US 12,304,884 B2
Photo-cleavable surfactants
Ying Ge, Madison, WI (US); Song Jin, Madison, WI (US); Tania Guardado Alvarez, Madison, WI (US); and Kyle Brown, Madison, WI (US)
Assigned to Wisconsin Alumni Research Foundation, Madison, WI (US)
Filed by Wisconsin Alumni Research Foundation, Madison, WI (US)
Filed on Dec. 20, 2022, as Appl. No. 18/069,005.
Application 18/069,005 is a division of application No. 16/972,881, granted, now 11,567,085, previously published as PCT/US2019/035447, filed on Jun. 4, 2019.
Claims priority of provisional application 62/682,027, filed on Jun. 7, 2018.
Claims priority of provisional application 62/810,744, filed on Feb. 26, 2019.
Prior Publication US 2023/0139837 A1, May 4, 2023
Int. Cl. C07C 381/00 (2006.01); B01D 57/02 (2006.01); C07C 309/14 (2006.01); C07C 309/15 (2006.01); G01N 27/26 (2006.01); G01N 27/447 (2006.01); G01N 33/68 (2006.01); B01D 15/38 (2006.01)
CPC C07C 381/00 (2013.01) [C07C 309/14 (2013.01); C07C 309/15 (2013.01); G01N 27/26 (2013.01); G01N 27/44747 (2013.01); G01N 33/68 (2013.01); G01N 33/6842 (2013.01); G01N 33/6848 (2013.01); B01D 15/38 (2013.01); B01D 57/02 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A photo-cleavable surfactant comprising: a) a hydrophilic head, b) a hydrophobic tail, and c) a photo-cleavable moiety covalently linking the hydrophilic head and hydrophobic tail, where the photo-cleavable moiety is able to release the hydrophilic head, release the hydrophobic tail, and/or break apart upon exposure to ultraviolet (UV) radiation,
wherein the photo-cleavable surfactant has the formula:

OG Complex Work Unit Chemistry
wherein
R1 is a substituted or unsubstituted aryl group having from 6 to 18 carbon atoms;
R2 is a substituted or unsubstituted alkylene or alkenylene group having from 2 to 18 carbon atoms;
R3 is a substituted or unsubstituted alkyl, alkenyl, or aryl group having from 1 to 6 carbon atoms; and
R4 is a substituted or unsubstituted alkylene or alkenylene group having from 1 to 8 carbon atoms.