The structure of 2D charge transfer salts formed by TCNQ/alkali metal coadsorption on Ag(111)

Abstract

Please refer to published version for the most recent bibliographic citation information. If a published version is known of, the repository item page linked to above, will contain details on accessing it.

Donor–Acceptor Co-Adsorption Ratio Controls the Structure and Electronic Properties of Two-Dimensional Alkali–Organic Networks on Ag(100)

“…It is notable, however, that although the Cs atoms are imaged brightly in the STM ( Figure 1 a), the K atoms are not imaged in this way. This inability to uniquely identify coadsorbed alkali metal adatoms from STM images has also been seen in alkali/TCNQ layers on Ag(111) 64 , 65 but we infer from the identical arrangement of the TCNQ molecules that this phase has the comparable K(TCNQ) 4 stoichiometry.…”

“…It is notable, however, that although the Cs atoms are imaged brightly in the STM (Figure 1a), the K atoms are not imaged in this way. This inability to uniquely identify coadsorbed alkali metal adatoms from STM images has also been seen in alkali/TCNQ layers on Ag(111) 64,65 but we infer from the identical arrangement of the TCNQ molecules that this phase has the comparable K(TCNQ) 4 stoichiometry. Two further KTCNQ coadsorption phases were observed with increasing K coverage leading to indicated stoichiometries of K(TCNQ) 2 and KTCNQ, with associated matrices of ( ) S1 summarizes the properties of all four detected coadsorption phases.…”