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1、50Macromol.Symp.2007,249–250,50–55DOI:10.1002/masy.200750308SolidStatePhotoluminescencePropertyofaNovelPOSS-BasedMaterialHavingCarbazole1,2211IchiroImae,*YusukeKawakami,YousukeOoyama,YutakaHarimaSummary:Octakis[2-carbazol-9-yl]ethyldimethylsiloxy]silsesqui
2、oxane(POSS-Cz)wasnewlysynthesizedanditsphotoluminescencepropertiesinbothsolutionandsolidstateswereinvestigated.POSS-Czshowedmonomericemissionpeaknotonlyinsolutionstatebutalsoinsolidstate.Thisresultsuggeststhattheintroductionofoctasilsesquioxanecorewillsupp
3、resstheaggregationofcarbazoleeveninsolidstate.Keywords:amorphous;luminescence;morphology;oligomers;silsesquioxaneIntroductionExperimentalPartPolyhedraloligomericsilsesquioxanes(POSSs)SynthesisofOctakis[2-(carbazol-9-yl)arewell-knownasnovelbuildingblocksfor
4、ethyldimethylsiloxy]silsesquioxane[1]inorganic-organichybridmaterials.POSSs(POSS-Cz)canhaveanorganicsubstituentsoneachToasolutionofoctakis(dimethylsiloxy)sil-siliconatomatthecornerofthecore,whichsesquioxane0.92g(0.9mmol)and9-vinyl-isdirectedradially,andthe
5、ircoreisbasedcarbazole1.96g(10mmol)indrytolueneoninsulatingsiloxanebond.Thus,when(10mL)wasaddedasolutionofplatinum-photo-andelectroactivechromophoresaredivinyltetramethyldisiloxanecomplexinintroducedastheorganicsubstitutentsonxylene(2%Pt,50mL).Afterbeingst
6、irred1siliconatom,thesechromophoresareexpec-untilthesignalascribedtoSiHinHNMRtedtobeisolatedfromeachotherbybothspectrumwasdisappeared,thesolventofstericandelectroniceffects.Theisolationthemixturewasevaporated,andresultingofthechromophoreswillsolvethepro-vi
7、scousbrown-coloredliquidwaspurifiedblemsduetotheiraggregationinsolidstatebyreprecipitationfromtoluenesolutioncausedbyp-pinteractions,suchascrystal-(6mL)ton-hexane(120mL)togivewhitelizationandformationofexcimers.However,solid.Then,thewhitesolidwasfurtherther
8、earefewreportsontheintroductionofpurifiedbysilica-gelcolumnchromatogra-photo-andelectroactivechromophoresasphy(WakogelC-300,eluent¼toluene/thesubstitutentonsiliconatomofPOSS.n-hexane(2/1))andpreparativesize-ex
