An integrated approach for the interpretation of emission fluorescence of DMABN-Crown derivatives in polar environments

Silvia Carlotto, Raffaele Riccò, Camilla Ferrante, Michele Maggini, Antonino Polimeno*, Caterina Benzi, Vincenzo Barone

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

We analyze the behavior in several solvents of a perspective metal sensor, namely benzonitrile (DMABN-Crown5), a derivative of 4-(N,N-dimethylamino) benzonitrile (DMABN) that exhibits a dual fluorescence due to a twisted intra-molecular charge transfer process. To this end, we extend a stochastic modeling previously employed for DMABN, in which internal degrees of freedom are coupled with an effective solvent relaxation variable. Evaluation of potential energy surfaces using advanced QM approach and estimates of dissipative parameters based on hydrodynamic arguments are discussed. Emission fluorescence is calculated by solving a diffusion/sink/source equation for the stationary population of excited state, and compared to experimentally measured emission fluorescence of DMABN-Crown5.

Original languageEnglish
Pages (from-to)204-209
Number of pages6
JournalChemical Physics Letters
Volume467
Issue number1-3
DOIs
Publication statusPublished - 15 Dec 2008
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Physics and Astronomy(all)

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