Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 4, Issue 16, Pages 3621-3627Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6tc00499g
Keywords
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Funding
- National Natural Science Foundation of China [91222203, 91233205, 51303185, 21473222]
- Ministry of Science and Technology of China [2011CB808405, 2011CB932304, 2013CB933500, 2013CB933504, 2014CB643600]
- Chinese Academy of Sciences [XDB12030300, XDB12010400]
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We report here a systematic study of the solid-state packing, optoelectronic properties and organic field-effect transistor properties of three isomeric 2,6-di-pyridyl anthracene derivatives (1a, 1b and 1c). Very different solid-state physicochemical behaviours were found as a result of the subtle change in the substitution site, especially in the solid-state emission and charge transport properties. For 1a and 1b, which adopted H-like aggregates in the solid state, a bright blue emission with fluorescent quantum efficiencies (Phi(F)) of 50.2 and 17.5% and thin film mobilities of 0.05 and 10(-5) cm(2) V-1 s(-1), respectively, were obtained. The inferior mobility of 1b might be caused by the larger torsion and herringbone angle in the solid-state packing. A green emission with FF of 16% was obtained for single crystals of 1c. No charge transport property was observed for 1c, which might be related to the unfavourable solid-state packing and poor film morphology.
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