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normalizing the C1s peaks to the same height for both samples in
their XPS spectra, we can find that the contents of O1s, N1s and I3d
elements for MWCNT-poly(AMImI) are much higher than those for
expected MWCNT-poly(AMBImI), which also supported their TGA
results.
Finally, all the MWCNT samples were dispersed in the PMII ionic
liquid, which is often used as a non-volatile solvent for dye-
sensitized solar cells (DSSC) due to its low viscosity [35]. After
standing for a week, the pristine MWCNT in PMII tended to
aggregate and adhere on the wall of the vial as revealed by the
photograph shown in Fig. 9. Interestingly, both MWCNT-
poly(AMImI) and expected MWCNT-poly(AMBImI) showed well
dispersed in PMII (1 mg MWCNT in 3 mL PMII). Because MWCNT
has superior electric conductivity, we expect that MWCNT-
poly(AMImI) and expected MWCNT-poly(AMBImI) would have
a great potential to apply for ionic liquid-based DSSC to enhance the
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Number average molecular weights of poly(AMImI) and poly
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3383 g/mol as estimated by TGA data. Based on the TGA and HR-TEM
analysis, MWCNT-poly(AMBImI) can not be fabricated through
ATRP. Instead, MWCNTeBr physisorbed a thin layer of AMBImI
invalidating the initiation capability of MWCNTeBr.
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Acknowledgment
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[37] Lin PY. Applications of polymerizable ionic liquid and its carbon nanotube
composites on electrolytes for dye-sensitized solar cells. National Taiwan
University, Master Thesis, 2010.
The authors acknowledge the financial support of the National
Science Council in Taiwan, Republic of China, through Grant NSC
96-2221-E-002-144-MY3.
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