Highly Stable Indacenodithieno[3,2-b]thiophene-Based Donor-Acceptor Copolymers for Hybrid Electrochromic and Energy Storage Applications
Artikel i vetenskaplig tidskrift, 2020

Stable doping of indacenodithieno[3,2-b]thiophene (IDTT) structures enables easy color tuning and significant improvement in the charge storage capacity of electrochromic polymers, making use of their full potential as electrochromic supercapacitors and in other emerging hybrid applications. Here, the IDTT structure is copolymerized with four different donor-acceptor-donor (DAD) units, with subtle changes in their electron-donating and electron-withdrawing characters, so as to obtain four different donor-acceptor copolymers. The polymers attain important form factor requirements for electrochromic supercapacitors: desired switching between achromatic black and transparent states (L*a*b∗ 45.9, -3.1, -4.2/86.7, -2.2, and -2.7 for PIDTT-TBT), high optical contrast (72% for PIDTT-TBzT), and excellent electrochemical redox stability (Ired/Iox ca. 1.0 for PIDTT-EBE). Poly[indacenodithieno[3,2-b]thiophene-2,8-diyl-alt-4,7-bis(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl)-2-(2-hexyldecyl)-2H-benzo[d][1,2,3]triazole-7,7′-diyl] (PIDTT-EBzE) stands out as delivering simultaneously a high contrast (69%) and doping level (>100%) and specific capacitance (260 F g-1). This work introduces IDTT-based polymers as bifunctional electro-optical materials for potential use in color-tailored, color-indicating, and self-regulating smart energy systems.


Petri Henrik Murto

University of Cambridge

Chalmers, Kemi och kemiteknik, Tillämpad kemi

Flinders University

S. Elmas

Flinders University

Ulises Mendez Romero

Chalmers, Kemi och kemiteknik, Tillämpad kemi

Centro de Investigacion en Materiales Avanzados

Yanting Yin

Flinders University

Zewdneh Genene

Chalmers, Kemi och kemiteknik, Tillämpad kemi

Mariza Mone

Chalmers, Kemi och kemiteknik, Tillämpad kemi

Flinders University

G. Andersson

Flinders University

Mats Andersson

Flinders University

Ergang Wang

Zhengzhou University

Chalmers, Kemi och kemiteknik, Tillämpad kemi


00249297 (ISSN) 15205835 (eISSN)

Vol. 53 24 11106-11119


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