TY - JOUR
T1 - Broad spectrum absorption and low-voltage electrochromic operation from indacenodithieno[3,2-b]thiophene-based copolymers
AU - Bini, Kim
AU - Murto, Petri
AU - Elmas, Sait
AU - Andersson, Mats R.
AU - Wang, Ergang
PY - 2019/4/28
Y1 - 2019/4/28
N2 - Electrochromic performance of conjugated polymers has quickly become an important design factor in a variety of applications. There is still significant need to develop highly stable materials with high optical contrast, desired colour switching and fast kinetics. Here, poly[indacenodithieno[3,2-b]thiophene-2,8-diyl] (PIDTT) is introduced as a new type of electrochromic polymer exhibiting a narrow absorption band, excellent electrochemical stability and fast colour switching kinetics between vibrant red (peak maximum at ∼550 nm) and transparent (peak maximum at ∼920 nm) within a low potential range of 0-0.8 V. To widen the spectral coverage of the well-functioning PIDTT over the entire visible range, a modified donor-acceptor approach is used by incorporating three different donor-acceptor-donor (DAD) segments into an indacenodithieno[3,2-b]thiophene (IDTT) based polymer backbone, so as to obtain three different alternating copolymers. This design motif is further rationalized by the maintained electrochemical stability of the new copolymers, and their full colour switching between black and transparent down to an ultra-low potential range of 0-0.6 V.
AB - Electrochromic performance of conjugated polymers has quickly become an important design factor in a variety of applications. There is still significant need to develop highly stable materials with high optical contrast, desired colour switching and fast kinetics. Here, poly[indacenodithieno[3,2-b]thiophene-2,8-diyl] (PIDTT) is introduced as a new type of electrochromic polymer exhibiting a narrow absorption band, excellent electrochemical stability and fast colour switching kinetics between vibrant red (peak maximum at ∼550 nm) and transparent (peak maximum at ∼920 nm) within a low potential range of 0-0.8 V. To widen the spectral coverage of the well-functioning PIDTT over the entire visible range, a modified donor-acceptor approach is used by incorporating three different donor-acceptor-donor (DAD) segments into an indacenodithieno[3,2-b]thiophene (IDTT) based polymer backbone, so as to obtain three different alternating copolymers. This design motif is further rationalized by the maintained electrochemical stability of the new copolymers, and their full colour switching between black and transparent down to an ultra-low potential range of 0-0.6 V.
KW - Electrochromic performance
KW - conjugated polymers
KW - poly[indacenodithieno[3,2-b]thiophene-2,8-diyl] (PIDTT)
UR - http://www.scopus.com/inward/record.url?scp=85064500368&partnerID=8YFLogxK
UR - http://purl.org/au-research/grants/ARC/DP160102356
U2 - 10.1039/c8py01787e
DO - 10.1039/c8py01787e
M3 - Article
AN - SCOPUS:85064500368
VL - 10
SP - 2004
EP - 2014
JO - Polymer Chemistry
JF - Polymer Chemistry
SN - 1759-9962
IS - 16
ER -