In the nanoscale world, a variety of different effects can either compete or supplement each other, affecting both the structure and properties of a system. The corresponding methods are a great tool and can lead to promising enhanced or novel materials yet the combination of multiple techniques remains a challenge.Poly(p-xylylene) (PPX) nanotubes have been shown to physically trap large poly(amidoamine) (PAMAM) dendrimers, allowing for site-isolated catalysis. The dendrimers can easily be functionalized and subsequently equipped with the desired catalyst. Alternatively, PAMAM can be used to wrap and hence stabilize metal nanoparticles. An alkyne-functionalized PPX on the surface can be used to click on a second catalyst that is otherwise incompatible with the encapsulated one. The result is a versatile �wolf and lamb�-type catalyst system that can be used for one-pot reaction cascades. Figure 1. <img src='https://acs-archive-assets2.s3.amazonaws.com/239nm/uploads/3402_scheme_1.jpg' alt='' />The highly hierarchical hybrid system is incrementally assembled: The electrospinning process of PAMAM together with a polyurethane matrix polymer produces one-dimensional composite template nanofibers. After coating with a separative PPX layer, the alkyne-functionalized PPX is deposited, and the inner template core is extracted. Current studies are investigating the suitability of the prepared anisotropic confinement as a selective nanoreactor.

Multilayer nanoconfinements with encapsulated dendrimers for �wolf and lamb�-type catalysis

246th National Meeting (2013)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.