Development and the Mechanistic Study of Luminescent Diimine-Platinum Complexes with Environmental-Sensitivity

(1) Vapochromism and Crystal Structures of Luminescent Dicyano (2,2'-bipyridine) platinum (II).Vapochromic behavior of the title complex has been investigated structurally and emissionspectroscopically. The transformation between red and yellow forms is accompanied by The sensitiveluminescence change as well as the color change电子互动（Pt electronic interactions. the sensitive vapochromism for）this system is attributable to the slight deformation of the stacking structure induced by water(2) Dinuclear Bipyridine-platinum (II) Complexes that Exhibit Vapor-Induced LuminescenceSwitching in Crystals. A new dinuclear platinum (II) complexsyn_[pt_2 (pyt)_2 (bpy)_2] (pf_6)_2 (pyt = pyridine-2-thiolate ion, bpy = 2,2'-bipyridine)，which exhibits a remarkable change in its luminescence sensing organic vapors has been synthesizedand characterized. The可证明的属性是对结构基础的投资化学和spectroscopies.(3) Development of New Luminescent Platinum Complexes. In order todevelop more sophisticated functionality, several new platinum complexes have been synthesizedModified bipyridine-platinum complexes containing long-alkyl chains, alkylthiol groups或carboxylic groups已被隔离和角色化。Neutral dinuclear platinum (II) complexes使用2-phenylpyridine instead of bipyridine.(4) thermar - and Photo-Controlof the Linkage Isomerism of Bis (thiocyanato) (2,2'-bipyridine) platinum (II). Three Linkage isomersisomerization of the title complex were isolated and the structures been elucidatedbehaviors among them have been clarified in different media such as solution, crystal，and polymer film。

(1) Vapochromism and Crystal Structures of Luminescent Dicyano (2,2'-bipyridine) platinum (II). Vapochromic behavior of the title complex has been investigated structurally and emission spectroscopically. The transformation between red and yellow forms is accompanied by the sensitive luminescence change as well as the color change, which reflects the change of the Pt・・・Pt electronic interactions. The sensitive vapochromism for this system is attributable to the slight deformation of the stacking structure induced by water molecules.(2) Dinuclear Bipyridine-platinum (II) Complexes that Exhibit Vapor-Induced Luminescence Switching in Crystals. A new dinuclear platinum (II) complex, syn-[Pt_2 (pyt)_2 (bpy)_2] (PF_6)_2 (pyt = pyridine-2-thiolate ion, bpy = 2,2'-bipyridine), which exhibits a remarkable change in its luminescence sensing organic vapors has been synthesized and characterized. The remarkable properties are investigated on the basis of the structural chemistry and spectroscopies.(3) Development of New Luminescent Platinum Complexes. In order to develop more sophisticated functionality, several new platinum complexes have been synthesized : Modified bipyridine-platinum complexes containing long-alkyl chains, alkylthiol groups, or carboxylic groups have been isolated and characterized. Neutral dinuclear platinum (II) complexes have been obtained by using 2-phenylpyridine instead of bipyridine.(4) Thermal- and Photo-Control of the Linkage Isomerism of Bis (thiocyanato) (2,2'-bipyridine) platinum (II). Three linkage isomers of the title complex were isolated and the structures have been elucidated. The isomerization behaviors among them have been clarified in different media such as solution, crystal, and polymer film.