Self-organized monolayer formation from binary mixtures of substituted alkyl chains studied by STM.
The molecular assembly of p-iodo-phenyl octadecyl ether (I-POE), p-iodo-phenyl docosyl ether (I-PDE) and a binary mixture of these two molecules on graphite has been studied using a scanning tunneling microscope. Each molecular system self-assembles on the graphite surface to form a stable monolayer. For the binary system, the I-POE and I-PDE molecules do not mix on the surface, preferring instead to form isolated monolayer domains. Here, the I-POE molecules are preferentially adsorbed on the graphite surface, due to the effects of alkyl chain length and the functional group on the monolayer structure.
Son
S B
SB
Department of Chemistry, Chonbuk National University, Jeonju 561-756, Korea.
Lee
H
H
Jeon
I C
IC
Park
S K
SK
Hahn
J R
JR
D000327:Adsorption; D004583:Electrons; D004987:Ethers / Q000737:chemistry; D006108:Graphite / Q000737:chemistry*; D006586:Hexanes / Q000737:chemistry; D007455:Iodine / Q000737:chemistry; D018625:Microscopy, Atomic Force / Q000379:methods; D016252:Microscopy, Scanning Tunneling / Q000379:methods*; D008956:Models, Chemical; D053758:Nanoparticles / Q000737:chemistry; D036103:Nanotechnology / Q000379:methods*; D010316:Particle Size; D013499:Surface Properties
D004987:Ethers; D006586:Hexanes; D006108:Graphite; D007455:Iodine