Design, Synthesis, and Emmission Characteristics of Fluorescence Switching Dyes.

利用荧光发射的直观性和高灵敏度的优点，设计、合成了以下新型多功能荧光染料或分子体系，并研究了它们在外界或环境刺激下的荧光响应行为。1.喹醇型荧光主体：合成了可与各种有机溶剂分子形成包合物晶体的新型喹酚型荧光主体。非常有趣的是，客体分子包裹后主体晶体的荧光发射显著增强。2.荧光二色性染料：新型苯并呋喃并喹型荧光染料具有适当的二色性，在有序向列液晶中显示出良好的荧光二色性。3.咪唑并蒽醌类染料：这些具有喹类结构的染料在电压作用下表现出良好的可逆颜色-荧光开关行为。4.金属离子发光化学传感器：合成了新型的基于咪唑并蒽醌发色团的ICT和PET型荧光化学传感器，并研究了其对金属离子的传感能力。与ICT传感器相比，PET传感器对金属络合具有更灵敏的荧光增强作用。5.磷二酸酯的发光金属受体：合成了具有酰胺咪唑啉或氨基咪唑啉基团的三(2，2‘-联吡啶基)Ru配合物。配合物的吸收和限光性质对区分磷酸二酯和磷酸二酯阴离子具有很高的敏感性。

By using a merit of visuality and high sensitivity of fluorescence emission, the following novel multi-functional fluorescent dyes or molecular systems have been designed, synthesized, and their fluorescence response behaviors upon external or enviromental stimulations were investigated.1.Quinol-type fluorescent host : Novel quinol-type fluorescent hosts which can form clathrate crystals with various organic solvent molecules have been synthesized. Very interestingly, the fluorescence emission of host crystals were dramatically enhanced upon enclathration of the guest molecules.2.Fluorescent dichroic dye : Novel benzofuranoquinol-type fluorescent dyes with appropriate dichroic properties showed good fluorescent dichroic properties in an ordered nematic liquid crystal.3.Imidazoanthraquinone-Type dye : These dyes having quinoid structure were found to exhibit good reversible color-fluorescence switching behaviors upon voltage application.4.Luminescent chemosensor for metal ions : Novel ICT-type and PET-type fluorescent chemosensors based on imidazoanthraquinone chromophore have been synthesized and their sensing ability for metal ions was inverstigated. The PET sensor exhibited more sensitive fluorescence enhancement upon metal complexation than the ICT sensor.5.Luminescent metalloreceptor for phosphodiesters : Novel tris (2,2'-bipyridyl) ruthenium complexes prossessing acylamino-imizazoline or aminoimidazoline groups have been synthesized. The absorption and liminescence properties of the complexes were highly sensitive to discriminate between phosphodiesters and phosphodiester anions.