1目录第一章绪论...........................................................................................................................................................41.1有机发光材料应用介绍.................................................................................................................41.2ACQ效应和AIE效应........................................................................................................................41.2.1聚集荧光淬灭效应(aggregation-causedquenching,ACQ)介绍....................41.2.2聚集诱导发光效应(aggregation-inducedemission,AIE)介绍....................51.3ACQ和AIE效应研究进展...............................................................................................................61.4课题的提出与设计............................................................................................................................61.4.1课题的提出.............................................................................................................................61.4.2课题的具体设计....................................................................................................................61.4.3实验目标..................................................................................................................................7第二章实验部分..................................................................................................................................................82.1合成SB1和SB2..................................................................................................................................82.2SB1的光物理性质与ACQ性质....................................................................................................82.3SB2的光物理性质和AIE性质....................................................................................................102.4SB1和SB2的荧光pH值传感应用..........................................................................................12第三章理论研究部分......................................................................................................................................133.1理论研究分析方法..........................................................................................................................133.2分子结构/排列对SB1光学性质及ACQ性质的影响.......................................................133.3分子结构/排列对SB2光学性质及AIE性质的影响..........................................................153.4结果分析..............................................................................................................................................17第四章总结与展望...........................................................................................................................................184.1论文总结..............................................................................................................................................184.2有待进一步解决的问题.................................................................................................................19第五章致谢.........................................................................................................................................................19第六章附录.........................................................................................................................................................205.1所用试剂,仪器与软件信息.......................................................................................................205.2参考文献..............................................................................................................................................212聚集荧光淬灭(ACQ)和聚集诱导发光(AIE)机理研究MechanismStudyofAggregation-causedQuenching(ACQ)andAggregation-inducedEmission(AIE)专业:应用化学摘要:对于绝大多数传统的有机发光材料,当处于聚集态时,出现荧光猝灭的现象,我们称之为聚集荧光淬灭效应(aggregation-causedquenching,ACQ)。而近年来,随着科学技术的不断发展,化学家们发现了一种发光性质截然相反的荧光材料。这种发光材料在稀溶液中几乎不发光,反而在聚集态下表现出很强的荧光,并把它命名为聚集态诱导发光效应(aggregation-inducedemission,AIE)。本论文主要通过实验现象和理论分析来研究聚集态荧光淬灭效应(ACQ)和聚集态诱导发光效应(AIE)这两种完全相反的发光特性。首先,由一当量的二胺和两当量的水杨醛通过一个简单的缩合反应制备出两种分别具有ACQ和AIE性质的水杨醛衍生的双希夫碱。然后,分析研究它们的ACQ/AIE性质和pH传感应用。最后,通过X-射线单晶结构揭示分子结构/分子排列与ACE/AIE性质的内在关系。关键词:聚集荧光淬灭;聚集诱导发光;X射线单晶结构;发光材料3MechanismStudyofAggregation-causedQuenching(ACQ)andAggregation-inducedEmission(AIE)Major:AppliedChemistryAbstract:Formostconventionalorganiclightemittingmaterial,theluminescenceisoftenweakenedorquenchedwhentheyareintheaggregatestate.Thisphenomenonismainlycausedbythe“formationofaggregates”,whichhasfrequentlybeenreferredtoas“aggregation-causedquenching”(ACQ).Inrecentyears,withtheprogressofscientificresearch,chemistsdiscoveredanexactlyoppositephenomenontothenotoriousACQeffect.Thelight-emittingmaterialwasnon-emissiveindilutesolutionsbutbecamehighlyluminescentwhenthemoleculeswereaggregatedinconcentratedsolutionsorcastintosolidfilms.Theauthorstermedtheprocess“aggregation-inducedemission”(AIE).Thisarticlemainlystudythesetwocompletelyoppositeluminescentpropertiesbyexperimentalandtheoreticalanalysis.First,twoluminescentsalicylaldehyde-basedSchiffbasesthatpossessACQandAIEproperties,respectively,arepreparedthroughasimpleone-potcondensationreactionofdiam