無機-有機復合膜的制備及光致變色性能研究.pdf

1、大連海事大學碩士學位論文無機有機復合膜的制備及光致變色性能研究姓名：倪麗麗申請學位級別：碩士專業(yè)：環(huán)境科學與工程指導教師：馮威20090601英文摘要ABSTRACTPhotochromiccompositematerialswithgoodlightsensitivityandextensiveapplicationsarebeingpaidmoreandmoreattentionsPolyoxometalatesbecomeprom

2、isingcandidatesbecauseoftheirintriguingcapabilityforreversiblemultivalencereductionformingmixedvalencespecies，whichmakesthemsuitableforphotochromicandelectrochromicmaterialsInordertealizepracticalapplicationinthetechlolo

3、西calfields，theconsiderableattentionhasbeenfocusedonthestudyofpolyoxometalatesnanoparticlesdispersedintopolymericnetworkstoobtaintransparentnanocompositesthinfilmsInthispapertwocrosslinkedpolymerswerepreparedbasedonNvinyl

4、pyrrolidoneandN’Nmethylenebisacrylamide，Nvinylpyrrolidone(vv)andbisvinylA(aVA)respectivelyAndtheywereused弱pdymermatrixtoconstructnovelphotochromicnanocompositethinfilms、聃mentrappingtheKeggintypepolyoxometalatesAlso，aphot

5、ochromicnanocompositethinfilmWaspreparedbasedonpolyacrylarnide(PAM)andKeggintypemolybdenurnphsophoricacid(PMoA)AllthefilmsshowedgoodstructureandphotochromiccharacterThemainresultsareoutlinedasfollowing：Acrosslinkedpolyme

6、r(P(VPMB))waspreparedbasedonNvinylpyrrolidoneandN，Nmethylenebisacrylamide，theKegginstructureheteropolyacid0OM)m仁W，Mo)isintroducedintotheP(VPMB)polymernetworkUnderultravioletlightthecompositefdmchangefromcolorlessintotheb

7、lue，heteropolyacidhasbeendeoxidizedtoheteropolybulesThewholereductionisinaccordancewinlthemechanismofthechargetransferThebleachingprocessofthecompositefilmst00kplaceinairComparedwithPWA／P(VPMB)film，PMoA／P(VPMB)filmshowed

8、quickerresponseunderUVandlowerblearningprocessAerosslinkedpolymerP(VP—BVA)waspreparedbasedonNvinylpyrrolidoneandbi趼inylA(BVA)，theKegginstructureheteropolyacid(POM)(M=WMo)isintroducedintotheP(VPBVA)polymernetworkUnderultr