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1、Tetrahedron66(2010)8862e8871ContentslistsavailableatScienceDirectTetrahedronjournalhomepage:www.elsevier.com/locate/tetPhotochromismofnew3,5-positionhybriddiarylethenederivativesbearingboththiopheneandthiazolemoietiesa,ba,*b,*GangLiu,ShouzhiPu,XiaomeiWangaJiangxiKeyLaboratoryofOrgani
2、cChemistry,JiangxiScience&TechnologyNormalUniversity,FenlinStreet,Nanchang330013,PRChinabCollegeofChemistry,ChemicalEngineeringandMaterialsScience,SoochowUniversity,Suzhou215123,PRChinaarticleinfoabstractArticlehistory:Fivenewdiarylethenesbasedonahybridstructureofbis(5-thiazolyl)ethe
3、neandbis(3-thienyl)etheneReceived24June2010weresynthesized,andthestructuresofthefourcompoundsweredeterminedbysingle-crystalX-rayReceivedinrevisedform17September2010diffractionanalysis.Thepropertiesofthesediarylethenes,suchasphotochromism,fluorescence,andAccepted20September2010electroc
4、hemicalpropertieswereinvestigatedindetail.Allofthesecompoundsshowedgoodphoto-Availableonline24September2010chromismandfluorescencebothinsolutionandinPMMAfilms.Theelectron-donatingsubstituentscouldeffectivelyincreasethecyclizationandcycloreversionquantumyields,andthefluorescenceKeywords:
5、emissionpeaks,whereastheelectron-withdrawinggroupsfunctionalizedaninverseactionforthesePhotochromismdiarylethenederivatives.Cyclicvoltammetryrevealedthatgreatdifferencesexistedamongsttheelec-DiaryletheneThiazolemoietytrochemicalbehaviorsofthesecompounds.Theoxidationpotentialsandtheba
6、ndgapsofthesediary-Substituenteffectlethenesincreasedremarkablywiththeincreaseinelectron-withdrawingability.AllresultssuggestedOpticalandelectrochemicalpropertythattheeffectsofsubstitutionhaveasignificanteffectonthephotochemicalandelectrochemicalbe-haviorsofthesediarylethenederivative
7、s.Ó2010ElsevierLtd.Allrightsreserved.1.Introductioncapacityisproportionaltotherecordinglaserwavelength.6Thatistosay,theshortertheabsorptionwavelengthofdiarylethenePhotochromiccompoundshaveattractedmuchattentionbe-contains,thehigherrecordingdensityisexpectedtoachievebe-causeoftheirpot
8、entialapplic
