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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Multifunctional sensing ability of a new Pt/Zn-based luminescent coordination polymer
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Multifunctional sensing ability of a new Pt/Zn-based luminescent coordination polymer

机译：新型Pt / Zn基发光配位聚合物的多功能感测能力

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摘要

We synthesized a new Pt/Zn-based coordination polymer, {Zn[Pt(CN)(2)(5,5'-dcbpy)]center dot 4H(2)O}(n), (5,5'-H(2)dcbpy = 5,5'-dicarboxy-2,2'-bipyridine), which exhibits reversible colour changes in response to temperature change or exposure to chemical vapours and liquids. Such chromic behaviour shows promise for sensing not only changes in temperature but also for detecting chemical solvents and vapours. The single crystal X-ray structure indicates that one-dimensional coordination polymeric chains formed by an alternating arrangement of [Zn(H2O)(3)](2+) and [Pt(CN)(2)(5,5'-dcbpy)](2-) stacked to produce moderate metallophilic interactions between the Pt(II) ions. Thermogravimetric analysis and water vapour adsorption measurements show that both the crystal water and water coordinated to Zn(II) ions can be removed and re-adsorbed reversibly by heating or under vacuum. Emission spectra at various temperatures and/or in the presence of vapours or liquids reveal that the complex exhibits thermochromic and solvatochromic-like behaviours, with the emission band shifting between 616 and 671 nm. IR spectroscopy and powder X-ray diffraction measurements suggest that this multichromic behaviour is a result of the cooperative phenomena of water adsorption/desorption around the Zn(II) ions and the modi. cation of the metallophilic interaction.
机译：我们合成了一种新的基于Pt / Zn的配位聚合物，{Zn [Pt（CN）（2）（5,5'-dcbpy）]中心点4H（2）O}（n），（5,5'-H （2）dcbpy ＝ 5,5'-二羧基-2,2'-联吡啶），其响应于温度变化或暴露于化学蒸气和液体而表现出可逆的颜色变化。这种变色行为显示出不仅可以感测温度变化，而且可以检测化学溶剂和蒸气的希望。单晶X射线结构表明通过[Zn（H2O）（3）]（2+）和[Pt（CN）（2）（5,5'-dcbpy）的交替排列形成的一维配位聚合物链）]（2-）堆叠以在Pt（II）离子之间产生适度的嗜金属相互作用。热重分析和水蒸气吸附测量结果表明，结晶水和配位于Zn（II）离子的水都可以通过加热或在真空下可逆地去除和重新吸附。在各种温度下和/或在蒸气或液体存在下的发射光谱表明，该配合物表现出热致变色和溶剂变色的行为，发射带在616至671 nm之间移动。红外光谱和粉末X射线衍射测量表明，这种多色行为是水在Zn（II）离子和Modi周围发生水吸附/解吸的协同现象的结果。亲金属相互作用的阳离子。

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