A systematic study of the electrochromic (EC) behavior of electropolymerized poly[M(salen)] films (M = Ni, Cu, and Pd) was performed by spectroelectrochemistry. Color contrast between oxidized and reduced states, stability under square wave potential cycling, coloration efficiency, and switching rate were evaluated. Five polymers were selected to assemble solid-state EC cells in a symmetrical configuration (electrode/poly[M(salen)] film/opaque electrolyte/poly[M(salen)] film/electrode). The best EC performance was found for poly[Pd(3-Mesalen)], poly[1], with 38% of initial diffuse reflectance variation and loss of 50% after 6769 cycles. (C) 2010 The Electrochemical Society. [DOI: 10.1149/1.3457474] All rights reserved.
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Branco, Aida Pinheiro, Carlos Fonseca, Joana Tedim, Joao Carneiro, Andrea Jorge Parola, A. Freire, Cristina Pina, Fernando
Pina, Fernando/C-8161-2011; Freire, Cristina/F-4775-2010; Parola, A. Jorge/F-4048-2010; Caparica, cqfb_staff/H-2611-2013; Tedim, Joao/H-9053-2013; REQUIMTE, AL/H-9106-2013; Chaves, Pedro/K-1288-2013
Parola, A. Jorge/0000-0002-1333-9076;
FCT, Portugal [PTDC/QUI/67786/2006]; FCT
The work was partially funded by FCT, Portugal, project Ref PTDC/QUI/67786/2006. J.F. thanks FCT for a fellowship.
Electrochemical soc inc
Pennington