Structural analysis of newly designed platinum compounds with interesting conductivity and optical properties
文献情報
C. Finazzo, M. Fontana, S. Van Doorslaer, W. Caseri, A. Schweiger
In the past years a great effort has been put in the design and synthesis of stable processable materials with metallic or semi-conducting properties. In order to fully exploit the possibilities of a newly synthesized conducting material its structure-function relation needs to be unraveled. Using two specific examples, it will be shown that modern EPR can reveal interesting properties of conducting materials. A detailed analysis will be given of a series of novel soluble platinum compounds designed to mimic the Magnus salt characteristics: [PtL2][Pt(mnt)2] and [PtL2][Pt(dmit)2], where L represents 1,10-phenanthroline or 4,4-dimethyl-2,2′-dipyridyl, and mnt (dmit) denotes 1,2-dicyanoethylenedithiolate (1,3-dithiol-2-thione-4,5-dithiolate). The studied complexes have semiconductive properties and high thermal stability. Although chemical analysis predicted the compounds to be diamagnetic, cw EPR revealed the presence of a considerable amount of paramagnetic species in the compounds. On the basis of a cw EPR and HYSCORE study at X-band, the species could be fully identified and the relation to the conductivity properties of the samples will be discussed.
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