The research of new multifunctional materials, as those undergoing spin crossover (SCO) and luminescent properties, is extremely important in the development of further optical and electronic switching devices. As a new step towards this ambitious aim, the coupling of SCO and fluorescence is presented here following two main strategies: whether the fluorescent agent is integrated as a part of the main structure of a 3D SCO coordination polymer {Fe^II(bpan)[M^I(CN)₂]₂} (bpan = bis(4-pyridyl)anthracene, M^I = Ag (FebpanAg), Au (FebpanAu)) or is a guest molecule inserted within the cavities of the 3D switchable framework {Fe^II(bpb)[M^I(CN)₂]₂}·pyrene (bpb = bis(4-pyridyl)butadiyne, M^I = Ag (FebpbAg·Pyr), Au (FebpbAu·Pyr)). The magnetic, calorimetric, structural, UV-Vis absorption and fluorescent characterizations were performed confirming the occurrence of a SCO-fluorescence interplay in the studied compounds. Moreover, the relevance of the intrinsic or extrinsic nature of the luminescence on the efficiency of the interplay is discussed on the basis of the available information.

中文翻译：

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3D Hofmann型配位聚合物的外在发光与固有发光及其与自旋交叉的相互作用

新型多功能材料的研究，如经历自旋交叉（SCO）和发光特性的材料，在进一步的光学和电子开关设备的开发中极为重要。作为朝着这一宏伟目标迈出的新一步，SCO和荧光的耦合通过以下两种主要策略呈现：荧光剂是否作为3D SCO配位聚合物{Fe ^II（bpan）[M^我（CN）₂ ] ₂ }（BPAN =双（4-吡啶基）蒽中，M^我=银（FebpanAg），金（FebpanAu））或是3D可切换框架{Fe的空腔内插入的客体分子^II（ bpb）[M^我（CN） ₂ ] ₂ }·芘（BPB =双（4-吡啶基）丁二炔，男^我=银（ FebpbAg·比利牛斯），金（ FebpbAu·比利））。进行了磁，量热，结构，UV-Vis吸收和荧光表征，确认了所研究化合物中SCO-荧光相互作用的发生。此外，在可获得的信息的基础上，讨论了发光的内在或外在本质与相互作用效率的相关性。