Polymer films doped with boron difluoride ortho-hydroxydibenzoylmethanates: Solvatochromism and solvent-induced exciplex formation

The spectral properties and solvatochromic behavior of boron difluoride ortho-hydroxydibenzoyl-methanates in polymer matrices with different polarity (polystyrene, polyvinyl chloride, polycarbonate, poly(methyl methacrylate)) were investigated. The specific interaction of polystyrene, polycarbonate and poly(methyl methacrylate) with the investigated fluorophores was revealed. It was shown that the dyes are capable to form exciplexes with phenyl rings of polystyrene. The spectral properties of polystyrene films doped with boron difluoride ortho-hydroxydibenzoylmethanates, which were obtained by the pour -ing method, significantly depend on the solvent from which they were formed. This makes it possible to control the luminescence color of the films at the manufacturing stage. (c) 2021 Elsevier B.V. All rights reserved.

Automated summary

The spectral properties and solvatochromic behavior of boron difluoride ortho-hydroxydibenzoyl-methanates in polymer matrices with different polarity were investigated. Specific interactions of the investigated fluorophores with polystyrene, polycarbonate, and poly(methyl methacrylate) were revealed. The spectral properties of polystyrene films doped with the fluorophores significantly depend on the solvent used, allowing for control of luminescence color during manufacturing.