Bifunctional patterning of mixed monolayer surfaces using scanning probe lithography for multiplexed directed assembly.
The patterning of a surface with more than one type of functionality in spatially resolved fashion is described. A scanning probe was used to create patterns composed of two orthogonal types of functionality within a dense, electrochemically active mixed monolayer via a simple modulation of the applied surface bias. One reductive pathway produces surface-bound amine moieties while the other creates an oxidized surface. The two newly created surface functionalities can each be used independently to locally deposit complementary materials such as electron- or hole-transporting molecules via self-assembly.
Unruh
David A
DA
College of Chemistry, University of California, Berkeley, California 94720, USA.
Mauldin
Clayton
C
Pastine
Stefan J
SJ
Rolandi
Marco
M
Fréchet
Jean M J
JM
D000588:Amines / Q000737:chemistry; D016227:Benzoquinones / Q000737:chemistry; D004563:Electrochemistry; D018625:Microscopy, Atomic Force; D036103:Nanotechnology / Q000379:methods*; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry; D012821:Silanes / Q000737:chemistry; D013499:Surface Properties
D000588:Amines; D016227:Benzoquinones; D012821:Silanes; C004532:quinone; D010100:Oxygen