Supramolecular Self-Assembly and Dual-Switch Vapochromic, Vapoluminescent, and Resistive Memory Behaviors of Amphiphilic Platinum(II) Complexes,Journal of the American Chemical Society

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Supramolecular Self-Assembly and Dual-Switch Vapochromic, Vapoluminescent, and Resistive Memory Behaviors of Amphiphilic Platinum(II) Complexes
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2017-09-21 , DOI: 10.1021/jacs.7b07638
Yongguang Li ₁ , Ling Chen ₁ , Yeye Ai ₁ , Eugene Yau-Hin Hong ₂ , Alan Kwun-Wa Chan ₂ , Vivian Wing-Wah Yam _{1,

2}

Affiliation

A series of amphiphilic platinum(II) complexes with tridentate N-donor ligands has been synthesized and characterized. Different supramolecular architectures are constructed using the amphiphilic molecules as the building blocks through the formation of Pt···Pt and π-π stacking interactions in aqueous media. The aggregation-deaggregation-aggregation self-assembly behavior together with obvious spectroscopic changes could be fine-tuned by the addition of THF in aqueous media. More interestingly, one of the complexes is found to show fast response and high selectivity toward alcohol and water vapors with good reversibility, leading to drastic color and luminescence changes, and hence unique dual switching behavior, with the water molecules readily displaced by the alcohol vapor. Rapid writing and erasure have been realized via the control of a jet or a stream of alcohol vapor flow. In addition, it has been employed as active materials in the fabrication of small-molecule solution-processable resistive memory devices, exhibiting stable and promising binary memory performance with threshold voltages of ca. 3.4 V, high ON/OFF ratios of up to 105 and long retention times of over 104 s. The vapochromic and vapoluminescent materials are demonstrated to have potential applications in chemosensing, logic gates, VOC monitoring, and memory functions.

中文翻译：

两亲铂 (II) 配合物的超分子自组装和双开关气相变色、气相发光和电阻记忆行为

已经合成并表征了一系列具有三齿 N 供体配体的两亲性铂 (II) 配合物。通过在水性介质中形成Pt…Pt和π-π堆积相互作用，以两亲性分子为基础构建了不同的超分子结构。通过在水性介质中添加四氢呋喃可以微调聚集-解聚-聚集自组装行为以及明显的光谱变化。更有趣的是，发现其中一种配合物对酒精和水蒸气显示出快速响应和高选择性，具有良好的可逆性，导致颜色和发光剧烈变化，因此具有独特的双重开关行为，水分子很容易被酒精蒸气取代. 通过控制喷射或酒精蒸汽流实现了快速写入和擦除。此外，它已被用作小分子溶液可加工电阻存储器件的制造中的活性材料，表现出稳定且有前途的二进制存储性能，阈值电压为约 3.4 V，高达 105 的高开/关比和超过 104 秒的长保留时间。蒸汽变色和蒸汽发光材料已被证明在化学传感、逻辑门、VOC 监测和记忆功能方面具有潜在应用。高达 105 的高开/关比和超过 104 秒的长保留时间。蒸汽变色和蒸汽发光材料已被证明在化学传感、逻辑门、VOC 监测和记忆功能方面具有潜在应用。高达 105 的高开/关比和超过 104 秒的长保留时间。蒸汽变色和蒸汽发光材料已被证明在化学传感、逻辑门、VOC 监测和记忆功能方面具有潜在应用。

更新日期：2017-09-21

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