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Bis(2-oxo-7-azaindolin-3-ylidene)benzodifuran-dione-based donor-acceptor polymers for high-performance n-type field-effect transistors SCIE SCOPUS

Title
Bis(2-oxo-7-azaindolin-3-ylidene)benzodifuran-dione-based donor-acceptor polymers for high-performance n-type field-effect transistors
Authors
Zhang, G.Dai, Y.Song, K.Lee, H.Ge, F.Qiu, L.Cho, K.
Date Issued
2017-03
Publisher
Royal Society of Chemistry
Abstract
Two donor-acceptor (D-A) conjugated polymers, PBABDF-DT and PBABDF-TVT, were synthesized using a strongly electron-deficient unit, (3E,7E)-3,7-bis(6-bromo-1-(4-decyltetradecyl)-2-oxo-7-azaindolin-3-ylidene)benzo[1,2-b:4,5-b��]difuran-2,6(3H,7H)-dione (BABDF) as the acceptor, and dithiophene and (E)-2-(2-(thiophen-2-yl)vinyl)thiophene as the donor units. Both polymers exhibited low LUMO energy levels (��-4.0 eV) for marching with electron transport and displayed excellent n-type charge transport characteristics. The organic field-effect transistors exhibited the highest electron mobilities of 1.86 cm2 V-1 s-1 and 1.56 cm2 V-1 s-1 with high Ion/Ioff ratios of 1.6 �� 106 and 1.0 �� 106 for PBABDF-DT and PBABDF-TVT, respectively. Both polymers had highly uniform polymer nanofibers, orderly lamellar crystalline structures, and close ��-�� stacking distances which all contributed to the high charge carrier mobility. ? The Royal Society of Chemistry.
Keywords
Conjugated polymers; Electron transport properties; Organic field effect transistors; Donor-acceptor polymers; Donor-acceptors; Electron transport; Electron-deficient units; Lamellar crystalline structures; LUMO energy levels; Polymer nanofibers; Transport characteristics; Field effect transistors
URI
https://oasis.postech.ac.kr/handle/2014.oak/50839
DOI
10.1039/c7py00295e
ISSN
1759-9954
Article Type
Article
Citation
Polymer Chemistry, vol. 8, no. 15, page. 2381 - 2389, 2017-03
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조길원CHO, KIL WON
Dept. of Chemical Enginrg
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