Containers soft-template

In addition to the above-mentioned soft templates, soup bubbles have been also used as templates to fabricate CPCs. PPy microcontainers with bowl-, cup-, and bottle-like morphologies have been electrochemically generated by direct oxidation of pyrrole in an aqueous solution of /3-naphthalenesulfonic acid (/3-NSA), first reported by Shi et al. [79-82]. The bubbles were produced by the decomposition of water. The gas bubbles and the aqueous solution containing the monomer and /3-NSA led to the formation of soap... 

The first reported procedures for the preparation of mesoporous sihca nanofibers by means of BCP soft templates inside hard templates were adaptations of synthetic strategies introduced by Stucky and coworkers [159]. Both tubular and soHd entities with a mesoporous fine structure can thus be prepared. In their pioneering work, Yang et aL filled sols containing Pluronic... 

One of the few reports on the preparation of mesoporous sihca nanofibers with a soft template other than triblock copolymers of the Pluronic type deals with the synthesis of sihca nanofibers with high aspect ratios containing linear arrays of mesopores by a solution-induced self-assembly process (Fig. 23), as previously reported for thin-film configurations [184]. To this end, PS-fo-PEO diblock copolymers were employed as structure-directing agents in sol solutions containing toluene/ethanol mixtures. For a Dp-value of 35 nm, a single line of mesopores formed, for a Dp-value of 60 nm two parallel rows of mesopores were obtained [185]. 

Fig. 23 TEM image of released sUica nanowires containing a single row of mesocages obtained with PS(9500)-fc-PEO(9500) as the soft template and an AAO hard template (Dp = 35 nm). Reproduced from [185]. (2007) Wiley-VCH...

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