A series of facile optical probe has been easily developed by a one-step Schiff base type reaction of 2,4-dihydroxybenzaldehyde and ortho, meta or para aminophenol. Schiff base compounds as fluorescence sensor were utilized to identify metal ions by spectrophotometric techniques. The data of absorption and emission spectra displayed the extraordinary selective and sensitive sensor properties for Schiff base probe derived from ortho aminophenol (SB-2) toward Al3+ ions. Upon introducing Al3+ ions, an excellent increase in the fluorescence intensity of the probe (SB-2) resulting in color change was observed because of blocking the photoinduced electron transfer (PET) mechanism of azomethine unit. The specific bonding mode of probe (SB-2) with Al3+ was verified by using a series of spectroscopic techniques such as FT-IR, 1H NMR, and UV-vis (Job-plot data). The detection limit of probe (SB-2) toward Al3+was determined around 10−7M. Furthermore, cell imaging studies of probe (SB-2) were also performed and from these experiments, it was seen that the presence of even trace amounts of Al3+ in living cells could be noticeably detected by (SB-2). In this study, antimicrobial properties of Schiff base compounds were also carried out towards some selected bacteria species. This presented work provides a method for design, facile synthesis and application of effective fluorescence probes toward Al3+ ions in biological systems.
A series of facile optical probe has been easily developed by a one-step Schiff base type reaction of 2,4-dihydroxybenzaldehyde and ortho, meta or para aminophenol. Schiff base compounds as fluorescence sensor were utilized to identify metal ions by spectrophotometric techniques. The data of absorption and emission spectra displayed the extraordinary selective and sensitive sensor properties for Schiff base probe derived from ortho aminophenol (SB-2) toward Al3+ ions. Upon introducing Al3+ ions, an excellent increase in the fluorescence intensity of the probe (SB-2) resulting in color change was observed because of blocking the photoinduced electron transfer (PET) mechanism of azomethine unit. The specific bonding mode of probe (SB-2) with Al3+ was verified by using a series of spectroscopic techniques such as FT-IR, 1H NMR, and UV-vis (Job-plot data). The detection limit of probe (SB-2) toward Al3+was determined around 10−7M. Furthermore, cell imaging studies of probe (SB-2) were also performed and from these experiments, it was seen that the presence of even trace amounts of Al3+ in living cells could be noticeably detected by (SB-2). In this study, antimicrobial properties of Schiff base compounds were also carried out towards some selected bacteria species. This presented work provides a method for design, facile synthesis and application of effective fluorescence probes toward Al3+ ions in biological systems.
Primary Language | English |
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Subjects | Chemical Engineering |
Journal Section | Kimya / Chemistry |
Authors | |
Publication Date | September 1, 2020 |
Submission Date | January 23, 2020 |
Acceptance Date | April 21, 2020 |
Published in Issue | Year 2020 |