In:
European Journal of Inorganic Chemistry, Wiley, Vol. 2021, No. 13 ( 2021-04-08), p. 1287-1296
Abstract:
Fluorescence detection of Zn 2+ and Cd 2+ is of continuing interest due to their significant importance in biological and environmental sciences. Strict discrimination of Zn 2+ and Cd 2+ by fluorescent probe molecules has still been a challenging task because of the small difference in ionic radii of these group 12 metal ions. In this study, three heptadentate fluorescent probes with a common 2,6‐lutidylenediamine core and four quinoline/isoquinoline sidearms are presented. The N,N,N′,N′ ‐tetrakis( 2‐quinolyl methyl)‐2,6‐lutidylenediamine (TQLN) exhibits Zn 2+ ‐specific fluorescence enhancement via an excimer formation, while the N,N,N′,N′ ‐tetrakis( 1‐isoquinolyl methyl)‐2,6‐lutidylenediamine (1‐isoTQLN) responds specifically to Cd 2+ at the short wavelength region by monomer emission. The N,N,N′,N′ ‐tetrakis( 3‐isoquinolyl methyl)‐2,6‐lutidylenediamine (3‐isoTQLN) responds to both Zn 2+ and Cd 2+ at different emission wavelengths, acting as a dual sensor with hybrid properties of TQLN and 1‐isoTQLN. Methoxy‐substituted derivatives of 1‐ and 3‐isoTQLN were also examined.
Type of Medium:
Online Resource
ISSN:
1434-1948
,
1099-0682
DOI:
10.1002/ejic.v2021.13
DOI:
10.1002/ejic.202001171
Language:
English
Publisher:
Wiley
Publication Date:
2021
detail.hit.zdb_id:
1475009-0
detail.hit.zdb_id:
1409951-2
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