具有激發(fā)態(tài)分子內(nèi)質(zhì)子轉(zhuǎn)移的希夫堿型的染料的合成與光譜性質(zhì)研究.pdf

1、重慶大學(xué)碩士學(xué)位論文具有激發(fā)態(tài)分子內(nèi)質(zhì)子轉(zhuǎn)移的希夫堿型的染料的合成與光譜性質(zhì)研究姓名：仲曉林申請學(xué)位級別：碩士專業(yè)：化學(xué)指導(dǎo)教師：高放201004英文摘要IIIABSTRACTJustthesameastheintramoleculargetransfer(ICT)theexcitedstateintramolecularprotontransfer(ESIPT)isthebasicprocessesofthenatureitrefer

2、stoganicmoleculesabsbingphotonsfromthegroundstatetransitiontotheexcitedstateESIPTprocessoccursbetweenintramoleculardeturprotongroupstheacceptiveprotongroups.Animptantfeatureofthisprocessisthedeturprotongroupsusuallyoccur

3、Tautomerismsuchasenolaseoccursfromenoltransfertoketotautomerizationintheexcitedstateleadtotheemissionwavelengthofmoleculessignificantredshift.Nmallysuchmoleculesaregoodfluescentprobephotochromicmaterials.Suchreactionsare

4、greatimptantfthephotochemicalphotobiologicalresponseatpresentitisalsoahottopicoftheexperimentaltheeticalresearch.BenzaldehydecondensingofaromaticamineSchiffbasecompoundstheirderivativeswerechosenasthetargetofthisstudywer

5、edesignedsynthesizedaseriesofSchiffbasephotosensitiveDyesprovidingwiththeabilityofexcitedstateintramolecularprotontransfertemplateDyesmoleculewithoutESIPT.1HNMR13CNMRelementalanalysiswereusedtoacterizethem.Thephotochemic

6、alphotophysicalpropertiesofcompoundsweredetectedbyUVabsptionspectrafluescenceemissionspectrafluescencequantumyieldfluescencelifetimeaswellastwophotonupconversionfluescenceemissionspectratwophotonabsptioncrosssection.Afte

7、ralotofresearchwkwedrewsomeconclusionsasfollowing:1.BenzaldehydecondensingofaromaticamineschiffbasecompoundstheirderivativesinparticularitscompoundscontainingadjacenthydroxylgrouppossessgoodcapabilityofESIPT.Intheissueno

8、tonlyESIPTwasdetectedthroughthestructureofbranchedhyperbranchedmolecularchemistrybutalsoadjustablitycontrollablitywasachievedinmolecularlevel.2.Thederivativeswithtwostyrenefragmentconnectingwithbenzaldehydecondensingofar