Preparation and aggregation effect of a luminescent POSS-based organic/inorganic hybrid nanocomposite

A kind of luminescent POSS-based organic/inorganic hybrid nanocomposite(EMOF-POSS) was prepared by the Pt-catalyzed hydrosilylation reaction of POSS(T8H8) and 2-ethynyl-7-(4-(4-methoxystyryl)styryl)-9, 9-dioctyl- 9H-fluorene(EMOF) with the high photoluminescence quantum efficiency(ΦFL), and its structure and property were characterized by FT-IR, 1H NMR, 13C NMR, TGA, DSC, UV and PL, respectively. The influence of aggregation effects of EMOF and EMOF-POSS on their electronic absorption and luminescent properties were investigated in detail. The results show that the incorporation of POSS effectively restrains the aggregation effect of organic luminescent chromophores and enhances the photoluminescence quantum efficiency of hybrid. Simultaneously, the resultant hybrid shows significantly improved thermal stability.