A comparative study of two thienopyrimidine Schiff base probes for sequential monitoring of Ga3+ and Pd2.
Luminescence
; 39(5): e4773, 2024 May.
Article
in En
| MEDLINE
| ID: mdl-38757733
ABSTRACT
Two Schiff base probes (S1 and S2) were prepared and synthesized by incorporating thienopyrimidine into salicylaldehyde or 3-ethoxysalicylaldehyde individually, with the aim of detecting Ga3+ and Pd2+ sequentially. Upon chelation with Ga3+, S1 and S2 exhibited fluorescence enhancement in DMSO/H2O buffer. Both S1-Ga3+ and S2-Ga3+ were quenched by Pd2+. The limit of detection for S1 in response to Ga3+ and Pd2+ was 2.86 × 10-7 and 4.4 × 10-9 M, respectively. For S2, the limit of detection for Ga3+ and Pd2+ was 4.15 × 10-8 and 3.0 × 10-9 M, respectively. Furthermore, the complexation ratios of both S1 and S2 with Ga3+ and Pd2+ were determined to be 12 through Job's plots, ESI-MS analysis, and theoretical calculations. Two molecular logic gates were constructed, leveraging the response behaviors of S1 and S2. Moreover, the potential utility of S1 and S2 for monitoring Ga3+ and Pd2+ in domestic water was verified.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Palladium
/
Pyrimidines
/
Schiff Bases
/
Fluorescent Dyes
/
Gallium
Language:
En
Journal:
Luminescence
Journal subject:
BIOFISICA
/
BIOQUIMICA
Year:
2024
Document type:
Article
Affiliation country:
China