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A trimethine cyanine dye for copper (II) detection based on the transformation between monomers and J-aggregates via G-quadruplex regulation.
- Source :
-
Journal of Chemical Sciences . Mar2023, Vol. 135 Issue 1, p1-7. 7p. - Publication Year :
- 2023
-
Abstract
- A trimethine cyanine dye (MTC) was developed for Cu2+ detection. MTC can exhibit different aggregation modes, such as monomers, dimers, H- and J-aggregates. Here, G-quadruplex (G2) with modification of an alkyne at the 5′ end could regulate J-aggregates of MTC to monomers. Upon addition of Cu2+, sodium ascorbate, and another sequence (G1) with azide modification at the 3′ end, a new sequence was ligated by click chemistry of azide-alkyne cycloaddition, accompanied by MTC monomers assembling into J-aggregates again. The colors of the solution turned pink to blue. This strategy shows high specificity and selectivity and can realize monitoring Cu2+ in tap water. This simple method uses only a Uv-vis instrument to finish Cu2+ detection. A cyanine dye transformation between J-aggregates and monomers was applied to monitor the Cu2+ level via Cu+-promoted azide-alkyne cycloaddition of two rich guanine sequences. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09743626
- Volume :
- 135
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Journal of Chemical Sciences
- Publication Type :
- Academic Journal
- Accession number :
- 161981682
- Full Text :
- https://doi.org/10.1007/s12039-023-02135-8