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首页> 外文期刊>Chemistry: A European journal >Redox-mediated Negative Differential Resistance (NDR) Behavior in Perylenediimide Derivative: A Supramolecular Approach
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Redox-mediated Negative Differential Resistance (NDR) Behavior in Perylenediimide Derivative: A Supramolecular Approach

机译：氧化还原介导的前二酰亚胺衍生物中的负差分耐药性（NDR）行为：超分子方法

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摘要

Deaggregated perylenediimide (PDI) derivatives exhibit exceptionally high quantum yields, photostability and appropriate molecular features for organic electronics. This work demonstrates a metal-dye-metal framework with a large and stable negative differential resistance (NDR) at ambient conditions, built using a supramolecular strategy. The deaggregation achieved through the encapsulation of the bay-substituted phenyl groups of aggregated (L/d)-Phe- PDI dyes by the β-CD macrocyclic host is validated through detailed spectroscopic and imaging techniques. The host- guest interaction resulted in a dramatic enhancement in the emission yield from 0.28 to 0.90. In the thin film deposits, the β-CD/(L/d)-Phe-PDI complex displayed well-connected sheet-like morphology, whereas the uncomplexed (L/d)-Phe- PDI dye remained as scattered lumps. The large and reversible I-V characteristics displaying strong NDR behavior is attributed to the oxidation/reduction processes involving the rigid p-rich PDI core and is stable at least for about six months at ambient conditions, a promising system for organic electronics applications.
机译：Deaggated Ber红细酰亚胺（PDI）衍生物表现出具有异常高量子的产率，光稳定性和有机电子的适当分子特征。该作品在环境条件下，用超分子策略建造了一种金属染料 - 金属框架，在环境条件下具有大而稳定的负差分抗性（NDR）。通过β-CD大环核宿主通过详细的光谱和成像技术验证通过β-CD大环宿主的聚集（L / D）-phe-PDI染料的邻接苯基的包封来实现的脱氮。宿主交互导致发射产量的显着增强从0.28〜0.90。在薄膜沉积物中，β-CD /（L / D）-Fhe-PDI复合物显示出良好连接的片状形态，而未复制的（L / D）-Fhe-PDI染料保持散落。显示强的NDR行为的大型和可逆I-V特性归因于涉及富含抗P-DFI核心的氧化/还原过程，并且在环境条件下至少持续约六个月，是有机电子应用的有希望的系统。

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