| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 177160 | Dyes and Pigments | 2011 | 5 Pages |
A bis-rhodamine based fluorescent chemosensor for naked-eye detection of Cu2+ with enhanced sensitivity as compared to mono-rhodamine derivative has been synthesized, and its selectivity for Cu2+ in the presence of other competitive metal ions (Li+, Na+, K+, Cs+, Mg2+, Ca2+, Sr2+, Cr3+, Mn2+, Fe2+, Fe3+, Co2+, Ni2+, Zn2+, Cd2+, Hg2+, and Pb2+), and application in bio-imaging are demonstrated.
► The sensitivity and selectivity for Cu2+ ions of two chemosensors compared. ► The structure of Cu2+-bis-rhodamine complex has been determined. ► NMR, EPR, UV, Fluorescence and energy minimization studies confirm the structure. ► The sensor is stable over a broad range of pH. ► The chemosensor is useful for the imaging of bacteria exposed to Cu2+ ions ion.
