‘‘brush-like’’ TriDAP-PS. The topographic structures together
with adsorption and desorption of the polymer film can be readily
controlled by appropriate choice of solvent systems. This study
provides new directions in corresponding fields in terms of
renewability based on the reversible nature of hydrogen bonding,
and orthogonal modification associated with the specific recogni-
tion interaction. Furthermore, the Tri-DAP unit can be easily
incorporated into other functional polymers to impart desired
mechanical, optical, electronic or biological properties onto various
substrates. The investigations are underway and will be reported in
due course.
This research was supported by the National Science
Foundation (US) CHE-0518487. We thank Prof. Thomas J.
McCarthy’s group for help in surface analysis. T. B. N acknowl-
edges NSERC (Canada) for a postdoctoral fellowship.
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In summary, we demonstrated the reversible functionaliza-
tion of silica surfaces via specific H-bonding interaction using
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