A novel Pt(II) diimine complex, [Pt(CN)₂(H₂dpcpbpy)] (1, H₂dpcpbpy = 4,4′-di(p-carboxyphenyl)-2,2′-bipyridine), was synthesized, and its vapochromic behavior was investigated. The yellow amorphous form of 1, 1-Ya, transformed into the porous orange crystalline form, 1-Oc, upon exposure to ethanol vapor. This behavior is similar to that of the previously reported complex, [Pt(CN)₂(H₂dcphen)] (2, H₂dcphen = 4,7-dicarboxy-1,10-phenanthroline). X-ray diffraction study showed that 1-Oc possessed similar but larger porous channels (14.3 × 8.6 Å) compared to the red crystalline form of 2, 2-Rc (6.4 × 6.8 Å). Although the porous structure of 2-Rc was retained after vapor desorption, that of 1-Oc collapsed to form the orange amorphous solid, 1-Oa. However, the orange color was unchanged in this process. The initial color was recovered by grinding 1-Oa and 2-Rc. These vapor-writing and grinding-erasing functions can be applied to both in situ vapor sensing and vapor-history sensing, i.e., sensors that can memorize the existence of previous vapors. A notable difference was observed for humid air sensitivity; the orange emission of 1-Oa was largely unaffected upon exposure to humid air, whereas the red emission of 2-Rc was significantly affected. The lesser sensitivity of 1-Oa toward humidity is important for stable vapor-history sensor applications.

中文翻译：

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气相历史传感器用Pt（II）-二胺发光体组成的气相致变色多孔晶体的晶体工程

一种新型的Pt（II）二亚胺配合物[Pt（CN）₂（H ₂ d p cpbpy）]（1，H ₂ d p cpbpy = 4,4'-di（p-羧苯基）-2,2'-联吡啶），合成，并研究其蒸气致变色行为。所述ÿ ellow一个的形态形式1，1-亚，转化成多孔ø范围Ç rystalline形式，1-α，在暴露于乙醇蒸汽。此行为类似于先前报道的复合物[Pt（CN）₂（H ₂ dcphen）]（2，H₂ dcphen = 4,7-二羧基-1,10-菲咯啉）。X射线衍射研究显示，1-OC相比具有类似的，但更大的多孔通道（14.3×8.6埃）- [R ED Ç的rystalline形式2，2-RC（6.4×6.8埃）。虽然多孔结构2-RC气相解吸后保留，即的1-OC折叠以形成Ô范围一形态固体，1-OA。但是，橙色在此过程中保持不变。通过研磨1-Oa和2-Rc恢复初始颜色。这些蒸气书写和磨擦功能可以应用于原位蒸气感测和蒸气历史感测，即可以记忆先前蒸气存在的传感器。在潮湿空气敏感性方面观察到显着差异。1-Oa的橙色发射在暴露于潮湿空气中基本不受影响，而2-Rc的红色发射则受到显着影响。1-Oa对湿度的较小敏感性对于稳定的蒸汽历史传感器应用很重要。