Low‐cost Photoactive Hybrid Materials: From Green Synthesis to Multi‐technique Analytical Characterization

Eleonora CONTEROSITO, Valentina Toson, Enrico BOCCALERI, Diego Antonioli, Marco MILANESIO, Luca Palin, Claudia Barolo, Nadia Barbero, Simone Galliano, Valentina GIANOTTI

Risultato della ricerca: Contributo su rivistaArticolo in rivistapeer review

Abstract

Low-cost photoactive hybrid materials for light management, based on neutral organic molecules intercalated into saponite, were prepared by facile green methods and characterized. TPBI (2-(2'-tosylaminophenyl)benzimidazole) was chosen as an organic host dye, envisioning its application as a downconverter in silicon or dye-sensitized photovoltaic modules. Mixed with a cationic surfactant, the neutral molecule was intercalated with a sort of "trojan horse" approach by an easy, almost solvent-free method, thus limiting its aggregation. The obtained material was characterized by combining spectroscopic, diffractometric, and microscopic techniques. Moreover, the intercalation of the dye, the species present in the interlayer, their stability and mutual interactions were assessed by TGA-GC-MS. We obtained a material containing a fluorescent dye in the solid state and stabilized by intercalation and dispersion into saponite. At last, this material was used to prepare a photoactive polymer by melt blending, obtaining materials with the desired optical properties, with Stokes shifts larger than 100 nm and an emission yield above 50%.
Lingua originaleInglese
RivistaChemNanoMat
Volume9
Numero di pubblicazione8
DOI
Stato di pubblicazionePubblicato - 2023

Keywords

  • Clays
  • Green chemistry
  • Light management
  • Organic-inorganic hybrid composites
  • TGA-GC-MS

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