新型silole與咔唑及窄帶隙單體共聚物的合成與性能研究.pdf

1、華南理工大學碩士學位論文新型silole與咔唑及窄帶隙單體共聚物的合成與性能研究姓名：王妍申請學位級別：碩士專業(yè)：材料學指導教師：曹鏞20050501坐直型三盔堂堡主堂焦逢塞AbstractSiloIesorsiIacyclopentadienesareagroupoffive—memberedsilacyclicsthatpossessauniquelow—lyingLUMOlevelassociatedwiththea7【’COnj

2、ugationarisingfromtheinteractionbetweentheo’orbitaloftwoexocyclicobondsonthesiliconatomandthe7I’orbital0fthebutadienemoietySilolesexhibithighelectronacceptabilityandfastelectronmobility2，3，4，5Tetraphenylsil01esanditsderi

3、versshownovelfluorescentcharacteristicsinsolidstateduetotheaggregation—inducedemissionphenomenaThussilolescanbeutilizedaspromisingelectrontransportingandlightemittingmaterialsinOLEDsCarbazolebasedpolymersappearedtobenota

4、blewidebandgaplightemittingmaterialsinPLEDswhichprocessgoodholetransportingabilityandopticalpropertiesEmissioncolorofcopolymerscanbetunedandfluorescentefficiencycanbeimprovedbyincorporatingnarrowgapcomonomersintopolycarb

5、az01ebackboneIntroducingcomonomerswithhighelectronaffinityintothecarbazole—basedcopolymersisapromisingapproachtopursuingefficientsingle—layerPLED，sincethecopolymerscontainbothholeandelectronaffinityunitsIntroducingsilole

6、intothemainchainofpolycarbazolewouldgivenewcopolymerswithadvantagesoftheholeaffinityfromcarbazoleandtheelectronaffinityandhighlyemissiveabilityfromsiloleTothebestofourknowledge，therewereneportsoncopolymersderivedfromsilo

7、leandcarbazoleInthispaper，wesynthesizedanovelseriesofsolubleconjugatedrandomandalternatingcopolymersderivedfromN—hexyl一3，6carbazoleand1，1dimethyl一2，3，4，5tetraphenylsiloleusingSuzukicouplingreactionsTheopticalandelectroni

8、cpropertiessuchasUVabsorptionelectrochemicalproperties，photoluminescence，electroluminescence，andfieldeffecttransistorpropertiesofthecopolymerswereevaluatedTheelectrochemicalbehaviorsofthecopolymerswereinvestigatedbycycli

9、cvoltammetry(CV)TheHUMOlevelsofthecopolymersarebetween一534eVand一510eVandLUMOlevelsbetween一266eVand282eVThePLandELspectrademonstratethestrongintraandintermolecularenergytransfersfromcarbazoleunitstosiloleunitsWithhighersi