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Porous silica as host for PEG-supported coumarin molecules

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Abstract

The design of novel organic–inorganic systems made of poly(ethyleneglycol) (PEG)-supported coumarin loaded into porous silica is presented. The hybrid system was obtained by impregnation of a xerogel silica matrix with a PEG-supported coumarin ethanolic solution. The chemical and physical properties of the hybrid systems are evaluated by means of infrared spectroscopy and thermo-gravimetric analysis, and correlated to UV–Vis optical absorption and time-resolved photoluminescence. It was found that the optical properties of the coumarin, which are not affected by the polymeric PEG support, are preserved upon loading into the silica porous support. The hybrid material obtained may represent a tool for drug delivery as the release of the PEG-supported coumarin from the silica xerogel into water media takes place.

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Acknowledgement

C.M. Carbonaro and P.C. Ricci thank the RAS (Regione Autonoma della Sardegna) with a mobility and networking grant for the economic support.

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Authors and Affiliations

  1. Department of Physics, University of Cagliari, Campus of Monserrato, s.p. n° 8 Km 0.700, 09042, Monserrato, Italy

    C. M. Carbonaro & P. C. Ricci

  2. Department of Chemical and Geological Sciences, University of Cagliari, Campus of Monserrato, s.p. n° 8 Km 0.700, 09042, Monserrato, Italy

    M. F. Casula & M. Cubeddu

  3. Department of Life Sciences and Environment, University of Cagliari, Palazzo delle Scienze, Via Ospedale, 72, 09124, Cagliari, Italy

    G. Tocco

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  1. C. M. Carbonaro
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  2. M. F. Casula
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  4. M. Cubeddu
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  5. G. Tocco
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Correspondence to C. M. Carbonaro.

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Carbonaro, C.M., Casula, M.F., Ricci, P.C. et al. Porous silica as host for PEG-supported coumarin molecules. J Mater Sci 48, 6797–6802 (2013). https://doi.org/10.1007/s10853-013-7484-5

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  • DOI: https://doi.org/10.1007/s10853-013-7484-5

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