Incorporation of perylene into inorganic-organic hybrids film was investigated for possible photoluminescent materials’ application.  Octosilicate, a layered alkaline silicate, was modified with a cationic surfactant, dioleyldimethylammonium ion, to accommodate perylene molecularly.  Motivated by the success of the use of dioleyldimethylammonium to modify the surface of a clay, dioleyldimethylammonium was ion exchanged with sodium ion of octosilicate to obtain dioleyldimethylammonium-octosilicate.  The perylene-doped dioleyldimethylammonium-octosilicate films were fabricated by casting the toluene solution of perylene with dispersed dioleyldimethylammonium-octosilicate on substrates (glass and Teflon).  The films (both supported and free-standing) were characterized by XRD, UV-Vis, SEM in addition to photoluminescence characteristics of perylene-doped films.  The excellent dispersion of perylene was achieved by the incorporation in the inorganic-organic hybrids films, proving by the near-unity photoluminescence quantum efficiency (ΦE).

Molecular dispersion of perylene in layered silicate-surfactant hybrids

ACS Spring Meeting 2021

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