<p>We carried out a systematic investigation on solvent-dependent spectroscopic and photophysical properties of diphenylamine (DPA) including singlet (Δ<i>E</i><sup>(0,0)</sup>) and triplet (Δ<i>E</i>(triplet)) excited states as well as the triplet decay rate constant (<i>k</i><sub>T</sub>), by following both single and multiparametric approaches. Analyses of the obtained data as well as the interpretation of sign and magnitude of the regression coefficients allowed for the understanding how the specific and non-specific solvent properties impact on the thermodynamic (Δ<i>E</i>) and kinetic (<i>k</i><sub>T</sub>) parameters related to the photochemical behaviour of DPA.</p> Graphical abstract <p>Single and multiparametric methods led to understand how the specific and non-specific solvent properties impact on the thermodynamic (Δ<i>E</i><sup>(0,0)</sup> and Δ<i>E</i>(Triplet)) and kinetic (<i>k</i><sub>T</sub>) parameters of the probe DPA through the interpretation of sign and magnitude of the regression coefficients.</p> <p></p>

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Simple and multiparametric approaches to correlate the solvent effect on the spectroscopic and kinetic parameters of diphenylamine

  • Sergio M. Bonesi,
  • Stefano Protti

摘要

We carried out a systematic investigation on solvent-dependent spectroscopic and photophysical properties of diphenylamine (DPA) including singlet (ΔE(0,0)) and triplet (ΔE(triplet)) excited states as well as the triplet decay rate constant (kT), by following both single and multiparametric approaches. Analyses of the obtained data as well as the interpretation of sign and magnitude of the regression coefficients allowed for the understanding how the specific and non-specific solvent properties impact on the thermodynamic (ΔE) and kinetic (kT) parameters related to the photochemical behaviour of DPA.

Graphical abstract

Single and multiparametric methods led to understand how the specific and non-specific solvent properties impact on the thermodynamic (ΔE(0,0) and ΔE(Triplet)) and kinetic (kT) parameters of the probe DPA through the interpretation of sign and magnitude of the regression coefficients.