Green and
Blue Electrochromic Polymers from Processable Siloxane Precursors
Ki-Ryong Lee
Gregory A. Sotzing
10.1021/cm401498f.s001
https://acs.figshare.com/articles/journal_contribution/Green_and_Blue_Electrochromic_Polymers_from_Processable_Siloxane_Precursors/2393680
Herein
we report the synthesis of a new class of processable siloxane precursor
polymers consisting of aromatic groups and flexible siloxane linkages
and their conversions to green and blue electrochromic polymers in
the solid state. 3,4-Ethylenedioxythiophene (EDOT), 2,2′-bis(3,4-ethylenedioxythiophene)
(BiEDOT), and a donor–acceptor moiety 4,7-bis(EDOT)-2,1,3-benzothiadiazole
(BEBTD) were incorporated as aromatic groups to demonstrate the versatility
of the precursor method to different aromatic systems. The utilization
of a siloxane linkage allows for a precursor polymer exhibiting improved
solubility in common organic solvents and accessible glass transition
temperatures (−1 to 132 °C) as compared to a previously
reported silane precursor. A simple method to control the thermal
properties of the precursor was also demonstrated by incorporation
of both siloxane and silane functionalities into the precursor backbone.
The oxidatively converted product from the precursors showed electronic
and optoelectronic properties comparable to the conjugated polymer
prepared by conventional electrochemical polymerization of monomers
in an electrolyte bath. In addition to the dark-blue to sky-blue electrochromic
PEDOT from EDOT and BiEDOT, a dual-band absorbing green to sky-blue
electrochromic polymer was demonstrated using BEBTD. This demonstrates
that the precursor approach is easily applicable and feasible for
the preparation of conjugated polymers from numerable electrochemically
polymerizable aromatic groups.
2013-07-23 00:00:00
Processable Siloxane PrecursorsHerein
electrochemical polymerization
processable siloxane precursor polymers
optoelectronic properties
siloxane linkage
precursor approach
Blue Electrochromic Polymers
electrochromic polymers
PEDOT
electrolyte bath
numerable electrochemically polymerizable
siloxane linkages
silane functionalities
precursor backbone
precursor method
silane precursor
EDOT
BEBTD
precursor polymer