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Technologies 2018, 6(2), 51; https://doi.org/10.3390/technologies6020051

Morphology Control of Nanocrystallized C60 Thin Films Prepared by Poor Solvent Immersion

1
Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
2
Research Center for Organic Electronics (ROEL), Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
*
Author to whom correspondence should be addressed.
Received: 2 May 2018 / Revised: 15 May 2018 / Accepted: 18 May 2018 / Published: 20 May 2018
(This article belongs to the Special Issue Smart Systems)
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Abstract

Nanocrystallized C60 thin films of such as hexagonal, plate-like, and rod-like morphologies were recrystallized by poor solvent immersion, employing 1-propanol, 2-propanol, and butanol respectively. A C60 thin film fabricated by evaporation was immersed in the poor solvent, partially dissolving the surface C60. This was followed by the solvent rapidly reaching a supersaturated state, resulting in the induced recrystallization of the C60. C60 fine high-density crystals were successfully prepared using propanol, with crystal sizes varying between 84 and 141 nm by changing the immersion time. In addition, due to the 1-propanol recrystallizing solvated crystals which were formed through interactions between the solvent and the C60, uniform C60 fine crystals were obtained by the formation of a large number of nucleation sites. View Full-Text
Keywords: C60; thin film; recrystallization; solvent immersion; morphology control; solvated crystal C60; thin film; recrystallization; solvent immersion; morphology control; solvated crystal
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Umemoto, K.; Takeda, M.; Tezuka, Y.; Doi, M.; Lyu, B.; Masuhara, A. Morphology Control of Nanocrystallized C60 Thin Films Prepared by Poor Solvent Immersion. Technologies 2018, 6, 51.

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