Analysis of fluorescence quenching of naphthalene by two mercury containing organometallic complexes

  1. López-De-Luzuriaga, J.M. 1
  2. Monge, M. 1
  3. Olmos, M.E. 1
  4. Pascual, D. 1
  1. 1 Universidad de La Rioja
    info

    Universidad de La Rioja

    Logroño, España

    ROR https://ror.org/0553yr311

Revue:
Journal of Luminescence

ISSN: 0022-2313

Année de publication: 2014

Volumen: 154

Pages: 322-327

Type: Article

DOI: 10.1016/J.JLUMIN.2014.05.005 SCOPUS: 2-s2.0-84901981620 WoS: WOS:000340687600051 GOOGLE SCHOLAR

D'autres publications dans: Journal of Luminescence

Objectifs de Développement Durable

Résumé

Two organometallic complexes, named [Hg(2-C6H 4PPh2)2] (1) and [{Au(C6F 5)}2{Hg(2-C6H4PPh2) 2}] (2) have been studied as quenchers of the fluorescence of naphthalene. Positive deviations were observed in the Stern-Volmer (S-V) plots for both quenchers. The analyses of the data reveal the existence of transient components in the dynamic quenching. The diffusion coefficients of these complexes have been obtained by two different methods, through the Stokes-Einstein equation, and from 1H PGSE NMR experiments. With these values, and taking into account the experimental KT constants, the radii of the transient quenching spheres were obtained, which show unusually large values. © 2014 Elsevier B.V.