Abstract
A multi-responsive sensor 1 was constructed by combining a ferrocene unit and a rhodamine block via a carbohydrazone bond. The sensor showed high selectivity toward Cu2+ over other common metal ions in a wide pH range with excellent reversibility and rapid response. The obvious color change from colorless to pink upon the addition of Cu2+ could make it a suitable 'naked-eye' indicator for Cu2+. The detection limit (LOD) obtained was down to 2.0 nM and the association constant (Ka) was evaluated as 4.65 × 107 M-1. The accuracy for detecting Cu2+ in environmental river water was compared favorably with the traditional atomic absorption spectroscopy method (AAS). Finally, we proposed a reversible ring-opening mechanism (Off-On) of the rhodamine spirolactam induced by Cu2+ binding and a 2:1 stoichiometric structure between 1 and Cu2+.
| Original language | English |
|---|---|
| Pages (from-to) | 5274-5280 |
| Number of pages | 7 |
| Journal | Analyst |
| Volume | 138 |
| Issue number | 18 |
| DOIs | |
| State | Published - Sep 21 2013 |
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ASJC Scopus subject areas
- Analytical Chemistry
- Spectroscopy
- Electrochemistry
- Biochemistry
- Environmental Chemistry
Cite this
Determination of trace amount of Cu2+ with a multi-responsive colorimetric and reversible chemosensor. / Mi, Yong Sheng; Cao, Zhong; Chen, Ya Ting; Xie, Qiu Fen; Xu, Ying Ying; Luo, Yong Feng; Shi, Jianjian; Xiang, Jian Nan.
In: Analyst, Vol. 138, No. 18, 21.09.2013, p. 5274-5280.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Determination of trace amount of Cu2+ with a multi-responsive colorimetric and reversible chemosensor
AU - Mi, Yong Sheng
AU - Cao, Zhong
AU - Chen, Ya Ting
AU - Xie, Qiu Fen
AU - Xu, Ying Ying
AU - Luo, Yong Feng
AU - Shi, Jianjian
AU - Xiang, Jian Nan
PY - 2013/9/21
Y1 - 2013/9/21
N2 - A multi-responsive sensor 1 was constructed by combining a ferrocene unit and a rhodamine block via a carbohydrazone bond. The sensor showed high selectivity toward Cu2+ over other common metal ions in a wide pH range with excellent reversibility and rapid response. The obvious color change from colorless to pink upon the addition of Cu2+ could make it a suitable 'naked-eye' indicator for Cu2+. The detection limit (LOD) obtained was down to 2.0 nM and the association constant (Ka) was evaluated as 4.65 × 107 M-1. The accuracy for detecting Cu2+ in environmental river water was compared favorably with the traditional atomic absorption spectroscopy method (AAS). Finally, we proposed a reversible ring-opening mechanism (Off-On) of the rhodamine spirolactam induced by Cu2+ binding and a 2:1 stoichiometric structure between 1 and Cu2+.
AB - A multi-responsive sensor 1 was constructed by combining a ferrocene unit and a rhodamine block via a carbohydrazone bond. The sensor showed high selectivity toward Cu2+ over other common metal ions in a wide pH range with excellent reversibility and rapid response. The obvious color change from colorless to pink upon the addition of Cu2+ could make it a suitable 'naked-eye' indicator for Cu2+. The detection limit (LOD) obtained was down to 2.0 nM and the association constant (Ka) was evaluated as 4.65 × 107 M-1. The accuracy for detecting Cu2+ in environmental river water was compared favorably with the traditional atomic absorption spectroscopy method (AAS). Finally, we proposed a reversible ring-opening mechanism (Off-On) of the rhodamine spirolactam induced by Cu2+ binding and a 2:1 stoichiometric structure between 1 and Cu2+.
UR - http://www.scopus.com/inward/record.url?scp=84881655726&partnerID=8YFLogxK
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U2 - 10.1039/c3an00741c
DO - 10.1039/c3an00741c
M3 - Article
VL - 138
SP - 5274
EP - 5280
JO - The Analyst
JF - The Analyst
SN - 0003-2654
IS - 18
ER -