Spatially Ordered Poly(3-hexylthiophene) Fibril Nanostructures via Controlled Evaporative Self-Assembly

Woon Ik Park; Dong Hyun Kim; Jaehan Jung; Suck Won Hong; Zhiqun Lin; Myunghwan Byun

doi:10.1002/admt.201800554

Spatially Ordered Poly(3-hexylthiophene) Fibril Nanostructures via Controlled Evaporative Self-Assembly

Woon Ik Park, Dong Hyun Kim, Jaehan Jung, Suck Won Hong, Zhiqun Lin, Myunghwan Byun

Department of Chemistry & Nanoscience

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

Hierarchically structured, gradient concentric rings of regioregular conjugated polymer, rr-poly(3-hexylthiophene) (rr-P3HT) with randomly or directionally crystallized nanofibrils over large areas are obtained by regulating consecutive “stick-slip” motions of the three-phase contact line in a confined geometry consisting of an upper curved sphere surface and a lower flat Si substrate (i.e., sphere-on-flat geometry), which leads to an axially symmetric capillary-bridge (bound solution). Self-organized concentric P3HT ring patterns result from mediating intermolecular interactions between the polymer molecules, and varying the solvent concentration. More interestingly, from the lower solution concentration “shish-kebab” like morphologies are observed in between adjacent rings. These unusual, directionally crystallized structures are formed spontaneously parallel to the moving direction of the contact line on solvent evaporation. Subsequently, I–V characteristics of the directionally crystallized and randomly distributed P3HT nanofibrils formed across the electrodes are investigated and compared.

Original language	English
Article number	1800554
Journal	Advanced Materials Technologies
Volume	4
Issue number	1
DOIs	https://doi.org/10.1002/admt.201800554
State	Published - Jan 2019

Bibliographical note

Funding Information:
W.I.P and D.-H.K contributed equally to this work. Z.L. and M.B. conceived the experiments. W.I.P., D.H.K., and M.B. performed the whole experiments. All authors contributed to the discussion and to the writing of the paper. This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT, and Future Planning (NRF-2015R1C1A1A01053111). This article is part of the special series on Advanced Intelligent Systems that showcases the outstanding achievements of leading international researchers on intelligent systems.

Publisher Copyright:
© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Keywords

controlled evaporative self-assembly
gradient concentric rings
regioregular conjugated polymer
sphere-on-flat geometry
stick-slip

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10.1002/admt.201800554

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title = "Spatially Ordered Poly(3-hexylthiophene) Fibril Nanostructures via Controlled Evaporative Self-Assembly",

abstract = "Hierarchically structured, gradient concentric rings of regioregular conjugated polymer, rr-poly(3-hexylthiophene) (rr-P3HT) with randomly or directionally crystallized nanofibrils over large areas are obtained by regulating consecutive “stick-slip” motions of the three-phase contact line in a confined geometry consisting of an upper curved sphere surface and a lower flat Si substrate (i.e., sphere-on-flat geometry), which leads to an axially symmetric capillary-bridge (bound solution). Self-organized concentric P3HT ring patterns result from mediating intermolecular interactions between the polymer molecules, and varying the solvent concentration. More interestingly, from the lower solution concentration “shish-kebab” like morphologies are observed in between adjacent rings. These unusual, directionally crystallized structures are formed spontaneously parallel to the moving direction of the contact line on solvent evaporation. Subsequently, I–V characteristics of the directionally crystallized and randomly distributed P3HT nanofibrils formed across the electrodes are investigated and compared.",

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author = "Park, {Woon Ik} and Kim, {Dong Hyun} and Jaehan Jung and Hong, {Suck Won} and Zhiqun Lin and Myunghwan Byun",

note = "Funding Information: W.I.P and D.-H.K contributed equally to this work. Z.L. and M.B. conceived the experiments. W.I.P., D.H.K., and M.B. performed the whole experiments. All authors contributed to the discussion and to the writing of the paper. This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT, and Future Planning (NRF-2015R1C1A1A01053111). This article is part of the special series on Advanced Intelligent Systems that showcases the outstanding achievements of leading international researchers on intelligent systems. Publisher Copyright: {\textcopyright} 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",

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Spatially Ordered Poly(3-hexylthiophene) Fibril Nanostructures via Controlled Evaporative Self-Assembly

Abstract

Bibliographical note

Keywords

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