10.1021/acs.cgd.9b00297.s001
Satoshi Watanabe
Satoshi
Watanabe
Ryota Urata
Ryota
Urata
Tetsuya Sato
Tetsuya
Sato
Shintaro Ida
Shintaro
Ida
Masashi Kunitake
Masashi
Kunitake
Single Crystallization of an Organic Semiconductor
in Hydrogel Capillaries for Transferring onto Substrates
American Chemical Society
2019
C 8-BTBT solution
crystal growth
gel capillary crystallization method
agarose gel capillary
C 8-BTBT thienoacene-based
glass capillary
interface
2019-05-10 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Single_Crystallization_of_an_Organic_Semiconductor_in_Hydrogel_Capillaries_for_Transferring_onto_Substrates/8181671
We
propose a single crystallization and transfer technique of organic
semiconductors using a hydrogel capillary (gel capillary crystallization
method). Single crystals of the C8-BTBT thienoacene-based organic
semiconductor were prepared by crystal growth in a glass capillary
filled with C8-BTBT solution in the supersaturated condition. By adjusting
the concentration and temperature, selective nucleation was induced
only at the air/liquid interface in the capillary. From the multiple
nuclei generated at the interface, polycrystalline C8-BTBT formed
near the interface. Subsequent continuous crystal growth in the capillary
allowed the polycrystals to transform to a single crystal, because
crystal growth was regulated along one direction in the capillary.
Single-crystal growth was also induced at the air–liquid interface
in an agarose gel capillary, which was made by piercing with a plastic
sheet, similar to that in the glass capillary. After formation of
a single crystal in the gel capillary, the single crystal was removed
from the capillary and transferred onto a solid substrate by dissolution
of the capillary with NaI solution.