High hole mobility in room temperature discotic liquid crystalline tetrathienoanthracenes

Tetrathienoanthracene (TTA), a new discotic core fragment, is explored that shows a remarkably high hole mobility ( μ h ) of 4.22 cm 2 V −1 s −1 at room temperature when used in space-charge limited current (SCLC) devices. Strong co-facial interactions (π-π, S S) among TTA cores along with a high te...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2020-05, Vol.56 (42), p.5629-5632
Main Authors: Bala, Indu, De, Joydip, Gupta, Santosh Prasad, Singh, Harpreet, Pandey, Upendra Kumar, Pal, Santanu Kumar
Format: Article
Language:English
Subjects:
Carrier mobility
Current carriers
Hole mobility
Liquid crystals
Mesophase
Room temperature
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Summary:Tetrathienoanthracene (TTA), a new discotic core fragment, is explored that shows a remarkably high hole mobility ( μ h ) of 4.22 cm 2 V −1 s −1 at room temperature when used in space-charge limited current (SCLC) devices. Strong co-facial interactions (π-π, S S) among TTA cores along with a high tendency of the derivative to align homeotropically in the columnar mesophase over a large area in SCLC cells contributed to the top-class charge carrier mobility. Tetrathienoanthracene (TTA), a new discotic core fragment, is explored that shows a remarkably high hole mobility ( μ h ) of 4.22 cm 2 V −1 s −1 at room temperature when used in space-charge limited current (SCLC) devices.
ISSN:1359-7345
1364-548X
DOI:10.1039/d0cc01226b