US 12,258,470 B2
Chromogenic materials, methods of making chromogenic materials, and methods of use
Peng Jiang, Gainesville, FL (US); Ruochen Liu, Bryan, TX (US); Rao Fei, Boulder, CO (US); Wei Zhang, Gainesville, FL (US); Sin-Yen Leo, Gainesville, FL (US); Calen Leverant, Gainesville, FL (US); Helena Jiang, Gainesville, FL (US); Curtis Taylor, Gainesville, FL (US); and Yifan Zhang, Gainesville, FL (US)
Assigned to University of Florida Research Foundation, INC., Gainesville, FL (US)
Appl. No. 16/969,655
Filed by University of Florida Research Foundation, Inc., Gainesville, FL (US)
PCT Filed Feb. 13, 2019, PCT No. PCT/US2019/017862
§ 371(c)(1), (2) Date Aug. 13, 2020,
PCT Pub. No. WO2020/027871, PCT Pub. Date Feb. 6, 2020.
Claims priority of provisional application 62/775,493, filed on Dec. 5, 2018.
Claims priority of provisional application 62/629,739, filed on Feb. 13, 2018.
Prior Publication US 2020/0400581 A1, Dec. 24, 2020
Int. Cl. G01N 21/75 (2006.01); C08J 9/00 (2006.01); C08J 9/26 (2006.01); C08L 71/02 (2006.01); C08L 75/16 (2006.01)
CPC C08L 71/02 (2013.01) [C08J 9/0061 (2013.01); C08J 9/008 (2013.01); C08J 9/26 (2013.01); C08L 75/16 (2013.01); C08J 2205/042 (2013.01); C08J 2335/02 (2013.01); C08J 2375/16 (2013.01); C08J 2483/04 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A porous polymer material comprising an ordered array of voids, wherein a distance between at least two pairs of adjacent voids is substantially the same, wherein a polymer framework separates the voids;
wherein the porous polymer material has a recovery state, wherein the voids are in an uncollapsed state and the porous polymer material has the characteristic of having an iridescent color;
wherein the porous polymer material has a deformed state, wherein the voids are in a collapsed state and the porous polymer material has the characteristic of being either non-iridescent or substantially transparent; and
wherein the deformed state occurs when a solvent is evaporated from the porous polymer material causing the voids to collapse, and wherein when the recovery state occurs when the porous polymer material in the deformed state is exposed to an external stimulus causing the collapsed voids renew their uncollapsed state, wherein the external stimulus is selected from: a target compound or a laser illumination;
wherein the external stimulus is a target compound; and
wherein the target compound is selected from the group consisting of: uncured PDMS oligomer, a drug, Vitamin E, and lidocaine.