Design of organically functionalised hybrid silica fibres through the use of anthracenic organogelatorsElectronic supplementary information (ESI) available: SEM images of other non-calcined/unwashed hybrid samples prepared using DDOA (non-hydrolytic conditions) and DAP organogelators (Fig. S1); additional SEM images of calcined/washed organosilicas (Fig. S2); 29Si MAS NMR spectra of samples A and B (Fig. S3). See http://www.rsc.org/suppdata/jm/b2/b212465n/