Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/21483
Title: A highly selective chemosensor for Al(III) and Zn(II) and its coordination with metal ions
Authors: Cao, W
Zheng, XJ
Sun, JP
Wong, WT 
Fang, DC
Zhang, JX
Jin, LP
Issue Date: 2014
Publisher: American Chemical Society
Source: Inorganic chemistry, 2014, v. 53, no. 6, p. 3012-3021 How to cite?
Journal: Inorganic Chemistry 
Abstract: This paper reports a fluorescence chemosensor, N-(benzimidazol-2-yl) salicylaldimine (H2L), for Zn(II) and Al(III) ions. H2L has high selectivity for Al(III) in dimethyl sulfoxide (DMSO) and for Zn(II) in N,N-dimethylformamide (DMF). In methanol, Zn(II) and Al(III) could also be distinguished by H2L with different excitation wavelengths. The fluorescent species [Zn(HL)(H2O)(CH3OH)]+, [Zn(HL)(H2O)(DMF)]+, [Al(HL)2(OH)(H 2O)], and [Al(HL)(OH)2(H2O)(DMSO)] formed in solution were established by a combination of experimental and theoretical methods, including Job's plot, 1H NMR titration, electrospray inonization mass spectrometry (ESI-MS), and B3LYP-SCRF/6-31(d) and TD-B3LYP-SCRF/6-31G* density functional theory methods. The results show that Zn(II) and Al(III) are all coordinated to the imine nitrogen atom and the hydroxyl oxygen atom from H2L, which is the same as the M 2+ ions in the obtained mononuclear complexes [M(HL) 2(CH3OH)2] (where M = Cd, Ni, Co, and Mg). The detection limits of H2L for Zn(II) were 5.98 μM in methanol and 5.76 μM in DMF, while the detection limits of H2L for Al(III) were 3.3 μM in methanol and 5.25 μM in DMSO. Furthermore, it is also confirmed that H2L has low toxicity for HeLa cells and could be used to detect Zn(II) and Al(III) ions in living cells by bioimaging.
URI: http://hdl.handle.net/10397/21483
ISSN: 0020-1669
DOI: 10.1021/ic402811x
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

46
Last Week
1
Last month
3
Citations as of Aug 17, 2017

WEB OF SCIENCETM
Citations

42
Last Week
0
Last month
2
Citations as of Aug 14, 2017

Page view(s)

31
Last Week
1
Last month
Checked on Aug 13, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.