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: Highly selective colorimetric and fluorometric probes for fluoride ions based on nitrobenzofurazan-containing polymers.
    Author: Hu J, Li C, Cui Y, Liu S.
    Journal: Macromol Rapid Commun; 2011 Apr 04; 32(7):610-5. PubMed ID: 21438061.
    Abstract:
    We report on a novel colorimetric and fluorometric chemosensor for fluoride ions based on 4-(2-acryloyloxyethylamino)-7-nitro-2,1,3-benzoxadiazole (NBDAE)-labeled polymers. Upon gradual addition of fluoride ions (F⁻), the green fluorescence emission of NBDAE moieties can be dramatically quenched, accompanied with the distinct colorimetric transition from green to yellow. NBDAE moieties are capable of selectively recognizing F⁻ ions via hydrogen-bonding (H-bonds) interactions at low F⁻ concentration and subjected to further deprotonation process at high F⁻ concentration. NBDAE-labeled polymers in organic solvents possess high selectivity and fluorescence "turn-off" characteristics toward the sensing of F⁻ ions with the detection limit down to ≈ 0.8 µM.
    [Abstract] [Full Text] [Related] [New Search]