Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/43600
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dc.titleSYNTHESIS OF CONJUGATED MOLECULES FOR TWO PHOTON ABSORPTION MATERIALS AND N-TYPE ORGANIC FIELD EFFECT TRANSISTORS
dc.contributor.authorSHAO JINJUN
dc.date.accessioned2013-08-31T18:01:44Z
dc.date.available2013-08-31T18:01:44Z
dc.date.issued2013-01-22
dc.identifier.citationSHAO JINJUN (2013-01-22). SYNTHESIS OF CONJUGATED MOLECULES FOR TWO PHOTON ABSORPTION MATERIALS AND N-TYPE ORGANIC FIELD EFFECT TRANSISTORS. ScholarBank@NUS Repository.
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/43600
dc.description.abstractThe overall objective of this thesis was to design and synthesize pi-conjugated molecules for two photon absorption (2PA) materials and organic field effect transistors (OFETs). It was found that octupolar molecules with D-pi-A braches could achieve high 2PA cross section, and molecules with imide groups, CN groups, and imine (=N-, such as pyrazine) moieties could accomplish n-channel semiconductors. Considerable pi-extended conjugated molecules with varied physical and optical properties have been successfully synthesized following above strategies. Firstly, a family of TAT based molecules were synthesized and characterized, and they exhibit high two photon absorption cross section 1620 GM. In the later parts, by introduction of electron withdrawing group to tuning the LUMO energy level, a series of organic semiconductors with lower-LUMO energy level up to -4.21 eV were achieved; thereafter the OFET devices fabricated from their solution processed films exhibited high electron mobility up to 0.056 cm2V-1s-1.
dc.language.isoen
dc.subjectconjugated molecules,Two Photon Absorption, Field Effect Transistors, N-type, imide,
dc.typeThesis
dc.contributor.departmentCHEMISTRY
dc.contributor.supervisorCHI CHUNYAN
dc.description.degreePh.D
dc.description.degreeconferredDOCTOR OF PHILOSOPHY
dc.identifier.isiutNOT_IN_WOS
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