Home
Resources
Publications
An Ionophore-Based Anion-Selective Optode Printed on Cellulose Paper

An Ionophore-Based Anion-Selective Optode Printed on Cellulose Paper

Xuewei Wang, Qi Zhang, Changwoo Nam, Michael Hickner, Mollie Mahoney, Mark E Meyerhoff

Angew Chem Int Ed Engl. 2017 Sep 18;56(39):11826-11830.

PMID: 28715617

Abstract:

A general anion-sensing platform is reported based on a portable and cost-effective ion-selective optode and a smartphone detector equipped with a color analysis app. In contrast to traditional anion-selective optodes using a hydrophobic polymer and/or plasticizer to dissolve hydrophobic sensing elements, the new optode relies on hydrophilic cellulose paper. The anion ionophore and a lipophilic pH indicator are inkjet-printed and adsorbed on paper and form a "dry" hydrophobic sensing layer. Porous cellulose sheets also allow the sensing site to be modified with dried buffer that prevents any sample pH dependence of the observed color change. A highly selective fluoride optode using an AlIII -porphyrin ionophore is examined as an initial example of this new anion sensing platform for measurements of fluoride levels in drinking water samples. Apart from Lewis acid-base recognition, hydrogen bonding recognition is also compatible with this sensing platform.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP4088226-A	Hydrogen ionophore III		4088-22-6	Price

As a specialist in analytical chemical Products, Alfa Chemistry offers consumers a wealth of raw materials and a full range of technologies and services.

QUICK LINKS

HEADQUARTERS

Tel:

Fax:

Email: