Co-topo-polymeric compositions, devices and systems for controlling threshold and delay activation sensitivities
Co-topo-polymeric indicator compositions and methods for making and using the same are provided. Indicator compositions of the invention include a polymer and undergo a color change, which may be reversible or irreversible, in response to an applied stimulus, e.g., temperature. Aspects of methods of producing the compositions include setting a fluid co-topo-polymeric precursor composition into a solid product and then subjecting the solid product (either immediately or after a delay period) to polymerizing conditions to produce the desired indicator composition. Also provided are indicator devices that include the indicator compositions of the invention. The compositions of the invention find use in a variety of different applications.
1. A method of producing a co-topo-polymeric indicator composition, said method comprising:
(a) providing a co-topo-polymeric precursor composition comprising a first monomer and at least one of:
(i) a second monomer that is distinct from said first monomer; and
(ii) an effector compound;
(b) co-crystallizing said co-topo-polymeric precursor composition to produce a solid co-topo-polymeric precursor composition; and
(c) subjecting said solid co-topo-polymeric precursor composition to polymerization conditions sufficient to produce said co-topo-polymeric indicator composition.
2. The method according to claim 1 , wherein said co-topo-polymeric precursor composition comprises said first monomer and said second monomer.
3. The method according to claim 2 , wherein said second monomer is an analogue of said first monomer.
4. The method according to claim 2 , wherein said first and second monomers are diacetylenic monomers.
5. The method according to claim 1 , wherein said co-topo-polymeric precursor composition comprises said first monomer and said effector compound.
6. The method according to claim 1 , wherein said co-topo-polymeric precursor composition comprises said first monomer, said second monomer and said effector compound.
7. The method according to claim 1 , wherein said co-crystallizing comprises reducing the temperature of said co-topo-polymeric precursor composition.
8. The method according to claim 1 , wherein said polymerization conditions comprise subjecting said solid composition to UV light.
9. The method according to claim 1 , wherein said method further comprises placing said co-topo-polymeric precursor composition onto a solid support prior to setting.
10. The method according to claim 9 , wherein said placing comprises printing.
11. The method according to claim 1 , wherein said method further comprises placing said co-topo-polymeric indicator composition onto a solid support.
12. The method according to claim 1 , wherein step (c) occurs immediately after step (b).
13. The method according to claim 1 , wherein step (c) occurs after a storage period following step (b).