Journal of Fluorescence

, Volume 25, Issue 4, pp 979–983 | Cite as

TEMPO-Attached Pre-fluorescent Probes Based on Pyridinium Fluorophores

  • Carolina Aliaga
  • Freddy Celis
  • Susan Lühr
  • Rubén Oñate


The photophysical behavior of three pyridinium-derived fluorophores, the N-aryl-2,4,6-triphenylpyridinium, the N-aryl-5,6-dihydro-2,4-diphenylbenzo[h]quinolinium and the N-aryl-5,6,8,9-tetrahydro-7-phenyldibenzo[c,h]acridinium perchlorates, was investigated. Comparison of their fluorescence quantum yields led to the preparation of a novel, more sensitive pyridinium-based, TEMPO-attached prefluorescent probe for H-abstraction processes, the N-{4-[4-(N-oxyl-2,2,6,6-tetramethylpiperidinyl)carbonylamino]phenyl}-5,6,8,9-tetrahydro-7-phenyldibenzo[c,h]-acridinium perchlorate.


Pre-fluorescent probe Pyridinium Pyrylium Fluorescence Nitroxide EPR 



This work was financed by FONDECYT project 1110736 F. C. thanks Becas Chile. We thank Prof. J. C. Scaiano and M. Decan for allowing the photochemical and chemical characterization of compounds 1b, 2b and 3b.


This study was funded by 1110736 FONDECYT Project.

Conflict of Interest

The authors declare that they have no conflict of interest


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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Carolina Aliaga
    • 1
    • 2
  • Freddy Celis
    • 3
    • 4
  • Susan Lühr
    • 1
  • Rubén Oñate
    • 1
  1. 1.Facultad de Química y BiologíaUniversidad de Santiago de ChileSantiagode Chile
  2. 2.Centro para el Desarrollo de la Nanociencia y la Nanotecnología, CEDENNAEstación CentralChile
  3. 3.Departamento de Química, Facultad de Ciencias Naturales y ExactasUniversidad de Playa AnchaValparaísoChile
  4. 4.Centro de Estudios Avanzados (CEA)Universidad de Playa AnchaViña del MarChile

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