Abstract

Self-organization of small molecular units in stack-forming radical ion salts can be used to prepare anisotropic thin films. The alkali-2,5-dimethyl- N, N′-dicyanoquinonediimine (DMe-DCNQI) radical ion salts films represent model systems to study solid state redox reactions when their components are deposited on cooled substrates. While heating the films this reaction is monitored by in situ measurements of the conductivity, the UV-Vis-IR absorption, the electron spin resonance and the photoelectron emission of the valence band and shallow alkali core levels. Initial experiments demonstrate the use of the alkali DCNQI films as wireless sensors for spin-carrying gases, thus pointing at future device applications.

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