三階非線性光學(xué)材料—聚酰亞胺的微波輻射合成及其成膜性研究

1、蘇州大學(xué)碩士學(xué)位論文三階非線性光學(xué)材料—聚酰亞胺的微波輻射合成及其成膜性研究姓名：唐秀波申請學(xué)位級別：碩士專業(yè)：應(yīng)用化學(xué)指導(dǎo)教師：路建美2002.5.1三墮笪些絲堂堂塑型二型墅里墮墮墼叢塑盟魚些些!!些壁絲業(yè)!!—————————————————!墮呈二ABSTRACTPyromelliticdianhydride(PMDA)andSodiumtetrazodiphenyl—naphthionate(STDN)，1，4diaminoan

2、thmquinone(DAAQ)andBenzoguanamine(BGA)asaromaticdiamineswereselectedtObepolymerizedundermicrowaveirradimionTheeffectsofthereactiontemperature，theconcentrationofmonomers，themonomersratio，andthemicrowaveirradiationtime(ene

3、rgy)ontheintrinsicviscosityandtheconversionwereinvestigatedThethird—ordernonlinearoptical(NLO)coefficientandtheresponsetimeofthepolycondensatesweredetectedbythedegeneratedfourwavemixing(DFWM)techniqueTheresultsshowthatth

4、epolycondensateshaveexcellentNLOproperties(x(孫maxofPI147610。”esu，thefastestresponsetimeofPIis1579ps)QuantumcalculationsofthemolecularenergygapandenergybandwereperformedbytheCrsytal98softpackage，SOtherelationbetweenthethi

5、rd—orderNLOpropertyandthemoleculestructurewasinterpretedintheoryModificationofthepolycondensatesthroughcopolymerizationandgraftingwerecarriedoutundermicrowaveirradiationThesolubilityofthepolymerswasimprovedThefilmsofthem

6、odifiedpolymerswereobtainedbyspinning—coatmethodTheresultshowedthefilmformingpropertiesofthepolymerswasimprovedaftermodifiedThethird—orderoftheNLOpropertiesofthepolymersolutionsandthefilmsweredetectedb)’DFWMtechniqueThet