Photoelectric Emission and Electrical Conductivity of the Cesium Complex with Pyrene Derivatives

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Abstract
On the basis o the charge transfer process of the complexes, the photoemission and the electronic conduction of the complexes between cesium and pyrene derivatives, tetranitropyrene (TNO2P), tetrachloropyrene (TClP), tetrabromopyrene (TBrP) and tetracyanopyrene (TCNP) have been measured. A strong increase in the quantum yield of photoemission, from 10−3–10−4 to 10−1–102, resulting from the formation of the complexes, has been found. The promotion may take place by means of an electron transfer from cesium metal to a partner molecule; [Cs+] [Aromatics−]. The assumption is supported by the findings concerning electron spin resonance absorption and charge-transfer spectra.