A fluorescent and colorimetric probe based on naphthalene diimide and its high sensitivity towards copper ions when used as test strips

Herein, a red fluorescent and colorimetric probe ( NDI-Py ) based on naphthalene diimide was designed and synthesized, which exhibited rapid response, high sensitivity and selectivity towards copper ions, and the detection limit was as low as 0.97 μM in solution. Furthermore, NDI-Py demonstrated a s...

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Bibliographic Details
Published in:RSC advances 2019-04, Vol.9 (22), p.12675-1268
Main Authors: Zong, Luyi, Wang, Can, Song, Yuchen, Hu, Jie, Li, Qianqian, Li, Zhen
Format: Article
Language:English
Subjects:
Chemistry
Colorimetry
Copper
Diimide
Fluorescence
Naphthalene
Planar structures
Selectivity
Sensitivity
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Summary:Herein, a red fluorescent and colorimetric probe ( NDI-Py ) based on naphthalene diimide was designed and synthesized, which exhibited rapid response, high sensitivity and selectivity towards copper ions, and the detection limit was as low as 0.97 μM in solution. Furthermore, NDI-Py demonstrated a strong red emission in the aggregated state because of its non-planar structure. Thus, it can act as a test strip to conveniently monitor copper ions with the detection limit as low as 2.0 μM. A red fluorescent and colorimetric probe ( NDI-Py ) exhibited high selectivity and sensitivity towards copper ions both in solution and on silica gel plates.
ISSN:2046-2069
2046-2069
DOI:10.1039/c9ra01122f