TY - JOUR
T1 - Acene-containing donor-acceptor conjugated polymers
T2 - Correlation between the structure of donor moiety, charge carrier mobility, and charge transport dynamics in electronic devices
AU - Park, Gi Eun
AU - Shin, Jicheol
AU - Lee, Dae Hee
AU - Lee, Tae Wan
AU - Shim, Hyunseok
AU - Cho, Min Ju
AU - Pyo, Seungmoon
AU - Choi, Dong Hoon
N1 - Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 2014/6/10
Y1 - 2014/6/10
N2 - We synthesized five different donor-acceptor (D-A) conjugated polymers bearing diketopyrrolopyrrole (DPP) acceptors and acene donors in the repeating groups via the Suzuki and Stille coupling methods. To investigate the effect of acene donor moieties on static and dynamic charge transport properties, pyrene, naphthodithiophene, benzodithiophene, dithieno[3,2-b:2′,3′-d] thiophene (DTT), and thieno[3,2-b]thieno[2′,3′:4,5]thieno[2,3-d] thiophene (TTTT) were selected and introduced into the structure of the polymer repeating group. Among the five polymers, the polymer PDPPTTTT bearing TTTT donor units exhibited the highest hole mobility, ∼3.2 cm2 V -1 s-1 (Ion/Ioff > 10 6) in the thin film transistors. The five polymers had different mobilities and exhibited different charge transport dynamic responses. The response was investigated by applying a pulsed bias to thin film transistors loaded with a resistor. The resistor loaded (RL) inverter made of PDPPTTTT operates well, maintaining a fairly high switching voltage ratio at a relatively high frequency. The PDPPTTTT-based RL inverter also had the fastest switching behavior with a relatively small decay time of 1.86 ms. From this study, the structure of the donor moiety in the D-A conjugated polymer was found to strongly affect the optical property, internal morphology of the polymer film, charge carrier mobility, and charge transport dynamics in electronic devices.
AB - We synthesized five different donor-acceptor (D-A) conjugated polymers bearing diketopyrrolopyrrole (DPP) acceptors and acene donors in the repeating groups via the Suzuki and Stille coupling methods. To investigate the effect of acene donor moieties on static and dynamic charge transport properties, pyrene, naphthodithiophene, benzodithiophene, dithieno[3,2-b:2′,3′-d] thiophene (DTT), and thieno[3,2-b]thieno[2′,3′:4,5]thieno[2,3-d] thiophene (TTTT) were selected and introduced into the structure of the polymer repeating group. Among the five polymers, the polymer PDPPTTTT bearing TTTT donor units exhibited the highest hole mobility, ∼3.2 cm2 V -1 s-1 (Ion/Ioff > 10 6) in the thin film transistors. The five polymers had different mobilities and exhibited different charge transport dynamic responses. The response was investigated by applying a pulsed bias to thin film transistors loaded with a resistor. The resistor loaded (RL) inverter made of PDPPTTTT operates well, maintaining a fairly high switching voltage ratio at a relatively high frequency. The PDPPTTTT-based RL inverter also had the fastest switching behavior with a relatively small decay time of 1.86 ms. From this study, the structure of the donor moiety in the D-A conjugated polymer was found to strongly affect the optical property, internal morphology of the polymer film, charge carrier mobility, and charge transport dynamics in electronic devices.
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U2 - 10.1021/ma500733y
DO - 10.1021/ma500733y
M3 - Article
AN - SCOPUS:84902184879
SN - 0024-9297
VL - 47
SP - 3747
EP - 3754
JO - Macromolecules
JF - Macromolecules
IS - 11
ER -