Prediction and Evaluation of Styrenic Block Copolymers as Surface Modifiers for Multiwalled Carbon Nanotubes in α-Terpineol-Based Pastes

Title
Prediction and Evaluation of Styrenic Block Copolymers as Surface Modifiers for Multiwalled Carbon Nanotubes in α-Terpineol-Based Pastes
Authors
홍성철신정은최희정공희현김경곤박남규
Keywords
염료감응형 태양전지; dye-sensitized solar cell
Issue Date
2010-11
Publisher
Industrial & engineering chemistry research
Citation
VOL 49, NO 22, 11393-11401
Abstract
A well-defined styrenic block copolymer was prepared through controlled/“living” radical polymerization technique and evaluated as a polymeric surface modifier for multiwalled carbon nanotube (MWCNT) in R-terpineol-based paste. First, poly(maleic anhydride-co-p-acetoxystyrene)-block-poly(p-acetoxystyrene) copolymer was prepared through a nitroxide-mediated polymerization (NMP) technique in an efficient “onepot” reaction. The copolymer was then functionalized with pyrene through an imidization reaction (SPM). Finally, p-acetoxystyrene units were converted to p-hydroxystyrene units through hydrolysis, affording pyrenefunctionalized poly(maleic acid-co-p-hydroxystyrene)-block-poly(p-hydroxystyrene) (HSPM). Pyrene units in one block afforded efficient attachment points to the surface of MWCNT throughπ π-π interaction, while poly(p-hydroxystyrene) or poly(p-acetoxystyrene) tails afforded enhanced affinities with α-terpineol, as predicted by Hansen solubility parameter theory. Fabrications of electrodes through screen printing procedures employing MWCNT/HSPM or MWCNT/SPM pastes were facilitated through the surface modification of MWCNTs with the block copolymers, as evidenced by low viscosity, more homogeneous and smooth pastes, homogeneous/uniform MWCNT coatings, and low sheet resistance of the electrode.
URI
http://pubs.kist.re.kr/handle/201004/38654
ISSN
0888-5885
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KIST Publication > Article
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