Cw. Yuan et al., INSERTION OF SILVER TETRACYANOQUINODIMETHANE COMPLEXES INTO LANGMUIR-BLODGETT MULTILAYERS, Thin solid films, 243(1-2), 1994, pp. 679-682
Insertion of silver tetracyanoquinodimethane (AgTCNQ) complexes into a
Langmuir-Blodgett matrix is achieved by diffusion of silver nitrate i
nto N-docosylpyridinium-TCNQ complex multilayers, followed by reaction
of silver cations with the TCNQ species in situ. Formation of a new c
ompound in the films causes a change in optical absorption related to
charge transfer of TCNQ complexes and a chemical shift in binding ener
gy for the core levels of silver and nitrogen incorporated in the TCNQ
radical anion as well as an increase in thickness per layer by 2.5 an
gstrom of the films. The reaction rate is influenced by film reactivit
y, but is independent of the bulk solution concentration of silver nit
rate, probably because of the limited diffusion of the molecules in co
mpact films.