Conjugated polymers

Conjugated polymers are organic macromolecules that are characterized by a backbone chain of alternating double- and single-bonds. Their overlapping p-orbitals create a system of delocalised π-electrons, which can result in interesting and useful optical and electronic properties.

Latest Research and Reviews

  • Research |

    We demonstrated the synthesis of fluorescent network polymers through Knoevenagel polycondensation of an (tris(p-formylphenyl)amine) with a phenylenediacetonitrile. The structure based on the electron-donor triphenylamine and electron-acceptor cyano-substituted phenylene-vinylene showed a highly efficient solid-state fluorescence. The model molecule showed a well-defined solvatofluorochromism. Surprisingly, the network polymer linked with para-phenylene-vinylene was only responsive to the solvents with a low dielectric constant and nitrobenzene. The network polymer linked with meta-phenylene-vinylene was responsive to the aromatic solvents only. The characteristic chemoselectivity was observed by the geometric effect of the network structure.

    • Shotaro Hayashi
    • , Shin-ichi Yamamoto
    • , Koji Nishi
    • , Atsushi Asano
    •  & Toshio Koizumi
  • Research | | open

    Semiconducting covalent organic frameworks (COF) with conjugated structures are desired for optoelectric conversion but poor reversibility of bond forming reactions hampers the formation of crystalline structures. Here, the authors synthesise COFs with disubstituted C = C linkages which enable water splitting under visible light irradiation.

    • Shuai Bi
    • , Can Yang
    • , Wenbei Zhang
    • , Junsong Xu
    • , Lingmei Liu
    • , Dongqing Wu
    • , Xinchen Wang
    • , Yu Han
    • , Qifeng Liang
    •  & Fan Zhang
  • Research | | open

    Conjugated polymers are of interest for photothermal applications; however, synthesis of these polymers can be complex. Here, the authors report on a facile synthesis method that uses a modified CBT-Cys click reaction to make conjugated polymers and test these polymers for photothermal therapy applications.

    • Peiyao Chen
    • , Yinchu Ma
    • , Zhen Zheng
    • , Chengfan Wu
    • , Yucai Wang
    •  & Gaolin Liang
  • Research | | open

    Though designing conductive polymers for memory devices is attractive for future low-cost flexible electronics, a proof-of-concept device has yet to be realized. Here, the authors report a redox-gated polymer memristive processing unit with programmable multilevel storage and logic functionalities.

    • Bin Zhang
    • , Fei Fan
    • , Wuhong Xue
    • , Gang Liu
    • , Yubin Fu
    • , Xiaodong Zhuang
    • , Xiao-Hong Xu
    • , Junwei Gu
    • , Run-Wei Li
    •  & Yu Chen
  • Research |

    A monomer molecular dopant with high electron affinity is shown to accept up to two electrons from conjugated polymers with low ionization efficiency and then generate free charge carriers with an efficiency of up to 170%.

    • David Kiefer
    • , Renee Kroon
    • , Anna I. Hofmann
    • , Hengda Sun
    • , Xianjie Liu
    • , Alexander Giovannitti
    • , Dominik Stegerer
    • , Alexander Cano
    • , Jonna Hynynen
    • , Liyang Yu
    • , Yadong Zhang
    • , Dingqi Nai
    • , Thomas F. Harrelson
    • , Michael Sommer
    • , Adam J. Moulé
    • , Martijn Kemerink
    • , Seth R. Marder
    • , Iain McCulloch
    • , Mats Fahlman
    • , Simone Fabiano
    •  & Christian Müller
    Nature Materials 18, 149-155
  • Research |

    We studied the surface functionalization of PP by dip-coating with a maleic anhydride-grafted chlorinated polypropylene (MPO) /methacrylate-based terpolymer mixture. A methacrylate-based terpolymer (PMFP) was synthesized, which contained perfluoroalkyl (Rf)-conjugated monomers and poly(ethylene glycol)-conjugated monomers. We found that the presence of MPO aided the adhesion of the terpolymer to the PP surface and that the coated PP surface exhibited low protein-fouling properties. In addition, the dip-coating of a terpolymer containing reactive groups (–COOH) with MPO caused the reactive groups to be presented at an outermost surface.

    • Manami Hara
    • , Shigeru Kitahata
    • , Keisuke Nishimori
    • , Koki Miyahara
    • , Kenta Morita
    • , Kaya Tokuda
    • , Takashi Nishino
    •  & Tatsuo Maruyama
    Polymer Journal 51, 489-499

News and Comment