Dual-mode N 4 O 3 tripodal hemi-salen Schiff base sensor for selective colorimetric detection of Ni 2+ and fluorometric sensing of Zn 2+ : analytical applications across food, environmental, and forensic matrices

Key Points

• This research aims to develop a molecular probe for the selective detection of nickel and zinc ions.
• Utilized a tripodal N4O3 donor tris-Schiff base hemi-salen molecular probe L for testing.
• Evaluated colorimetric methods for Ni2+ and fluorometric methods for Zn2+ in aqueous solutions.
• Achieved selective colorimetric detection of Ni2+ in various matrices.
• Enabled turn-on fluorometric sensing of Zn2+ with high sensitivity.