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An Ultrahigh Mobility in Isomorphic Fluorobenzo[c]-[1,2,5]thiadiazole-Based Polymers

Title
An Ultrahigh Mobility in Isomorphic Fluorobenzo[c]-[1,2,5]thiadiazole-Based Polymers
Authors
Lee, JunghoonKang, So-HueiLee, Sang MyeonLee, Kyu CheolYang, HeesooCho, YongjoonHan, DaeheeLi, YongfangLee, Byoung HoonYang, Changduk
Ewha Authors
이병훈
SCOPUS Author ID
이병훈scopus
Issue Date
2018
Journal Title
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
ISSN
1433-7851JCR Link

1521-3773JCR Link
Citation
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION vol. 57, no. 41, pp. 13629 - 13634
Keywords
cyclopentadithiophenefluoro-benzothiadiazoleorganic field-effect transistorspolymer chemistryregioregularity
Publisher
WILEY-V C H VERLAG GMBH
Indexed
SCI; SCIE; SCOPUS WOS scopus
Document Type
Article
Abstract
To understand the effects rendered on the relevant basic physical properties and device function by controlling the regiochemistry of the cyclopenta[1,2-b:5,4-b'] dithiophene-fluorobenzo[c][1,2,5] thiadiazole polymer (hereafter referred to as the CDT-FBT polymer), two polymers, the regiorandom polymer (RA) and regioregular version (RR), respectively, are synthesized and characterized. In addition, an efficient route for synthesizing a key monomer for RR using various synthesis scope and optimizing the reaction conditions is discussed. Although RA exhibits optical, electrochemical, and morphological properties similar to RR, it shows better field-effect transistor (FET) performance. Surprisingly, by employing a capillarity-mediated sandwich-casting process on a nano-grooved substrate, an unprecedented mobility of 17.8 cm(2) V-1 s(-1) is obtained for RA-based FETs; this mobility value is almost twofold greater than those of the corresponding RR-based FETs. For the first time, this study challenges previously reported results in that high carrier mobility is related to the high degree of polymer order induced by the backbone regioregularity.
DOI
10.1002/anie.201808098
Appears in Collections:
엘텍공과대학 > 화학신소재공학전공 > Journal papers
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