Supplemental data:
Low glass transition temperature polymer
electrolyte prepared from ionic liquid grafted
poly ethylene oxide
Heyi Hua, Wen Yuan*a, Hui Zhaoa, Lanshuo Lub, Zhe Jiaa and Gregory L. Baker§a
a
Department of Chemistry, Michigan State University, East Lansing, USA, 48824.
Tel: 1-517-355-9715; E-mail: [email protected] or [email protected]
b
College of Chemistry, Chemical Engineering and Material Science (CCEMS),
Soochow University, Suzhou, Jiangsu 215123, People’s Republic of China
§
Prof. Gregory L. Baker passed away on Oct. 18. 2012.
Figure S1. gHSQC of polyEPCH with monomer to initiator ratio 500/1
Description: the peak at 44 ppm in 13C spectrum correlated to two separate protons in
1
H NMR, and was assigned to the C in CH2Cl group. The peak at around 70 ppm in
13
C spectrum was assigned tothe C in CH2O group. The peak at 79 ppm in 13C
spectrum was assigned to the C in CHO group. Based on the gHSQC spectrum, the
larger peak in 1H NMR was assigned to four protons including CH2O, CHO, and 1H
from CH2Cl, and the smaller peak was assigned to the other proton left in CH2Cl.
Figure S2. gHSQC of polyGBIMTFSI with monomer to initiator ratio 500/1
Description: The peak at 50 ppm in 13C spectrum was assigned to the C in CH2
tethered to the imidazolium group. Compared to the corresponding peak in polyEPCH,
It was shifted higher about 5 ppm, which was because of the replacement of Cl with a
more electron attracting cationic imidazolium group. In 1H NMR spectrum, the
chemical shift of peaks for the two protons attached to the C at 50 ppm was also
shifted higher, from between 3.5 and 3.7 ppm to 4.0 and 4.4 ppm. The peaks at 67 and
77 ppm in 13C spectrum were assigned to the C in CH2O and CHO respectively.
Figure S3. DSC curves of polyEPCH 100, 200 and 500 and the corresponding
polyGBIMTFSI. From top to bottom, curves are for polyEPCH 100, 200, 500 and
polyGBIMTFSI 100, 200, 500 respectively.
Figure S4. TGA curve of PGBIMTFSI 100 and 500