Self-assembled monolayer and method of making

Patent · Tue Mar 11 00:00:00 EST 2003

OSTI ID:875098

Fryxell, Glen E ^[1]; Zemanian, Thomas S ^[2]; Liu, Jun ^[3]; Shin, Yongsoon ^[2]

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1. Kennewick, WA
2. Richland, WA
3. West Richland, WA

According to the present invention, the previously known functional material having a self-assembled monolayer on a substrate has a plurality of assembly molecules each with an assembly atom with a plurality of bonding sites (four sites when silicon is the assembly molecule) wherein a bonding fraction (or fraction) of fully bonded assembly atoms (the plurality of bonding sites bonded to an oxygen atom) has a maximum when made by liquid solution deposition, for example a maximum of 40% when silicon is the assembly molecule, and maximum surface density of assembly molecules was 5 silanes per square nanometer. Note that bonding fraction and surface population are independent parameters. The method of the present invention is an improvement to the known method for making a siloxane layer on a substrate, wherein instead of a liquid phase solution chemistry, the improvement is a supercritical phase chemistry. The present invention has the advantages of greater fraction of oxygen bonds, greater surface density of assembly molecules and reduced time for reaction of about 5 minutes to about 24 hours.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC06-76RL01830
• Assignee: Battelle Memorial Institute (Richland, WA)
• Patent Number(s): 6,531,224
• OSTI ID: 875098
• Country of Publication: United States
• Language: English

Related Subjects

self-assembled
monolayer
method
previously
functional
material
substrate
plurality
assembly
molecules
atom
bonding
sites
silicon
molecule
fraction
bonded
atoms
oxygen
maximum
liquid
solution
deposition
example
40
surface
density
silanes
square
nanometer
note
population
independent
parameters
improvement
siloxane
layer
phase
chemistry
supercritical
advantages
bonds
reduced
time
reaction
minutes
24
hours
liquid phase
liquid solution
self-assembled monolayer
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