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Hybrid Organic-Inorganic Photoluminescent POSS Dentritic Materials

We have developed a a general strategy to engineer more efficient photoluminescent hybrid organic-inorganic nanometer scale photoluminescent materials. A series of chromophores altered with bulky groups were grafted on polyhedral oligomeric silsesquioxane cores used as a model of a nanometer scale silicon oxide interface. Photoluminescence quantum yields, steady state and time-resolved solution spectroscopy along with molecular dynamics investigation and electronic structure calculations on a family of this new material are reported highlighting an apparent contrast between free and confined chromophores relevant to the design of more efficient hybrid organic-inorganic nanometer scale photoluminescent materials for sensors and hybrid light emitting diodes.

Example of POSS Dentritic Macromolecules

Vinyl biphenyl POSS Dentritic Macromolecules

Work carried out by:

Pascal André,a‡* Ge Cheng,b‡ Arvydas Ruseckas,a‡ Nicolas Vautravers,b Tanja van Mourik,b Herbert Früchtl,b Joe A. Crayston,b‡ Russell E. Morris,b David Cole-Hamiltonb‡ and Ifor D. W. Samuel1‡

a School of Physics & Astronomy (SUPA), University of St Andrews, Fife, KY16 9SS
b School of Chemistry (EaStChem), University of St Andrews, Fife, KY16 9ST
Organic Semiconductor Centre, St Andrews, Fife, UK KY16 9SS