Polymer synthesis is one of the most fascinating fields in the application of flow microreactors.
Living cationic polymerization and anionic polymerization have been successfully achieved based on intrinsic
advantages of flow microreactors stemming from characteristic features of micro space and flow reaction
systems such as fast mixing, fast heat transfer, and precise residence time control. This presentation provides a
brief outline of polymer synthesis using flow microreactors with emphasis on controllability of polymerization.
In this work well-characterized [(dppf)PdBr(R)]-type complexes [dppf: 1,10-bis(diphenylphosphino)ferrocene] were employed in combination with silver triflate to yield active Pd catalysts for the polymerization of acetylenes substituted with a polar group. The introduction of the R groups in the monosubstituted polyacetylene chains was supported by MALDI-TOF mass spectrometry.
The novel metallo-supramolecular polymers were successfully synthesized via complexation of metal ions [ Cu(II), Pt(IV)] with new fluorine derivatized bis-1,10-phenanthroline ligand. This new polymer was characterized by UV-titration and AFM image. AFM proves that single long strands were formed in Cu(II) and Pt(IV) polymers. In addition, we revealed electrochemical behavior of Cu(II) polymer and electrochemical & photochromic properties of Pt(IV) polymer.
Junction of dissimilar semiconductors is a hot issue in organic electronics. One remaining challenge would be to tailor a linear organic heterojunction at the nanoscale by dissimilar semiconducting molecular architectures precisely. Here we report the first success of this interesting example. A semiconducting organic heterojunction, consisting of electronically dissimilar graphite-like nanotubular segments, is formed by stepwise coassembly of two different molecular graphenes, and shows possible electronic communication over the heterojunction interface
Aromatic amine-based reactive moieties were introduced into precursor polymer side chains by click postfunctionalization using Cu(I)-catalyzed azide-alkyne cycloaddition. Red and green colored polymers were obtained by the subsequent addition reactions of tetracyanoethylene (TCNE) and 7,7,8,8-tetracyanoquinodimethane (TCNQ), respectively. Blue colored polymer was finally obtained by applying a positive voltage, resulting in aminium cationic radicals.