Hybrid organic-inorganic POSS dendritic materials: photoluminescence chromophore control via confinement and steric hindrance

P. André; G. Cheng; A. Ruseckas; D. J. Cole-Hamilton; I. D. W. Samuel

doi:10.1117/12.826220

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20 August 2009 Hybrid organic-inorganic POSS dendritic materials: photoluminescence chromophore control via confinement and steric hindrance

P. André, G. Cheng, A. Ruseckas, D. J. Cole-Hamilton, I. D. W. Samuel

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Proceedings Volume 7396, Physical Chemistry of Interfaces and Nanomaterials VIII; 73960B (2009) https://doi.org/10.1117/12.826220
Event: SPIE NanoScience + Engineering, 2009, San Diego, California, United States

Abstract

An inorganic silsesquioxane and organic 4-vinyl biphenyl chromophore based dendrimer was synthesized and the steric hindrance of the dendrons was used as a trigger to control the photophysical properties in the near-UV and blue spectral ranges. Consistent photoluminescence quantum yields and time resolved fluorescence were measured in solution, confirming that molecular engineering of the dendrons together with confinement around the inorganic core allows the design of more efficient photoluminescent dendrimers. Low temperature photoluminescent studies were completed to demonstrate the stability of the dendrimer photophysical properties. A very general strategy is then presented which uses stable chemistry to control the emission spectral range by changing the chromophore, and gives control of photoluminescence efficiency by grafting side-groups onto the chromophores.

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P. André, G. Cheng, A. Ruseckas, D. J. Cole-Hamilton, and I. D. W. Samuel "Hybrid organic-inorganic POSS dendritic materials: photoluminescence chromophore control via confinement and steric hindrance", Proc. SPIE 7396, Physical Chemistry of Interfaces and Nanomaterials VIII, 73960B (20 August 2009); https://doi.org/10.1117/12.826220

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