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Article Abstract
A novel near-infrared fluorescent probe TM2 based on a rhodamine-bearing framework was disclosed with a large Stokes shift (100 nm). TM2 exhibits highly selective recognition for Cu in EtOH/HO (1 : 1, v/v) solution with a low detection limit (2.3 μM) and a wide detection range (0-50 μM). Detection of Cu is undisturbed at physiological pH levels of 5-9. This recognition mechanism is attributed to the formation of a 1 : 1 complex between TM2 and Cu, validated by Job's plot, H NMR titration, and LC-MS experiments. Moreover, the successful fluorescence imaging of Cu both and was also accomplished.
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| http://dx.doi.org/10.1039/d4ay01922a | DOI Listing |
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