Cover: Multicompartment materials with hierarchical structures can be prepared by colloid-electrospinning. The image shows a superposition of one stimulated emission depletion (STED) microscopy image and several colored micrographs of nanofibers with polymer and silica nanoparticles. Further details can be found in the article by D. Crespy,* K. Friedemann, and A.-M. Popa* on page 1978.

Colloid-electrospinning allows the formation of hierarchically nanostructured materials. Multicompartment nanofibers are formed by electrospinning nanoparticles, microgels, or emulsions. Such materials find applications in drug delivery, photonics, and catalysis.

The anion or solvent stimuli responsiveness of imidazolium-based copolymers arises from dramatic solubility variations among particular anion–imidazolium ion pairs. These ion pairs can be tuned from solvophilic to solvophobic through anion exchange, and reversible poration, condensation, and stabilization are examples of concomitant properties.

A nanofibrous hydrogel is produced via the biological conjugation of biotin-terminated star poly(ethylene glycol) and streptavidin-functionalized hyaluronic acid. Vascular endothelial growth factor (VEGF) is entrapped in low-molecular-weight heparin/N,N,N-trimethylchitosan chloride nanoparticles by affinity interactions.

Olefin cross-metathesis (CM) enables an efficient side-chain functionalization of polymers having terminal alkenes as pendant groups. Acrylates and cis-2-butene-1,4-diacetate are used as CM partners to introduce a variety of functional groups. The scope and limitations of this polymer functionalization technique are discussed.

A well-defined post-functionalizable block copolymer, poly(furfuryl isocyanate)-b-poly (hexyl isocyanate) (PFIC-b-PHIC), is synthesized via living anionic polymerization. In addition, a very simple approach to produce highly arranged C60 involving the self-assembly behavior of the block copolymer is presented.

A new strategy to fabricate nanostructured P3HT films for organic solar cells by employing reusable soft replica molds is presented. With a UV-curable PFPE mold, P3HT nanopillars as well as P3HT nanocavity structures are obtained by exploiting the self-replication of replica molds. The method demonstrates the possibility to reproducibly prepare well-defined ordered bulk hetero-junction OPVs using reusable PFPE molds.

A simple and efficient method to prepare thermosensitive graft polyhydroxyalkaoate (PHA) is presented. Terminal amino groups of Jeffamine are turned into thiol groups by a reaction with N-acetylhomocysteine. Subsequent grafting of ω-thiol Jeffamine on unsaturated PHA is achieved via photoinduced thiol-ene addition, leading to amphiphilic copolymers.

Vinyl carbonates exhibit low toxicity together with good mechanical properties, which qualifies them to be a potential alternative to state-of-the-art (meth)acrylates. A drawback of a certain class of them containing easily abstractable hydrogens is their moderate reactivity. With the help of thiol-ene polymerization, we are able to improve the reactivity enormously up to the level of acrylates.