| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1304901 | Inorganic Chemistry Communications | 2007 | 4 Pages |
As a colorimetric anion sensor, the non-covalent charge-transfer complex, formed by di(hydroxymethyl)-di-(2-pyrrolyl) methane 1 and TCNQ 2, may be used for higher sensitive and selective detection of SO32- than other inorganic anions in a neutral buffered aqueous system. The excellent system properties is hopeful to be used in the monitoring fields of food products and environmental pollutant.
Graphical abstractThe colorimetric sensor based on the charge-transfer complex showed high sensitivity for SO32- in a neutral buffered water/organic solvent system. The experiments confirmed that the color change of the dipyrromethane-TCNQ complex solution in the presence of SO32- is ascribed to the competitive binding of SO32- to TCNQ subunit and is proved to be a reversible procedure.Figure optionsDownload full-size imageDownload as PowerPoint slide
