Tetrablock Metallopolymer Electrochromes

Angew Chem Int Ed Engl. 2018 Feb 19;57(8):2204-2208. doi: 10.1002/anie.201712945. Epub 2018 Jan 24.


Multi-block polymers are highly desirable for their addressable functions that are both unique and complementary among the blocks. With metal-containing polymers, the goal is even more challenging insofar as the metal properties may considerably extend the materials functions to sensing, catalysis, interaction with metal nanoparticles, and electro- or photochrome switching. Ring-opening metathesis polymerization (ROMP) has become available for the formation of living polymers using highly efficient initiators such as the 3rd generation Grubbs catalyst [RuCl2 (NHC)(=CHPh)(3-Br-C5 H4 N)2 ], 1. Among the 24 possibilities to introduce 4 blocks of metallopolymers into a tetrablock metallocopolymer by ROMP using the catalyst 1, two viable pathways are disclosed. The synthesis, characterization, electrochemistry, electron-transfer chemistry, and remarkable electrochromic properties of these new nanomaterials are presented.

Keywords: copolymers; electrochromicity; electron transfer; metallocenes; redox activity.

Publication types

  • Research Support, Non-U.S. Gov't