synthesis of diblock copolymer consisting of poly(4-butyltriphenylamine) and morphological control in photovoltaic application合成diblock共聚物组成的聚(4-butyltriphenylamine)和形态控制光伏应用程序.pdf

Polymers 2011, 3, 1051-1064; doi:10.3390/polym3031051 OPEN ACCESS polymers ISSN 2073-4360 /journal/polymers Article Synthesis of Diblock Copolymer Consisting of Poly(4-butyltriphenylamine) and Morphological Control in Photovoltaic Application Kousuke Tsuchiya *, Tatsuro Kikuchi, Malee Songeun, 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: 50005253014@st.tuat.ac.jp (T.K.); 50008253505@st.tuat.ac.jp (M.S.); simo@cc.tuat.ac.jp (T.S.) * Authors to whom correspondence should be addressed; E-Mails: ktsuchiy@cc.tuat.ac.jp (K.T.); kogino@cc.tuat.ac.jp (K.O.); Tel.: +81-42-388-7404; Fax: +81-42-388-7404. Received: 23 May 2011; in revised form: 8 June 2011 / Accepted: 28 June 2011 / Published: 1 July 2011 Abstract: The diblock copolymer PTPA-b-PS consisting of poly(4-butyltripheneylamine) (PTPA) and polystyrene was prepared by atom transfer radical polymerization followed by C–N coupling polymerization. Three types of block copolymers with different contents of polystyrene segment were prepared. The formation of block copolymer was confirmed by 1H NMR spectra and gel permeation chromatography (GPC) profiles. Time of flight (TOF) measurement revealed that the block copolymer showed higher hole mobility up to −4 2 1.3 × 10 cm /Vs compared with PTPA homopolymer. The surface morphology of block copolymer films blended with [6,6]-phenyl-C61-butyric acid methyl ester (