synthesis and characterization of poly(3-hexylthiophene)-b-polystyrene for photovoltaic application合成和表征聚(3-hexylthiophene)-b-polystyrene光伏应用程序.pdf

Polymers 2011, 3, 558-570; doi:10.3390/polym3010558 OPEN ACCESS polymers ISSN 2073-4360 /journal/polymers Article Synthesis and Characterization of Poly(3-hexylthiophene)-b-Polystyrene for Photovoltaic Application Zhijie Gu, Ying Tan, Kousuke Tsuchiya, Takeshi Shimomura and Kenji Ogino * Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei-shi, Tokyo 184-8588, Japan; E-Mails: 50008701105@st.tuat.ac.jp (Z.G.); 50009701109@st.tuat.ac.jp (Y.T.); ktsuchiy@cc.tuat.ac.jp (K.T.); simo@cc.tuat.ac.jp (T.S.) * Author to whom correspondence should be addressed; E-Mail: kogino@cc.tuat.ac.jp; Tel.: +81-42-388-7404; Fax: +81-42-388-7404. Received: 10 January 2011; in revisedform: 12 February 2011 / Accepted: 24 February 2011 / Published: 1 March 2011 Abstract: Poly(3-hexylthiophene)-block-polystyrene (P3HT-b-PS) was synthesized by Suzuki coupling reaction between P3HT and PS, prepared by Grignard metathesis polymerization and atom transfer radical polymerization (ATRP), respectively. The formation of block copolymer was confirmed by gel permeation chromatography (GPC) and NMR. Differential scanning calorimetry (DSC) thermogram of block copolymers showed glass transition of PS block and melting/crystallization of P3HT block, suggesting a microphase separated structure, which was also confirmed by atomic force microscopy (AFM) images and UV-vis absorption spectra. The annealing effect on the morphology of the composite films consisting