%0 Journal Article
%T A phenol-based compartmental ligand as a potential chemosensor for zinc(ii) cations
%A Chen
%A Jingwen
%A Cao
%A Shuhong
%A Wang
%A Dandan
%A Wu
%A Shengde
%A Wang
%A Xiaoyong
%J Journal of the Brazilian Chemical Society
%D 2009
%I Sociedade Brasileira de Qu¨Şmica, SBQ
%R 10.1590/S0103-50532009000100004
%X an "end-off"-type compartmental lewis base, 2,6-bis(2-hydroxybenzyl-2-hydroxyethylamino)methyl-4-methylphenol (l), was synthesized as a potential chemosensor for zn2+ ions. l coordinates two zn2+ cations in methanol-water solution, forming a dinuclear complex whose formulation was confirmed by esi-ms spectroscopy and job's plot. the fluorescence of l is remarkably enhanced by zn2+ as compared with k+, ca2+, mg2+, cu2+, pb2+, mn2+, fe3+, fe2+, co2+, cd2+ and ni2+ ions. the fluorescence enhancement is attributed to the complexation of zn2+ with l, which interrupts the photoinduced electron transfer process and rigidifies the molecular skeleton of l. the fluorescence of l is greatly dependent on the acidity and polarity of the solvents. this compound may be used as a probe to sense zn2+ ion in polar protic solvents after proper modification.
%K chemosensor
%K fluorescence mechanism
%K phenol derivative
%K solvent effects
%K zinc(ii).
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0103-50532009000100004&lng=en&nrm=iso&tlng=en