J. Poppensieker et al., Investigation of the epitaxial growth of octamethylene-tetrathiafulvalene (OMTTF) on substrates of different chemical reactivity, ADV FUNCT M, 11(3), 2001, pp. 188-192
Monolayers of the organic donor OMTTF (octamethylene-tetrathiafulvalene) we
re grown on a Ag(100) substrate and on the iodine c(2x2) superstructure on
Ag(100) by organic molecular beam deposition (OMBD) under ultra high vacuum
(UHV) conditions. The films were characterized by low energy electron diff
raction (LEED) and scanning tunneling microscopy (STM). In the monolayer re
gime the molecules grow on both substrates in an ordered structure. By comp
aring the degree of long-range order and the geometrical structure observed
on Ag and on iodine with that of OMTTF-TCNQ we discuss the interplay betwe
en the different interactions and long-range order in epitaxial growth.