Work

3D Photofixation Lithography in Diels–Alder Networks

Year: 2012

Type: article

Abstract: 3D structures are written and developed in a crosslinked polymer initially formed by a Diels-Alder reaction. Unlike conventional liquid resists, small features cannot sediment, as the reversible crosslinks function as a support, and the modulus of the material is in the MPa range at room temperature. The support structure, however, can be easily removed by heating the material, and depolymerizing the polymer into a mixture of low-viscosity monomers. Complex shapes are written into the polymer network using two-photon techniques to spatially control the photoinitiation and subsequent thiol-ene reaction to selectively convert the Diels-Alder adducts into irreversible crosslinks.

Source: Macromolecular Rapid Communications

DOI: 10.1002/marc.201200599

Authors: Brian J. Adzima, Christopher J. Kloxin, Cole A. DeForest, Kristi S. Anseth, Christopher N. Bowman

Institutions: University of Colorado Boulder, University of Delaware, Howard Hughes Medical Institute

Language: English

Topic: Nonlinear Optical Materials Studies

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funder: National Institute of Dental and Craniofacial Research

Award: Development of Novel Thiol-Ene-Methacrylate Composites for Dental Restorative Mat