INSERTION OF SILVER TETRACYANOQUINODIMETHANE COMPLEXES INTO LANGMUIR-BLODGETT MULTILAYERS

Citation
Cw. Yuan et al., INSERTION OF SILVER TETRACYANOQUINODIMETHANE COMPLEXES INTO LANGMUIR-BLODGETT MULTILAYERS, Thin solid films, 243(1-2), 1994, pp. 679-682
Citations number
14
Categorie Soggetti
Physics, Applied","Material Science","Physics, Condensed Matter
Journal title
ISSN journal
00406090
Volume
243
Issue
1-2
Year of publication
1994
Pages
679 - 682
Database
ISI
SICI code
0040-6090(1994)243:1-2<679:IOSTCI>2.0.ZU;2-6
Abstract
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.