Fluorene Based Conjugated Polyelectrolyte/Silica Nanocomposites: Charge-Mediated Phase Aggregation at the Organic-Inorganic Interface

resumo

Polyfluorene based conjugated polyelectrolyte/silica nanocomposites are fabricated using sol-gel processing. Ionic termination groups on the conjugated polyelectrolyte lateral chains are shown to control the interaction at the inorganic-organic interface, leading to macroscale homogeneity and nanophase separation in a single material. The extent of nanophase separation is determined by the nature of the ionic groups, which may provide a means of controlling donor-acceptor distances in hybrid systems.

palavras-chave

CHEMICAL SENSORS; TNT CHEMOSENSORS; AQUEOUS-SOLUTION; ENERGY-TRANSFER; POLYMER-FILMS; SILICA; COMPOSITES; HYBRIDS; PHOTOPHYSICS; POLYFLUORENE

categoria

Chemistry; Science & Technology - Other Topics; Materials Science; Physics

autores

Evans, RC; Macedo, AG; Pradhan, S; Scherf, U; Carlos, LD; Burrows, HD

nossos autores

agradecimentos

R.C.E thanks FCT for a Postdoctoral Fellowship (SFRH/BPD/42450/2007). We thank Isabel Martins and Dr. R. A. S. Ferreira for technical assistance (NMR and PL quantum yields, respectively).

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