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Mass spectrometry of charge-transfer complexes of 7,7′,8,8′-tetracyanoquinodimethane-π-donor systems

✍ Scribed by Sadamu Kurono; Takeshi Tani; Takashi Hirano; Kazuo Tsujimoto; Mamoru Ohashi

Publisher
John Wiley and Sons
Year
1992
Tongue
English
Weight
478 KB
Volume
27
Category
Article
ISSN
1076-5174

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✦ Synopsis

Electron impact (EI) ionization and positive and negative liquid secondary ion mass spectrometry (pLSIMS and nLSIMS) of eight eharge-transfer complexes of 7,7',8,8'-tetracyanoquinodimethane (TCNQ)-aromatic systems and of the individual donors and -acceptors was examined. The EI spectra exhibited the molecular ions of both the donor and the acceptor of each complex. The molecular ion of the Ir-donor was observed in pLSIMS using m-nitrobenzyl alcohol (NBA) if its oxidation potential is lower than 1.2 V, but when the oxidation potential is higher than 1.9 V, no molecular ion was detected. On the other hand, nLSIMS exhibited the molecular ion of TCNQ in all cases. Participation of an excited state of NBA in the ionization process is suggested.

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