Effect of Solvent Annealing Temperature on Crystal Modifications and Phase Transition Behavior of Regioregular Poly(3-octylthiophene)

Xiao-jun Wang; Yuan Yuan; Li-li Han; Xia Dong; Jian-ming Zhang

doi:10.1007/s10118-014-1493-y

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Effect of Solvent Annealing Temperature on Crystal Modifications and Phase Transition Behavior of Regioregular Poly(3-octylthiophene)

Updated：2021-06-21

- Effect of Solvent Annealing Temperature on Crystal Modifications and Phase Transition Behavior of Regioregular Poly(3-octylthiophene)
- Chinese Journal of Polymer Science Vol. 32, Issue 9, Pages: 1158-1166(2014)
- Affiliations：
  
  Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plastics, Qingdao University of Science & Technology, Qingdao 266042, China
- Author bio：
  
  **Jian-ming Zhang (张建明), E-mail: zjm@qust.edu.cn
- Funds：
- DOI：10.1007/s10118-014-1493-y
  CLC：
- Received：13 March 2014，
  
  Revised：2014-04-22，
  
  Accepted：28 April 2014，
  
  Published：2014-09
- Accepted：
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Xiao-jun Wang, Yuan Yuan, Li-li Han, et al. 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.
DOI：

Xiao-jun Wang, Yuan Yuan, Li-li Han, et al. 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. DOI： 10.1007/s10118-014-1493-y.

摘要

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 (CS

) 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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