Synthesis and near infrared electrochromic properties of metallodithiolene complexes |
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| Authors: | Xiuhong Chen Wenqiang Qiao Bo Liu Juntao Ren Zhiyuan Wang |
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| Institution: | 1.State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun,China;2.University of Chinese Academy of Sciences,Beijing,China;3.Department of Chemistry,Carleton University,Ottawa,Canada |
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| Abstract: | Four metallodithiolene complexes 4,8-bis(octyloxy)-1,3,5,7-tetrathia]·di1,1′-bis(diphenylphosphino)ferrocene·palladium(II)] (3), 4,8-bis(octyloxy)-1,3,5,7-tetrathia]di1,3-bis(diphenylphosphino)propane·nickel(II)] (4), 4,8-bis(octyloxy)-1,3,5,7-tetrathia] ·1,1′-bis(diphenylphosphino)ferrocene·palladium(II)]·1,3-bis(diphenylphosphino)propane·nickel(II)] (5) and di4,8-bis (octyloxy)-1,3,5,7-tetrathia]·1,1′-bis(diphenylphosphino)ferrocene·palladium(II)]·nickel(II) (6) were synthesized and the near-infrared (NIR) electrochromic properties were studied. The spectroelectrochemical spectra and the electrochromic parameters such as optical contrast, switching time, optical density change, electrochromic efficiency and optical attenuation of complexes 3–6 were investigated in detail. The symmetric binuclear complex 4 showed relatively high electrochromic efficiency of 63.0 and 75.4 cm2/C both in the two oxidation states. The complexes exhibited excellent electroactive/electrochromic stability characterized by chronoamperometry (>4000 cyclic switches). |
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