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《含5,5-二氧化-二苯并噻吩單元的聚對(duì)苯撐乙烯衍生物的合成與發(fā)光性能研究》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、上海交通大學(xué)博出學(xué)位論文SYNTHESISANDLUMINESCENTPROPERTIESOFPOLY(p—PHENYLENEVINYLENE)DERIVATIVESCONTAININGDIBENZOTHIOP戳NE-5，5-DIOXIDEMOIETVABSTRACTlnordertobalancechargeinjectionfrombothcathodeandanodeintopoly(p-phenylenevinylene)(PPv)，aseriesofnovelPPVderivativescontainingdibenzothiopheno-5，5一dioxidemoi
2、etywithhigherelectronaffinity(EA)weredesignedandsynthesized，andtheirelectricalandopticalpropertieswerecharacterizedinthisdissertation．Anovelmonomer2,8-dibromomethyl-dibenzothiophene-5，5-dioxidefA)WaSdesigned，synthesizedandcharaetarizedbyIR，MS，’Hand’屯NMRspectra，andelementalanalysis．Aseriesofc
3、onjugatedoligomersDD-PPVsweresynthesizedbyreactingthenovelmonomerwitho-phthaldehyde．Ⅲ-phthaldehydeandp-phthaldehydethroughtheWittigreaction．TheDD-PPVsweresolubleinDMF,DMSOandNMP．TheglaSstransitiontempera舢res(T≯ofDD妒PPVDD-m*PPVandDD--o-PPVwere234。8℃，203．2℃and189．3℃。respectively,andthetemperat
4、uresat5％weightlosswere416"C，409"Cand423℃，respectively．TheUuVisabsorbancepeaksofDD-p-PPV,DD-m·PPVandDD-o-PPVappearedat369nm，292nmand284nm，respectively,inDMF．Thephotoluminascence(PL)peaksofDDppPvtDD-m-PPVandDD-o-PPVpresented8t457nm，432nmand451nminDMF,at487nm，452nmand460nminfilm。respectively．Th
5、eEAofDD-p-PPVwas-3．17eV,O．54eVhigherthanPPV．Asingle-layerlightemittingdiode(LED)withtheconfiguratlonofIT0／DD-p-PPV／AIshowedarleleetroluminescence(EL)peakat500nmwithaturn-onvoltageofabout12eV．InordertoimprovethesolubilityofDD-PPV,aseriesofphthaldehydewithlongalkoxysidegroupsweresynthesizedand
6、characterizedbyIR，MS，‘HNMRspectra，andelementalanalysis．AseriesofconjugatedoligomersDDMA-PPVswe≈synthesizedbyreactingmonomerAwiththephthaldehydeswithlongalkoxythroughtheWittigreaction．TheDDMA—PPVsweresolubleinIll摘要CHCl3。THFandxylane．TheTEofDDMB-PPv'DDMH-PPVandDDMN—PPVwere117"C，140℃and114"C，re
7、spectively,andthetemperaturesat5％weightlossofDDMB-PPv，DDMH-PPVandDDMN-PPVwere420"(2．431℃and402"C．respectively．AlltheUv-VisabsorbancepeaksofDDMA—PPVsinCHCl3appearedat416nm．ThePLpeaksofDDMB·PPV,DDMH—PPVandDDMN—PPVpresentedat506nm，509rimand494nminCHCl
