质子转移有机分子3羟基黄酮的光谱和光开关特性研究

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1、南开大学硕士学位论文质子转移有机分子3-羟基黄酮的光谱和光开关特性研究姓名：于雅鑫申请学位级别：硕士专业：光学指导教师：张桂兰20030520ABSTRACTA嚣STRACTFollowingthedevelopmentofopticalcommunicationtechnology，all-opticalnetworkisapproachingusmoreandmorefast。Underthissituation，allkindsofphotonicdevicesusedintheall-opticalnetworkhave

2、beenhighlyconcemedbypeople。Amongthem，opticalswitchinghasbeenoneofthebestimportantopticaldevicesandisindispensablefortheselectionofwavelengthandself-protectionofopticalcommueationnetwork。Companingthestudiesonvariedorganicmoleculeswithuniqueproperties，manyoutstandingme

3、ritshavebeendiscoveredfromthephotonicdevicesusingpropertiesofexcited-stateabsorption，light-inducednonlinearrefractiveeffectandlight*inducedthermaleffectoforganicmolecules．Therefore，theopticalswitchingphenomenonsofallkindsoforganicmoleculeshavebeenstudiedinmanywaysinr

4、ecentyears．Especiallytheorganicmoleculeswimexcitedstateprotontransferringhavebeenoneoftheresearchhotpoints，whichpossessmanyexcellentmeritssuchasrapidresponse，inversionoftransferring，photochromismandexcellentopticalnon·linearityandSOon．Therefore，peopleareexploringthep

5、ossibilitiesofpotentialapplicationofthemoleculeswithexcitedstateproton。transferringasthephotonicdevicematerials．Inthisdissertation，wemainlyinvestigatedtheopticalswitchingpropertiesandthespectroscopicpropertiesoftheorganicmolecule3，hydroxyflavonewithexcitedstateintra-

6、moleculeprotontransferring．Themainresearchworkandresultsareasfollowing：1。Theabsorptionandfluorescentspectraandtheefficiencyofprotontransferingof3-hydroxyflavoneindifferentpolarsolventswerestudied．Meanwhile，theperturbationsofhydrogen-bondingimpuritiesontheabsorptionan

7、dfluorescentspectraof3-hydroxyflavonewereobservedandinvestigated．Theexperimentresultsshowthattheprotontransferingefficiencyof3-hydroxyflavoneisthehighestin!lABSTRACT'_■-__l■■■■■●■-_●■■■_-■l_■■■■●___-___■_____■■__lI--___■______■■-___-o___l______-___l’’’’一Cyclohexane，l

8、owerinEthanolandthelowestinDimethylSulphoxide．Furthermore，thefluorescentspectraof3-hydmx!yflavoneisshowntodependsensitivelyontraces