کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1232839 | 1495245 | 2014 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: A rhodamine derivative as selective fluorescent and colorimetric chemosensor for mercury (II) in buffer solution, test strips and living cells A rhodamine derivative as selective fluorescent and colorimetric chemosensor for mercury (II) in buffer solution, test strips and living cells](/preview/png/1232839.png)
• We synthesized a rhodamine derivative as selective fluorescent probe for Hg2+.
• The crystal structure of probe 1 was obtained.
• Probe 1 displayed colorimetric and fluorescent dual-responses toward Hg2+.
• Probe 1 was successfully used for detection of Hg2+ in paper strips and living cells.
In this paper, we reported a new rhodamine derivative bearing 2,4-dichloroquinazoline as a selective fluorescent chemosensor for Hg2+. The ring-opening process of spirolactam enabled the large fluorescent enhancement and colorimetric change by Hg2+ induced configuration transformation of the rhodamine. Moreover, the fluorescence changes of the chemosensor were dramatically specific for Hg2+ in the presence of other metal ions, which could meet the selective requirements for practical application. Under optimized experimental conditions, the linear response range covered the concentration range of Hg2+ from 0 to 1.0 × 10−6 M, and the limit of detection was calculated to be 2.7 × 10−8 M. In addition, the probe was also successfully applied to the determination of Hg2+ in water samples, test strips and living cells.
Figure optionsDownload as PowerPoint slide
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 123, 5 April 2014, Pages 216–223