αβ-二芳基丙烯腈類發(fā)光材料的合成及發(fā)光性質(zhì)的研究的中期報(bào)告

α，β-二芳基丙烯腈類發(fā)光材料的合成及發(fā)光性質(zhì)的研究的中期報(bào)告AbstractInthisreport,wepresentthesynthesisandphotophysicalpropertiesofα,β-diphenylacrylonitrile-basedluminescentmaterials.Thesyntheticstrategyinvolvesthereactionofasubstitutedbenzaldehydewithmalononitriletoformsubstituted2-cyanomethylidene-1,3-indanediones,followedbyreactionwithsubstitutedbenzeneaminestoformthetargetα,β-diphenylacrylonitrile-basedcompounds.ThephotophysicalpropertiesofthesecompoundswereinvestigatedusingUV-Visabsorptionandfluorescencespectroscopy.Preliminaryresultsindicatethatthesynthesizedcompoundsexhibitstrongabsorptioninthevisibleregionandemitfluorescenceintheblue-greenregion.IntroductionLuminescentmaterialshavereceivedmuchattentionduetotheirpotentialapplicationsinnumerousfieldsincludingsensing,imaging,andoptoelectronics.Onegroupofluminescentmaterialsthathasgarneredparticularinterestisα,β-diphenylacrylonitrile-basedcompoundsduetotheiruniquephotophysicalpropertiesandpotentialapplicationsaselectroluminescentmaterials.Inthisstudy,weaimtosynthesizeandcharacterizeaseriesofα,β-diphenylacrylonitrile-basedcompoundsandinvestigatetheirphotophysicalproperties.Thesyntheticstrategyinvolvesthereactionofasubstitutedbenzaldehydewithmalononitriletoformsubstituted2-cyanomethylidene-1,3-indanediones,followedbyreactionwithsubstitutedbenzeneaminestoformthetargetcompounds.ThephotophysicalpropertiesofthesynthesizedcompoundswillbeanalyzedusingUV-Visabsorptionandfluorescencespectroscopy.ExperimentalMaterialsandMethodsAllreagentsandsolventswerepurchasedfromcommercialsourcesandusedwithoutfurtherpurification.ThesyntheticrouteisshowninScheme1.Synthesisofsubstituted2-cyanomethylidene-1,3-indanediones(CompoundsI)Amixtureofsubstitutedbenzaldehyde(1.0mmol),malononitrile(1.2mmol),andpiperidine(0.1mmol)inmethanol(10mL)wasrefluxedfor8hours.Theresultingprecipitatewasfiltered,washedwithmethanol,anddriedundervacuumtoobtainCompoundsI.Synthesisofα,β-diphenylacrylonitrile-basedcompounds(CompoundsII)AmixtureofCompoundsI(0.5mmol),substitutedbenzeneamine(0.5mmol),andaceticacid(0.1mL)inethanol(10mL)wasrefluxedfor12hours.Themixturewascooledtoroomtemperature,andtheresultingproductwasfiltered,washedwithethanol,anddriedundervacuumtoobtainCompoundsII.CharacterizationThesynthesizedcompoundswerecharacterizedby^1Hnuclearmagneticresonance(NMR)spectroscopyandinfrared(IR)spectroscopy.UV-VisabsorptionandfluorescencespectrawererecordedonaShimadzuUV-3600spectrophotometerandaPerkinElmerLS55fluorescencespectrometer,respectively.ResultsandDiscussionTheα,β-diphenylacrylonitrile-basedcompoundsweresynthesizedsuccessfullyusingthesyntheticrouteoutlinedinScheme1.Thestructuresofthesynthesizedcompoundswereconfirmedby^1HNMRandIRspectroscopy.ThephotophysicalpropertiesofthesynthesizedcompoundswereinvestigatedusingUV-Visabsorptionandfluorescencespectroscopy.TheUV-Visspectraofthecompoundsexhibitedabsorptionmaximainthevisibleregion(400–600nm),indicatingthattheypossessstrongelectronictransitionswithinthisregion.Thefluorescencespectraofthecompoundswerealsorecorded,andtheyexhibitedemissionintheblue-greenregion(450–550nm)uponexcitationwith380nmlight.ConclusionInconclusion,wehavesuccessfullysynthesizedaseriesofα,β-diphenylacrylonitrile-basedcompoundsusingasimplesyntheticroute.Thephotophysicalpropertiesofthesynthesizedcompoundswereinvestigated,andtheyexhibitedstrongabsorptioninthevisib