Polymer-initiated photogeneration of silver nanoparticles in SPEEK/PVA films: direct metal photopatterning.
Cross-linking of sulfonated poly(ether-ether)ketone-poly(vinyl alcohol) (SPEEK-PVA) materials yields flexible polymer films, possessing high light-sensitivity and ion-exchange capabilities. Adsorbed Ag+ ions are photoreduced in the film under illumination (lambda = 350 nm), leading to metal nanoparticle formation in places where the film has been exposed to the light. Nanoparticles form via reduction of Ag+ by the polymeric alcohol radicals, generated in the system as a result of photochemical H-abstraction from PVA molecules by the excited carbonyl triplet state of SPEEK. Use of the films for direct metal photopatterning is demonstrated.
Korchev
A S
AS
Department of Chemistry, Auburn University, Auburn, Alabama 36849, USA.
Bozack
M J
MJ
Slaten
B L
BL
Mills
G
G