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AssigneePresident and Fellows of Harvard College
InventorsKezi Cheng, Alex Chortos, David Clarke
Estimating the term…
Described in embodiments herein are thiol-ene polymeric compositions that exhibit photo-induced, reversible switching between a solid (e.g., elastomeric) state and a liquid (e.g., flowable) state. The thiol-ene polymeric compositions may comprise a vinyl oligomer comprising at least two vinyl groups, a thiol oligomer comprising at least two thiol groups, and a Type I photoinitiator. In some embodiments, the composition comprises an excess of thiol groups relative to vinyl groups (e.g., a ratio of thiol groups to vinyl groups in the composition is at least 3:1). Reversible switching between the solid state and the liquid state may be induced through exposure of the composition to electromagnetic radiation (e.g., ultraviolet (UV) radiation). In some cases, reversible switching may be induced by a relatively low amount of energy (e.g., about 1 J/cm2 or less).
A composition, comprising:
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18-23. (canceled)
A method, comprising:
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A method of forming a thiol-ene polymeric composition, comprising:
Dependencies are inferred from the claim text.