ArticleChemistry, an Asian journal2026
Solvatofluorochromic Behavior of Naphthalene-Based π-Conjugated Compounds Governed by Intramolecular Charge Transfer.
Article in Chemistry, an Asian journal, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Solvatofluorochromic compounds are of great interest because their fluorescence properties sensitively respond to solvent polarity, enabling applications in molecular sensing and optoelectronic devices. However, understanding the structure-fluorescence property relationships governing their solvatofluorochromic behavior remains limited. In this study, we conducted a detailed analysis of the solvatofluorochromism of seven novel naphthalene-based π-conjugated compounds in six solvents of different polarities. The ultraviolet-visible absorption and fluorescence spectra of each compound were measured, and changes in the fluorescence wavelengths were compared. Absolute fluorescence quantum yields and lifetimes were also determined. Five methyl ester compounds exhibited solvatofluorochromic behavior, and the relationship between their Stokes shift and solvent polarity was successfully established. Furthermore, theoretical calculations were performed using density functional theory and time-dependent density functional theory. An analysis based on the Lippert-Mataga equation quantitatively evaluated the difference in dipole moments between the ground state (S
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