کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1694659 | 1519080 | 2014 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Efficient energy transfer of cationic iridium(III) complexes on the surface of a colloidal clay Efficient energy transfer of cationic iridium(III) complexes on the surface of a colloidal clay](/preview/png/1694659.png)
• Energy transfer occurred between iridium complexes co-adsorbed by synthetic saponite.
• Red emission due to the acceptor was enhanced remarkably by energy transfer.
• A clay mineral plays a role of a mediator in harvesting light energy.
In order to investigate energy transfer on a clay surface, blue- and red- emitting cationic iridium(III) complexes, [Ir(dfppy)2L]+ (dfppyH = 2-(4′,6′-difluorophenyl)pyridine, L = 4,4′-dimethyl-2,2′-bipyridine) and [Ir(piq)2L]+ (piqH = 1-phenyisoquinoline) , respectively, were co-adsorbed by colloidally dispersed synthetic saponite in 1:3 (v/v) methanol/water. The stationary and transient emission results were analyzed on the basis of the Förster-type energy transfer mechanism. It was concluded that energy transfer took place from the excited blue emitter to the red one efficiently. The accumulation of the reactants on a clay particle was essential, since no energy transfer occurred in the absence of a clay in the similar concentration ranges.
Blue and red emitting cationic iridium(III) complexes were co-adsorbed on the colloidal particles of a synthetic saponite, which took place in the efficient energy transfer.Figure optionsDownload as PowerPoint slide
Journal: Applied Clay Science - Volumes 97–98, August 2014, Pages 84–90