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Macroscopic Domains within an Oriented TQ1 Film Visualized Using 2D Polarization Imaging

Täuber, Daniela LU ; Cai, Wanzhu; Inganäs, Olle and Scheblykin, Ivan G. LU (2017) In ACS Omega 2(1). p.32-40
Abstract

Large-area self-assembly of functional conjugated polymers holds a great potential for practical applications of organic electronic devices. We obtained well-aligned films of poly[2,3-bis(3-octyloxyphenyl)quinoxaline-5,8-diyl-alt-thiophene-2,5-diyl] (TQ1) using the floating film transfer method. Thereby, a droplet of the TQ1 solution was injected on top of the surface of an immiscible liquid substrate, at the meniscus formed at the edge of a Petri dish, from where the polymer solution and the film spread in one direction. Characterization of the TQ1 film using the recently developed two-dimensional polarization imaging (2D POLIM) revealed large, millimeter-sized domains of oriented polymer chains. The irregular shape of the contact line... (More)

Large-area self-assembly of functional conjugated polymers holds a great potential for practical applications of organic electronic devices. We obtained well-aligned films of poly[2,3-bis(3-octyloxyphenyl)quinoxaline-5,8-diyl-alt-thiophene-2,5-diyl] (TQ1) using the floating film transfer method. Thereby, a droplet of the TQ1 solution was injected on top of the surface of an immiscible liquid substrate, at the meniscus formed at the edge of a Petri dish, from where the polymer solution and the film spread in one direction. Characterization of the TQ1 film using the recently developed two-dimensional polarization imaging (2D POLIM) revealed large, millimeter-sized domains of oriented polymer chains. The irregular shape of the contact line at the droplet source induced the appearance of disordered stripes perpendicular to the spreading direction. A correlation of polarization parameters measured using 2D POLIM revealed the microstructure of such stripes, providing valuable information for further improvement and possible upscaling of this promising method.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
ACS Omega
volume
2
issue
1
pages
9 pages
publisher
American Chemical Society (ACS)
external identifiers
  • scopus:85028920695
  • wos:000395862400004
ISSN
2470-1343
DOI
10.1021/acsomega.6b00264
language
English
LU publication?
yes
id
f2174fe5-74d5-4666-bc4e-39cc6a48cbfc
date added to LUP
2017-09-27 13:24:39
date last changed
2018-01-16 13:27:14
@article{f2174fe5-74d5-4666-bc4e-39cc6a48cbfc,
  abstract     = {<p>Large-area self-assembly of functional conjugated polymers holds a great potential for practical applications of organic electronic devices. We obtained well-aligned films of poly[2,3-bis(3-octyloxyphenyl)quinoxaline-5,8-diyl-alt-thiophene-2,5-diyl] (TQ1) using the floating film transfer method. Thereby, a droplet of the TQ1 solution was injected on top of the surface of an immiscible liquid substrate, at the meniscus formed at the edge of a Petri dish, from where the polymer solution and the film spread in one direction. Characterization of the TQ1 film using the recently developed two-dimensional polarization imaging (2D POLIM) revealed large, millimeter-sized domains of oriented polymer chains. The irregular shape of the contact line at the droplet source induced the appearance of disordered stripes perpendicular to the spreading direction. A correlation of polarization parameters measured using 2D POLIM revealed the microstructure of such stripes, providing valuable information for further improvement and possible upscaling of this promising method.</p>},
  author       = {Täuber, Daniela and Cai, Wanzhu and Inganäs, Olle and Scheblykin, Ivan G.},
  issn         = {2470-1343},
  language     = {eng},
  month        = {01},
  number       = {1},
  pages        = {32--40},
  publisher    = {American Chemical Society (ACS)},
  series       = {ACS Omega},
  title        = {Macroscopic Domains within an Oriented TQ1 Film Visualized Using 2D Polarization Imaging},
  url          = {http://dx.doi.org/10.1021/acsomega.6b00264},
  volume       = {2},
  year         = {2017},
}