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Synthesis, solid-state, and charge-transport properties of conjugated polythiophene-S,S-dioxides

Journal of polymer science. Part B, Polymer physics, 2013-01, Vol.51 (1), p.48-56 [Peer Reviewed Journal]

Copyright © 2012 Wiley Periodicals, Inc. ;2014 INIST-CNRS ;ISSN: 0887-6266 ;EISSN: 1099-0488 ;DOI: 10.1002/polb.23167 ;CODEN: JPLPAY

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Title:
Synthesis, solid-state, and charge-transport properties of conjugated polythiophene-S,S-dioxides
Author: Cochran, Justin E. ; Amir, Elizabeth ; Sivanandan, Kulandaivelu ; Ku, Sung-Yu ; Seo, Jung Hwa ; Collins, Brian A. ; Tumbleston, John R. ; Toney, Michael F. ; Ade, Harald ; Hawker, Craig J. ; Chabinyc, Michael L.
Subjects: Applied sciences ; CHEM ; Electrical, magnetic and optical properties ; Electronics ; Exact sciences and technology ; Organic polymers ; Physicochemistry of polymers ; Polymers ; polythiophene ; polythiophene-S ; polythiophene‐S,S‐dioxides ; Properties and characterization ; R&D ; Research & development ; S-dioxides ; semiconducting polymers ; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices ; thin film ; Transistors ; X-ray scattering
Is Part Of: Journal of polymer science. Part B, Polymer physics, 2013-01, Vol.51 (1), p.48-56
Description: An alkylated semiconducting polymer comprising alternating bithiophene‐[all]‐S,S‐dioxide and aromatic monothiophene units in the polymer backbone was synthesized with the intent of modifying the energy gap and lowest unoccupied molecular orbital for use as a stable n‐type semiconductor. Films spun from this semiconducting polymer were characterized utilizing X‐ray scattering, near edge X‐ray absorption fine structure spectroscopy, ultraviolet photoelectron spectroscopy, and thin‐film field effect transistors to determine how oxidation of the thiophene ring systems impacts the structural and electronic properties of the polymer. The thiophene‐S,S‐dioxide polymers have lower optical and electrical band gaps than corresponding thiophene polymers. X‐ray scattering results indicate that the polymers are well ordered with the π–π stacking distances increased by 0.4 Å relative to analogous thiophene polymers. The electrical stability of these polymers is poor in transistors with a drop in the field effect mobility by approximately one order of magnitude upon addition of just 5% of the thiophene‐S,S‐dioxide unit in a copolymer with thiophene. © 2012 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys, 2013 The synthesis of semiconducting polymers with low lying lowest unoccupied molecular orbital levels has drawn much attention owing to the need for stable n‐type polymers. Here, detailed characterization is reported of a thiophene‐S,S‐dioxide polymer that has a lower optical and electrical band gap than the analogous thiophene polymers. This new polymer forms crystalline thin films with slipped stacked packing similar to its oligomers. The impact of the thiophene‐S,S‐dioxide group on electrical performance is presented.
Publisher: Hoboken: Wiley Subscription Services, Inc., A Wiley Company
Language: English
Identifier: ISSN: 0887-6266
EISSN: 1099-0488
DOI: 10.1002/polb.23167
CODEN: JPLPAY
Source: Alma/SFX Local Collection

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Synthesis, solid-state, and charge-transport properties of conjugated polythiophene-S,S-dioxides

Copyright © 2012 Wiley Periodicals, Inc. ;2014 INIST-CNRS ;ISSN: 0887-6266 ;EISSN: 1099-0488 ;DOI: 10.1002/polb.23167 ;CODEN: JPLPAY

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