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Patterning nanodomains with orthogonal functionalities: solventless synthesis of self-sorting surfaces.

Sung Gap Im¹, Ki Wan Bong, Byeong-Su Kim

¹Department of Chemical Engineering and Institute for Soldiers Nanotechnology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.

Journal of the American Chemical Society

|October 9, 2008

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A novel method fabricates multifunctional nanopatterned platforms using click chemistry and amine functionalization. This solventless, low-temperature process enables precise, biocompatible surface modification for diverse biodevice applications.

Area of Science:

Materials Science
Surface Chemistry
Nanotechnology

Background:

Developing multifunctional platforms for biodevices requires precise surface patterning.
Existing methods often involve harsh conditions or limited functional group compatibility.

Purpose of the Study:

To demonstrate a simple, solventless method for creating multifunctional nanopatterned platforms.
To enable orthogonal functionalization for advanced biodevice applications.

Main Methods:

Fabrication of a stacked polymer film using initiated chemical vapor deposition (iCVD) and plasma polymerization.
Application of capillary force lithography (CFL) for selective nanopatterning.
Orthogonal functionalization via click chemistry (acetylene groups) and carbodiimide chemistry (amine groups).

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Main Results:

Achieved nanopatterns with a minimum feature size of 110 nm.
Demonstrated a solventless, low-temperature fabrication process.
Successfully performed one-pot orthogonal functionalization in an aqueous, biocompatible solution.

Conclusions:

The developed platform offers a versatile and generalizable approach for covalent immobilization of biomolecules.
The method's biocompatibility and efficiency make it suitable for various biodevice applications.
The orthogonal functionalization strategy minimizes nonspecific binding and enhances control over surface modification.