Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 21, Issue 47, Pages 17016-17022Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201502184
Keywords
conjugation; diaceno[a,e]pentalenes; field-effect transistors; hole mobility; semiconductors
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Funding
- National Natural Science Foundation of China [21225209, 91427303, 21190032, 91333113]
- 973 Program [2011CB932301, 2012CB932903, 2014CB643502]
- Chinese Academy of Sciences [XDB12010100, XDB12010200]
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Three diaceno[a,e]pentalene analogues with pendant sterically bulky di-tert-butylphenyl groups have been designed and synthesized. With the extension of the conjugated molecular framework, the molecular arrangement is apparently tuned by the balance between the p-extended surface and pendant alkyl or aryl substituents. Theoretical calculations of the morphologies were in good agreement with the experimental results. Ambient-stable field-effect transistors based on dianthraceno[a,e]pentalene (DAP) have been fabricated, which exhibited excellent hole mobilities (up to 6.55 cm(2)V(-1)s(-1)). Thus, this study has shown that diaceno[a,e]pentalenes are stable even with an extraordinarily large pi-surface area, and may thus serve as excellent molecular platforms for further exploring high-performance semi-conducting materials.
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