Ratiometric fluorescence sensing and intracellular imaging of Al3+ ions driven by an intramolecular excimer formation of a pyrimidine–pyrene scaffold
作者:Sudipta Das、Animesh Sahana、Arnab Banerjee、Sisir Lohar、Damir A. Safin、Maria G. Babashkina、Michael Bolte、Yann Garcia、Ipsit Hauli、Subhra Kanti Mukhopadhyay、Debasis Das
DOI:10.1039/c3dt32908a
日期:——
An Al3+ selective ratiometric fluorescent probe (L) has been synthesized by condensation of 4,5-diaminopyrimidine with 1-pyrenecarboxaldehyde. The structure of L has been confirmed by single crystal X-ray analysis. In the presence of Al3+, L exhibits a considerable excimer emission at 445 nm along with the decrease of its monomer emission at 368 nm in DMSOâH2O (4â:â1, v/v). The lowest detection limit for Al3+ is 0.24 μM. Furthermore, L can permeate through the cell membrane and detects intracellular Al3+ ions under a fluorescence microscope.