Two new isomerous fluorescent chemosensors for Al(3+) based on photoinduced electron transfer.

TitleTwo new isomerous fluorescent chemosensors for Al(3+) based on photoinduced electron transfer.
Publication TypeJournal Article
Year of Publication2013
AuthorsJiang X-J, Tang H, Li X-Y, Zang S-Q, Hou H-W, Mak TCW
JournalSpectrochimica acta. Part A, Molecular and biomolecular spectroscopy
Volume115
Pagination26-32
Date Published2013 Nov
Abstract

Two new isomerous PET fluorescent chemosensors (L and L') for Al(3+) have been designed, synthesized and characterized. The two chemosensors exhibited fluorescence enhancement upon binding Al(3+) in CH3CN by PET inhibition processes from both the sulfur and the nitrogen donors to anthracene. The job's plot, Benesi-Hildebrand plot and (1)H NMR titration experiments indicate that both chemosensors form a 1:1 complex with Al(3+). The binding constants were calculated to be (1.432±0.186)×10(5) and (1.427±0.970)×10(5), respectively. Furthermore, the lowest detection limit for Al(3+) in CH3CN was determined to be 4.8×10(-7)M and 2.2×10(-7)M, respectively.

DOI10.1007/s00586-013-2886-2
Alternate JournalSpectrochim Acta A Mol Biomol Spectrosc