These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: A highly selective acridine-based fluorescent probe for detection of Al3+ in alcoholic beverage samples.
    Author: Dos Santos Carlos F, Monteiro RF, da Silva LA, Zanlorenzi C, Nunes FS.
    Journal: Spectrochim Acta A Mol Biomol Spectrosc; 2020 Apr 15; 231():118119. PubMed ID: 32032858.
    Abstract:
    4,5-Bis(phtalimidomethyl)acridine (L) was studied as a chemosensor for metal ions in alcoholic matrices and showed to be selective for Al3+, through a linear fluorescence enhancement of 230% in the concentration range of 10-70 μmol L-1. Benesi-Hildebrand and Job's formalisms indicated the formation of a 1:1 (Al3+:L) complex with a binding constant of 6.30 × 103 L mol-1. DFT/TDDFT calculations allowed access to the energies of frontier orbitals and could explain the fluorescence augmentation upon complex formation, due to the restraining of PET process. Limit of detection and limit of quantification (R2 = 0.998, least squares method) are 1.130 and 3.768 μmol L-1, respectively, and validation was verified based on the variation of several analytical conditions. Practical application in spiked Brazilian sugarcane spirit showed recovery of (84 ± 0.42)% with no effect of interfering ions.
    [Abstract] [Full Text] [Related] [New Search]