Development of Environment Responsive Properties of Luminescent Platinum Complexes Having Controlled Nano Structures

1)含双控取代基的联吡啶铂配合物的环境响应性合成了几种新的含取代联吡啶配体的铂配合物[PtX_2（R_2bpy）]（X=Cl^-，CN^-，R=（CH_2）_nCH_3 [n= 6-10]，COOH），以实现对纳米结构的控制。[Pt（CN）_2（dnbpy）]（dnbpy= 4，4 '-二壬基-2，2'-联吡啶）在固态下表现出气致变色行为，在溶液中表现出灵敏的发光浓度依赖性。X射线衍射分析表明，该配合物通过氢键和Pt-Pt相互作用形成了具有大空腔的三维网状结构。讨论了网络结构的变化与显色性的关系。2）双核联吡啶铂（II）配合物的蒸发变色机理。双核铂配合物syn-[Pt_2（pyt）_2（bpy）_2]（PF_6）_2（pyt=吡啶-2-硫醇根离子，bpy= 2，2 '-联吡啶）在有机蒸气的作用下，其发光发生了显著的变化。在对配合物结构和光谱研究的基础上，对该配合物的蒸发变色机理进行了初步探讨。这表明，顺式异构体的头对头排列是必不可少的汽致变色行为。

1) Environment Responsive Properties of (Bipyridine)platinum(II) Complexes Containing Arrangement-controlling Substituents. Several new platinum complexes containing substituted bipyridine ligands, [PtX_2(R_2bpy)] (X=Cl^-, CN^-, R=(CH_2)_nCH_3 [n= 6-10], COOH) have been synthesized in order to control nano-structures sophisticatedly. [Pt(CN)_2(dnbpy)] (dnbpy=4,4'-dinonyl-2,2'-bipyridine) exhibited vapochromic behavior in the solid states and sensitive concentration dependence of luminescence in solution. For the complex containing carboxyl groups, pH-dependent chromism was found. The X-ray analysis revealed that three-dimensional network structure having large cavities was constructed with hydrogen bonds and Pt-Pt interactions. The relationship between the network structural change and the chromism was discussed.2) The Mechanism of the Vapochromic Behavior of a Dinuclear Bipyridine-platinum(ll) Complex. The dinuclear platinum(II) complex, syn-[Pt_2(pyt)_2(bpy)_2](PF_6)_2 (pyt=pyridine-2-thiolate ion, bpy=2,2'-bipyridine) exhibits a remarkable change in its luminescence by sensing organic vapors. Mechanistic studies of the vapochromism have been carried out on the basis of the structural and spectroscopic investigations of related complexes. It is suggested that the head-to-head arrangement of the syn isomer is essential to the vapochromic behavior.