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A Squaraine-Based Colorimetric and “Turn on” Fluorescent Sensor for Selective Detection of Hg2+ in an Aqueous Medium
Abstract
A novel squaraine-based chemosensor SQ-1 has been synthesized, and its sensing behavior toward various metal ions was investigated by UV-vis and fluorescence spectroscopies. In AcOH-H(2)O (40:60, v/v) solution, Hg(2+) ions coordinate with SQ-1 causing a deaggregation which induces a visual color and absorption spectral changes as well as strong fluorescence. In contrast, the addition of other metals (e.g., Pb(2+), Cd(2+), Cu(2+), Zn(2+), Al(3+), Ni(2+), Co(2+), Fe(3+), Ca(2+), K(+), Mg(2+), Na(+), and Ag(+)) does not induce these changes at all. Thus SQ-1 is a specific Hg(2+) sensing agent due to the inducing deaggregation of the dye molecule by Hg(2+).
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Cited by
Barman, S., & Sadhukhan, M. (2012) · Journal of Materials Chemistry · doi:10.1039/c2jm35501a · Cited by 462
The pyridyl group in ligand design for selective metal ion complexation and sensing
Hancock, R. D. (2013) · Chem. Soc. Rev. · doi:10.1039/c2cs35224a · Cited by 353
Metadata
- Authors
- Chen, C., Wang, R., Guo, L., Fu, N., Dong, H., & Yuan, Y.
- Venue
- Organic Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2011-02-09
- Volume
- 13
- Issue
- 5
- Pages
- 1162-1165
- ISSN
- 1523-7052 (ISSN-L)
- 1523-7060
- OpenAlex
- W2329797396
- Cited by
- 205
- References
- 0
- FWCI
- 12.58
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: A Squaraine-Based Colorimetric and “Turn on” Fluorescent Sensor for Selective Detection of Hg2+ in an Aqueous Medium. https://app.cochat.ai/papers/10.1021/ol200024g
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- Chen, C., Wang, R., Guo, L., Fu, N., Dong, H., & Yuan, Y. (2011). A Squaraine-Based Colorimetric and “Turn on” Fluorescent Sensor for Selective Detection of Hg2+ in an Aqueous Medium. Organic Letters. https://doi.org/10.1021/ol200024g
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