ChemInform Abstract: SYNTH. VON ISOPLEXIGENIN B

The First Suspension Polymerization for Preparing Optically Active Microparticles Purely Constructed from Chirally Helical Substituted Polyacetylenes

“…Microparticles (MPs; on μm scale) derived from conjugated polymers [ 1,2 ] have been intensively investigated as multifunctional materials due to their great potential DOI: 10.1002/marc.201400067 applications in areas such as bio-imaging agents, [ 3,4 ] sensors, [ 5 ] drug delivery, [ 6 ] and light-emitting materials. [ 7,8 ] Among the abundance of conjugated polymers, polyfl uorenes, [ 9 ] polypyrroles, [ 10 ] polycarbazoles, [ 11 ] polythiophenes, [ 12 ] and polyanilines [ 13 ] have been successfully prepared in the form of MPs, while substituted acetylenes have regrettably been left behind, [ 14 ] although they are widely recognized as typical conjugated polymers with a relatively long history. Moreover, even the previously prepared MPs consisting of substituted polyacetylenes from our group [ 15,16 ] were all composite ones (vinyl polymers were present) rather than pure microspheric architectures solely constructed from polyacetylene chains.…”

Polycarbazole by chemical oxidative interfacial polymerization: morphology and electrical conductivity based on synthesis conditions

“…In recent years, electroactive conductive polymers have become more important because they can be used as sensor materials, 1 -3 electrochemical transistors, 4 -7 solar cells, 8 optical display devices, 9,10 etc. The most widely studied conductive polymers are polyaniline, polypyrrole and polythiophene.…”

“…The conductivity of PCB has been shown to be more than 10 −3 S cm −1 , and it can be synthesized by either electrochemical or chemical polymerization methods. 8,11 Recently, investigations of PCB synthesis by both electrochemical and chemical methods have been carried out. 12 -17 Furthermore, the chemical synthesis method of PCB has been of interest because it is the most feasible route for large-scale production.…”

“…It has been successfully used to synthesize three-dimensional hollow microspheres of PCB. 8 Moreover, the surfactant-assisted chemical route is of particular interest because it can generate surfactant templates of various shapes which can be removed after polymerization. 8 PCB spheres have been successfully synthesized via a hydrothermal method 19 where polyvinylpyrrolidone was used as the template.…”

Helical Polymer Particles Derived from Aromatic Acetylenics and Prepared by Suspension Polymerization

“…For acetylenic polymers, in particular aromatic acetylenic polymers, it is still a big challenge to prepare their particles.As far as acetylenic polymer-based particles are concerned, the most intriguing feature lies in the polymer chains possessing conjugated structures, largely different from the vinyl polymer counterparts. Just like other conjugated polymers, for instance, polyfl uorenes, [ 13 ] polypyrroles, [ 14 ] polycarbazoles, [ 15 ] polythiophenes, [ 16 ] and polyanilines, [ 17 ] acetylenic-based polymer particles have wide potential applications in such signifi cant areas like sensors, [18][19][20] probes, [ 21 ] bio-imaging agents, [ 22 ] and lightemitting materials. [ 23,24 ] As a typical category of conjugated polymers, substituted polyacetylenes [25][26][27][28][29][30][31][32][33][34] are particularly expected to fi nd signifi cant practical applications in diverse areas ranging from materials science [ 35 ] to medical and biological fi elds.…”