Controlled formation of pseudoisocyanine J-aggregates in the interlayer space of synthetic saponite
Controlled formation of pseudoisocyanine J-aggregates in the interlayer space of synthetic saponite
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DOI：
10.1016/j.clay.2017.02.007
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发表时间：
2017-05
影响因子：
5.6
通讯作者：
M. Matejdes;Daisuke Himeno;Yasutaka Suzuki;J. Kawamata
中科院分区：
文献类型：
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作者：
M. Matejdes;Daisuke Himeno;Yasutaka Suzuki;J. Kawamata
本文研究了具有J型分子间耦合的染料组装体，这种组装体不仅具有激子输运特性，而且具有空穴和电子输运性质。如果由J-型染料组件组成的材料的光子性能可以通过一些外部刺激来控制，则可以显著提高材料的使用。为此，比较了阳离子花菁染料1，1‘-二乙基-2，2’-花菁(PIC)在合成皂石(SAP)层间的J型聚集态和非聚集态之间的转换能力。通过在层间添加和去掉二甲基亚砜(DMSO)来实现开关。在70%CEC负载水平下制备的PIC/SAP杂化薄膜在层间添加和去除DMSO后，在20秒的光物理响应周期内表现出良好的稳定性，这表明所提出的实验方法可以用于未来人工光捕获或具有可控性能的半导体系统的开发。
In presented work dye assemblies with J-type intermolecular coupling, which are well recognized not only for their exciton transport but also for hole and electron transport properties were investigated. The use of materials consisting of J-type dye assemblies can be significantly enhanced if their photonic properties can be controlled by some external stimuli. For these reasons the switching abilities between J-type aggregated and non-aggregated states of a cationic cyanine dye, 1,1′-diethyl-2,2′-cyanine (pseudoisocyanine, PIC) intercalated in the interlayer space of synthetic saponite (Sap) were compared. The switching was performed by adding and removing of dimethyl sulfoxide (DMSO) from the interlayer space. The PIC/Sap hybrid film prepared at 70% CEC loading level has shown excellent stability within 20 cycles of photophysical response after adding and removing of DMSO from the interlayer space, indicating that presented experimental approach can be useful in the future development of artificial light harvesting or semiconductor systems with controllable properties.