摘要
A non-sulfur chemosensor based on an easy to prepare double naphthalene Schiff base is reported for the colorimetric and fluorometric dual-channel sensing of Hg2+ ions by taking advantage of the twisted intramolecular charge transfer (TICT) mechanism. This work provides a novel approach for the selective recognition of mercury ions. Moreover, this sensor serves as a potential recyclable component in sensing materials and the complex L-Hg2+ (L = 1-[(2-naphthalenylimino)methyl]-2-naphthalenol) can therefore be used as a fluorescent sensor for iodine anions. Notably, the color changes are very significant and all the recognition and recycling processes can be observed by the naked eye.
A non-sulfur chemosensor based on an easy to prepare double naphthalene Schiff base is reported for the colorimetric and flu- orometric dual-channel sensing of Hg2＋ ions by taking advantage of the twisted intramolecular charge transfer （TICT） mecha- nism. This work provides a novel approach for the selective recognition of mercury ions. Moreover, this sensor serves as a po- tential recyclable component in sensing materials and the complex L-Hg2＋ （L = 1-[（2-naphthalenylimino）methyl]-2-naphtha- lenol） can therefore be used as a fluorescent sensor for iodine anions. Notably, the color changes are very significant and all the recognition and recycling processes can be observed by the naked eye.
基金
supported by the National Natural Science Foundation of China (21064006, 21161018)
the Natural Science Foundation of Gansu Province (1010RJZA018)
the Program for Changjiang Scholars and Innovative Research Teams in Universities of the Ministry of Education of China (IRT1177)
