| Effect of Solvent Annealing Temperature on Crystal Modifications and Phase Transition Behavior of Regioregular Poly（3-octylthiophene） |
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| 引用本文： | 张建明.Effect of Solvent Annealing Temperature on Crystal Modifications and Phase Transition Behavior of Regioregular Poly（3-octylthiophene）[J].高分子科学,2014,32(9):1158-1166. |
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| 作者姓名： | 张建明 |
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| 作者单位： | Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plastics, Qingdao University of Science & Technology, Qingdao 266042, China |
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| 基金项目： | This work was financially supported by the Taishan Mountain Scholar Constructive Engineering Foundation （No. TS20081120） and Natural Science Fund for Distinguished Young Scholars of Shandong Province （No. JQ200905）. |
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| 摘 要： | In present study, the effect of the solvent annealing temperature on the crystal modifications and the phase transition behavior of the subsequently dried poly（3-octylthiophene） （P3OT） film has been investigated by the combination of DSC, WAXD and FTIR techniques. When chloroform is employed as the solvent, it is unexpectedly found that form I and form II crystal modifications of P3OT could be respectively obtained by room temperature and low temperature annealing. Comparing to the mostly used solvent reported for preparing form II, i.e. carbon disulfide （CS2） which is toxic and corrosive, chloroform is less toxic and corrosive and more suitable for solution processing of P3OT. Therefore, this finding provides an alternative way to obtain form II. By temperature dependent IR spectroscopy, the structural evolution of P3OT during the form II to form I phase transition process has also been studied in detail.
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| 关 键 词： | 相变行为 退火温度 溶剂 噻吩 辛基 修改 晶体 广角X射线衍射 |
Effect of solvent annealing temperature on crystal modifications and phase transition behavior of regioregular poly(3-octylthiophene) |
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| Xiao-jun Wang,Yuan Yuan,Li-li Han,Xia Dong,Jian-ming Zhang.Effect of solvent annealing temperature on crystal modifications and phase transition behavior of regioregular poly(3-octylthiophene)[J].Chinese Journal of Polymer Science,2014,32(9):1158-1166. |
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| Authors: | Xiao-jun Wang Yuan Yuan Li-li Han Xia Dong Jian-ming Zhang |
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| Institution: | 1. Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plastics, Qingdao University of Science & Technology, Qingdao, 266042, China
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| Abstract: | In present study, the effect of the solvent annealing temperature on the crystal modifications and the phase transition behavior of the subsequently dried poly(3-octylthiophene) (P3OT) film has been investigated by the combination of DSC, WAXD and FTIR techniques. When chloroform is employed as the solvent, it is unexpectedly found that form I and form II crystal modifications of P3OT could be respectively obtained by room temperature and low temperature annealing. Comparing to the mostly used solvent reported for preparing form II, i.e. carbon disulfide (CS2) which is toxic and corrosive, chloroform is less toxic and corrosive and more suitable for solution processing of P3OT. Therefore, this finding provides an alternative way to obtain form II. By temperature dependent IR spectroscopy, the structural evolution of P3OT during the form II to form I phase transition process has also been studied in detail. |
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| Keywords: | P3OT Crystal modification FTIR |
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