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Sonocrystallization of Poly(3-hexylthiophene) in a Marginal Solvent

Abstract

The application of ultrasonication to P3HT in anisole can dramatically affect the crystallization of P3HT. The ultrasonication condition was modulated by varying the ultrasonication time, ultrasonication power and ultrasonication temperature. Ultrasonicating at dissolution temperature (85 °C) causes the concentration of the P3HT solution to fluctuate. When fixing ultrasonication power as 100 W and ultrasonication time as 3 min, for P3HT crystallized in solution at 16 oC, the crystallization kinetics of ultrasonicated P3HT is slower than that of pristine P3HT. The nanofiber aggregation density and crystallinity of ultrasonicated P3HT is lower than that of pristine P3HT, and the nanofiber aggregation size is larger. For P3HT crystallized in solution at 20 °C, the crystallization kinetics, nanofiber morphology and crystallinity of the ultrasonicated P3HT are similar to those of pristine P3HT. For P3HT crystallized in solution at 26 °C, the crystallization kinetics of ultrasonicated P3HT is faster than that of pristine P3HT, the nanofiber aggregation size is larger, and the crystallinity is higher. Fixed the crystallization temperature at 16 oC, varying the ultrasonication time and ultrasonication power can effectively modulate the crystallization kinetics of P3HT. When the P3HT solution is ultrasonicated at crystallization temperature (16 °C), in addition to fluctuations in the concentration, ultrasonication promotes the disentanglement of P3HT chains. The combination the two effects of ultrasonication are more beneficial for the crystallization of P3HT when the solvophobic forces exist in a marginal solvent.

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Publication details

The article was received on 19 Jan 2018, accepted on 29 Mar 2018 and first published on 04 Apr 2018


Article type: Paper
DOI: 10.1039/C8SM00142A
Citation: Soft Matter, 2018, Accepted Manuscript
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    Sonocrystallization of Poly(3-hexylthiophene) in a Marginal Solvent

    X. Zhang, Y. Liu, X. Ma, H. Deng, Y. Zheng, F. Liu, J. Zhou, L. Li and H. Huo, Soft Matter, 2018, Accepted Manuscript , DOI: 10.1039/C8SM00142A

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