Abstract
The solvatochromic behavior of non-activated indolinobenzospiropyran 6-carboxylates SP-1– 2 in aqueous binary solvent mixtures was investigated. Marked negative solvatochromism was exhibited by SP-1– 2 in the whole region of solvent polarity examined. Excellent linear relationships were observed between λ max and the solvent polarity parameter, E T(BM), for the aqueous binary solvent mixtures. The sensitivity of the binary solvent system toward the transition energies of the MC form was highest in the water–methanol solvents in all SP molecules examined. As of other merocyanine dyes in neat solvents, the MC form of spiropyran 6-carboxylates in the aqueous binary solvents showed a negative solvatochromism. The aqueous solvent was found to affect the solvatochromic behavior of the merocyanine dyes by increasing the sensitivity of the chromophore to the effects of solvation via H-bonding.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
