1. Two-photon solvatochromism III: Experimental study of the solvent effects on two-photon absorption spectrum of p-nitroaniline
- Author
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Wojciech Bartkowiak, Marek Samoc, Joanna Michalska, and Małgorzata Wielgus
- Subjects
Absorption spectroscopy ,Chemistry ,Process Chemistry and Technology ,General Chemical Engineering ,Solvatochromism ,Analytical chemistry ,Absorption cross section ,Photochemistry ,Two-photon absorption ,Solvent ,chemistry.chemical_compound ,Intramolecular force ,Propylene carbonate ,Solvent effects - Abstract
We report on the solvent influence on the two-photon absorption spectra of p -nitroaniline. Measurements of the two-photon absorption cross section values were performed in three solvents (1,4-dioxane, propylene carbonate, dimethyl sulfoxide) using the Z-scan technique. The most important finding in this report is the observation that two-photon absorption cross section value, corresponding to the intramolecular charge-transfer state, is significantly intensified with the solvent polarity increase. In the case of a strongly positive solvatochromic molecule, the two-level model correctly predicts the observed two-photon absorption cross section value increase caused by the solvent polarity change.
- Published
- 2015
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