	US 12,280,150 B2
	Light upconversion silica particles
Jason T. Wertz, Pleasant Valley, NY (US); Brandon M. Kobilka, Fishkill, NY (US); Sarah K. Czaplewski-Campbell, Rochester, MN (US); and Eric J. Campbell, Rochester, MN (US)
Assigned to International Business Machines Corporation, Armonk, NY (US)
Filed by International Business Machines Corporation, Armonk, NY (US)
Filed on Aug. 7, 2020, as Appl. No. 16/988,191.
Prior Publication US 2022/0040108 A1, Feb. 10, 2022
Int. Cl. A61K 9/14 (2006.01); A61K 47/69 (2017.01); B01J 31/22 (2006.01); C09K 11/06 (2006.01); G02B 1/04 (2006.01)

CPC A61K 9/146 (2013.01) [A61K 47/6923 (2017.08); B01J 31/22 (2013.01); C09K 11/06 (2013.01); G02B 1/04 (2013.01)]

10 Claims

1. A method, comprising:

obtaining sidechain-modified light upconversion molecules comprising a molecular sensitizer and a molecular annihilator;

incorporating the sidechain-modified light upconversion molecules into silica particles to form light upconversion particles;

providing a reaction mixture comprising a photocatalyst and a photocatalytic reaction substrate;

suspending the light upconversion particles in the reaction mixture to obtain a photocatalytic system; and

exciting the photocatalyst via light upconverted by the sidechain-modified light upconversion molecules.