Impact of alkyl side chains on thin-film transistor performances in phenanthrodithiophene-isoindigo copolymers

Shuhei Nishinaga; Hiroki Mori; Yasushi Nishihara

doi:10.1246/cl.150357

Impact of alkyl side chains on thin-film transistor performances in phenanthrodithiophene-isoindigo copolymers

Shuhei Nishinaga, Hiroki Mori, Yasushi Nishihara

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

12 Citations (Scopus)

Abstract

Organic field-effect transistor (OFET) characteristics of phenanthrodithiophene (PDT)-isoindigo (IID) copolymers with different alkyl chains (12OD and BOBO) as an active layer, and their structure-property relationships are described. The fabricated 12OD-based OFET device exhibited hole mobility of 0.16 cm² V^-1 s^-1. Grazing-incidence wide-angle X-ray scattering (GIWAXS) analysis revealed that 12OD formed highly ordered edge-on structure, whereas the BOBO film showed amorphous-like structure with no obvious π-stacking crystallites. This may be attributed to a large steric hindrance of branched side chains in the BOBO polymer, which suppresses effective π-π overlaps between the adjacent polymer backbones.

Original language	English
Pages (from-to)	998-1000
Number of pages	3
Journal	Chemistry Letters
Volume	44
Issue number	7
DOIs	https://doi.org/10.1246/cl.150357
Publication status	Published - 2015

ASJC Scopus subject areas

Chemistry(all)

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title = "Impact of alkyl side chains on thin-film transistor performances in phenanthrodithiophene-isoindigo copolymers",

abstract = "Organic field-effect transistor (OFET) characteristics of phenanthrodithiophene (PDT)-isoindigo (IID) copolymers with different alkyl chains (12OD and BOBO) as an active layer, and their structure-property relationships are described. The fabricated 12OD-based OFET device exhibited hole mobility of 0.16 cm2 V-1 s-1. Grazing-incidence wide-angle X-ray scattering (GIWAXS) analysis revealed that 12OD formed highly ordered edge-on structure, whereas the BOBO film showed amorphous-like structure with no obvious π-stacking crystallites. This may be attributed to a large steric hindrance of branched side chains in the BOBO polymer, which suppresses effective π-π overlaps between the adjacent polymer backbones.",

author = "Shuhei Nishinaga and Hiroki Mori and Yasushi Nishihara",

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T1 - Impact of alkyl side chains on thin-film transistor performances in phenanthrodithiophene-isoindigo copolymers

AU - Nishinaga, Shuhei

AU - Mori, Hiroki

AU - Nishihara, Yasushi

PY - 2015

Y1 - 2015

N2 - Organic field-effect transistor (OFET) characteristics of phenanthrodithiophene (PDT)-isoindigo (IID) copolymers with different alkyl chains (12OD and BOBO) as an active layer, and their structure-property relationships are described. The fabricated 12OD-based OFET device exhibited hole mobility of 0.16 cm2 V-1 s-1. Grazing-incidence wide-angle X-ray scattering (GIWAXS) analysis revealed that 12OD formed highly ordered edge-on structure, whereas the BOBO film showed amorphous-like structure with no obvious π-stacking crystallites. This may be attributed to a large steric hindrance of branched side chains in the BOBO polymer, which suppresses effective π-π overlaps between the adjacent polymer backbones.

AB - Organic field-effect transistor (OFET) characteristics of phenanthrodithiophene (PDT)-isoindigo (IID) copolymers with different alkyl chains (12OD and BOBO) as an active layer, and their structure-property relationships are described. The fabricated 12OD-based OFET device exhibited hole mobility of 0.16 cm2 V-1 s-1. Grazing-incidence wide-angle X-ray scattering (GIWAXS) analysis revealed that 12OD formed highly ordered edge-on structure, whereas the BOBO film showed amorphous-like structure with no obvious π-stacking crystallites. This may be attributed to a large steric hindrance of branched side chains in the BOBO polymer, which suppresses effective π-π overlaps between the adjacent polymer backbones.

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Impact of alkyl side chains on thin-film transistor performances in phenanthrodithiophene-isoindigo copolymers

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