| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 25981 | Journal of Photochemistry and Photobiology A: Chemistry | 2016 | 8 Pages |
•A new fluorescent probe SB-1 was explored for Al3+ with nanomolar detection ability.•X-ray crystal structure of SB-1 was also studied.•This sensing ability was explained by theoretical calculations.•The SB-1 was able to illuminate Al3+ inside the cells.
A salicylimine based Al3+ specific fluorescent turn on probe (SB-1) was designed, characterized and evaluated through various spectroscopic techniques. The 1:1 chemical interaction between SB-1 and Al3+ takes place through ONO donor sites leading to chelation enhanced fluorescence (CHEF). The lowest detection limit for this measurement was found to be 7.69 × 10−9 M. The binding interaction of SB-1 with Al3+ was studied through 1H & 13C NMR studies, IR as well as through DFT calculations. The HeLa live cells were found to be permeable enough for SB-1 and was able to detect Al3+ inside the cells through confocal microscope.
Graphical abstractA dichloro-substituted salicylimine (SB1) detected Al3+ down to nanomolar level through bright yellow emission.Figure optionsDownload full-size imageDownload as PowerPoint slide
