass matrix and characterised upon exposure to aqueous buffer solutions. The response of the sensor is based on the fluorescence intensity changing of corrole owing to multiple steps of protonation and deprotonation. Due to its containing several proton sensitive centers, the 10-(4-aminophenyl)-5,15-dimesitylcorrole based optode shows a wider response range toward pH than that of tetraphenylporphyrin (TPPH2) and 5,10,15-tris(pentafluorophenyl)corrole (H3(tpfc)). It shows a linear pH response in the range of 2.17–10.30. The effect of the composition of the sensor membrane has been studied and the experimental conditions were optimized. The optode showed good reproducibility and reversibility, and common co-existing inorganic ions did not show obvious interference to its pH measurement.

Graphical abstract: A wide pH range optical sensing system based on a sol–gel encapsulated amino-functionalised corrole

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Article information

DOI
https://doi.org/10.1039/B514510D
Article type
Paper
Submitted
12 Oct 2005
Accepted
09 Dec 2005
First published
05 Jan 2006

Analyst, 2006,131, 388-393

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A wide pH range optical sensing system based on a sol–gel encapsulated amino-functionalised corrole

C. Li, X. Zhang, Z. Han, B. Åkermark, L. Sun, G. Shen and R. Yu, Analyst, 2006, 131, 388 DOI: 10.1039/B514510D

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