Polyterthiophenes cross-linked with terpyridyl metal complexes for molecular architecture of optically and electrochemically tunable materials
| Autor: | Gordon G. Wallace, Jonathan E. Barnsley, Pawel Wagner, Grzegorz Lisak, Johan Bobacka, Ari Ivaska, Michal Wagner, David L. Officer, Klaudia Wagner, Keith C. Gordon, Andrei Veksha |
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| Přispěvatelé: | School of Civil and Environmental Engineering, Nanyang Environment and Water Research Institute |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
chemistry.chemical_classification
Materials science 02 engineering and technology Polymer 010402 general chemistry 021001 nanoscience & nanotechnology Electrosynthesis Electrochemistry Photochemistry Charge-transfer complex 01 natural sciences Catalysis 0104 chemical sciences Metal Ultraviolet visible spectroscopy chemistry Charge-Transfer Complex visual_art Chemistry [Science] visual_art.visual_art_medium 0210 nano-technology |
| Popis: | Novel conductive polymer-based metal complexes were electrochemically synthesized and characterized in relation to (spectro)electrochemical stimuli. Particularly, we focused our attention on terthiophenes functionalized with terpyridine groups, along with Fe2+ cations present during electrochemical synthesis. The resultant electroactive films are coherent, robust, and exhibit mixed absorption profiles upon electrochemical doping, characteristic for both polyterthiophenes and metal-ligand transitions. At certain oxidation potentials, the formation of radical cation and also dication states were observed. The latter, influence the optical transitions related to metal centers, and can reversibly be everted by switching to lower potentials. Furthermore, the polymer “cross-linking metal” can be removed from the structure, which we obtained by partial exchange of Fe2+ with Cu2+ and Zn2+ cations. The conducted cation exchange studies however elucidate the complexity and difficulty of such an approach. With future electropolymerization “strategies” we are expecting to extend film stability during application of relatively high potentials, as well as in the interim of cation exchange. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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