Development of a cell permeable red-shifted CHEF-based chemosensor for Al(3+) ion by controlling PET.

Spectrochim Acta A Mol Biomol Spectrosc

Department of Chemistry, Burdwan University, Golapbag, Burdwan 713104, West Bengal, India. Electronic address:

Published: March 2016


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Article Abstract

A structurally modified quinazoline derivative (L) acts as highly selective chemosensor for Al(3+) ions in DMSO-H2O (1:9, v/v) over the other competitive metal ions. L shows a red shifted fluorescence after the addition of Al(3+) ions and later the further fluorescence enhancement is due to chelation enhanced fluorescence (CHEF) through inhibition of photoinduced electron transfer (PET). This probe (L) detects Al(3+) ions as low as 9nM in DMSO-H2O (1:9, v/v) at biological pH. The non-cytotoxic probe (L) can efficiently detect the intercellular distribution of Al(3+) ions in living cells under a fluorescence microscope to exhibit its sensible applications in the biological systems.

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http://dx.doi.org/10.1016/j.saa.2015.11.032DOI Listing

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