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dc.contributor.authorWang, Wei-Chihen_US
dc.contributor.authorYeh, Tien-Tienen_US
dc.contributor.authorLiau, Wei-Lungen_US
dc.contributor.authorChen, Jiun-Taien_US
dc.contributor.authorHsu, Chain-Shuen_US
dc.date.accessioned2018-08-21T05:53:33Z-
dc.date.available2018-08-21T05:53:33Z-
dc.date.issued2018-06-01en_US
dc.identifier.issn1566-1199en_US
dc.identifier.urihttp://dx.doi.org/10.1016/j.orgel.2018.02.002en_US
dc.identifier.urihttp://hdl.handle.net/11536/144837-
dc.description.abstractWe synthesize three liquid crystal molecules with angular anthradithiophene (a-ADT) as the core for the application in organic film-effect transistors (OFETs). Thiophene-octyl group and thiophene-dodecyl group are introduced on both sides of the a-ADT core to yield compounds Bis-C8T-a-ADT and Bis-C12T-a-ADT. Moreover, thiophene-dodecyl group is attached to the a-ADT core on one side to yield compound C12T-a-ADT. The synthesized compounds are measured by differential scanning calorimetry (DSC) and polarizing optical microscopy (POM) to determine their mesomorphic properties. Compound Bis-C8T-a-ADT shows nematic and smectic A phases while both compounds Bis-C12T-a-ADT and C12T-a-ADT reveal smectic A phases. The optical and electrochemical properties of the compounds are characterized by UV-vis spectroscopy and cyclic voltammetry (CV). The HOMO levels for Bis-C8T-a-ADT and Bis-C12T-a-ADT are estimated to be -5.27 eV while the HOMO level of C12T-a-ADT is estimated to be -5.34 eV. The low-lying HOMO levels of the molecules indicate their great oxidation stability in OFET devices. The carrier mobilities are observed to increase 10-1000 times using rubbed polyimide (PI), resulting from the better arrangements of the liquid crystal molecules, and excellent carrier mobilities of 1.06 and 1.02 cm(2)/Vs are obtained from compounds Bis-C12T-a-ADT and C12T-a-ADT, respectively.en_US
dc.language.isoen_USen_US
dc.subjectAnthradithiopheneen_US
dc.subjectLiquid crystalen_US
dc.subjectPolyimidesen_US
dc.subjectOrganic field-effect transistorsen_US
dc.titleAnthradithiophene-based liquid crystal molecules: High carrier mobilities enhanced by rubbed polyimides for the application in organic field-effect transistorsen_US
dc.typeArticleen_US
dc.identifier.doi10.1016/j.orgel.2018.02.002en_US
dc.identifier.journalORGANIC ELECTRONICSen_US
dc.citation.volume57en_US
dc.citation.spage82en_US
dc.citation.epage88en_US
dc.contributor.department應用化學系zh_TW
dc.contributor.departmentDepartment of Applied Chemistryen_US
dc.identifier.wosnumberWOS:000429906200012en_US
Appears in Collections:Articles