Synthesis and properties of new electroluminescent materials = 새로운 전기발광 물질의 합성과 물성 측정에 관한 연구

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dc.contributor.advisorKim, Sung-Gak-
dc.contributor.advisor김성각-
dc.contributor.authorKim, Sang-Woo-
dc.contributor.author김상우-
dc.date.accessioned2011-12-13T04:29:41Z-
dc.date.available2011-12-13T04:29:41Z-
dc.date.issued2003-
dc.identifier.urihttp://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=181005&flag=dissertation-
dc.identifier.urihttp://hdl.handle.net/10203/31606-
dc.description학위논문(박사) - 한국과학기술원 : 화학과, 2003.2, [ iv, 104 p. ]-
dc.description.abstractNew EL polymers possessing both hole and electron transporting units in the main chain are synthesized. The polymer prepared by palladium catalyzed Heck reaction of 3,5-bis-(4-bromophenyl)-4-phenyl-[1,2,4]triazole and [4-(2-ethylhexyloxy)-phenyl]-bis-(4’-vinylphenyl)amine show a large weight average molecular weight (Mw) (25,000) and small polydispersity index (PDI) (1.2). The oligomers synthesized by Wittig condensation have $M_w$ of 4,000 and PDI of 1.8. All the polymer and oligomers synthesized exhibit remarkable thermal stability with high decomposition temperature and high $T_g$ as determined by TGA and DSC under nitrogen atmosphere. The EL emission maximum peaks of the materials prepared are in the range of 535nm~560nm corresponding to green~yellowish-green. Among the three hole-blocking/electron transporting moieties, the 1,3,4-oxadiazole unit shows the best electron injection and transporting property. We synthesized a series of bis [N-(p-X-phenyl) salicylaldiminato] zinc(II) and investigated their absorption, photoluminescence (PL) and electroluminescence (EL) properties. The p-substituted ligands Zn complex showed large bathochromic shift in introducing EWG on p-position which cause a lowering of the LUMO energy and blue-shift in EDG substituted complex, compared to unsubstituted ligand Zn complex. The p-substituted ligands Zn complexes result in decrease of electroluminescent efficiency and devices made with these materials have a higher operating voltage compared to device based on unsubstituted ligand Zn complex.eng
dc.languageeng-
dc.publisher한국과학기술원-
dc.subjecthole-transporting-
dc.subjectpolymer-
dc.subjectlight emitting diode (LED)-
dc.subjectelectron-transporting-
dc.subject정공수송 물질-
dc.subject전자수송 물질-
dc.subject고분자-
dc.subject전기발광소자-
dc.titleSynthesis and properties of new electroluminescent materials = 새로운 전기발광 물질의 합성과 물성 측정에 관한 연구-
dc.typeThesis(Ph.D)-
dc.identifier.CNRN181005/325007-
dc.description.department한국과학기술원 : 화학과, -
dc.identifier.uid020005040-
dc.contributor.localauthorKim, Sung-Gak-
dc.contributor.localauthor김성각-
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CH-Theses_Ph.D.(박사논문)
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