US 11,930,818 B2
Star polymers with enhanced antimicrobial activity in response to light
Victoria A. Piunova, Los Gatos, CA (US); Noah Frederick Fine Nathel, San Jose, CA (US); James L. Hedrick, Pleasanton, CA (US); Yi Yan Yang, Singapore (SG); Willy Chin, Singapore (SG); and Zhi Xiang Voo, Singapore (SG)
Assigned to INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US); and AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH, Connexis (SG)
Filed by International Business Machines Corporation, Armonk, NY (US); and Agency for Science, Technology and Research, Connexis (SG)
Filed on Jan. 9, 2020, as Appl. No. 16/738,517.
Application 16/738,517 is a division of application No. 15/824,250, filed on Nov. 28, 2017, granted, now 10,561,146.
Prior Publication US 2020/0146296 A1, May 14, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. A01N 47/06 (2006.01); A01N 25/00 (2006.01); C08G 64/02 (2006.01); C08G 64/16 (2006.01); C08G 64/42 (2006.01); C09D 5/14 (2006.01); C09D 169/00 (2006.01); C08G 83/00 (2006.01)
CPC A01N 47/06 (2013.01) [A01N 25/00 (2013.01); C08G 64/0241 (2013.01); C08G 64/1641 (2013.01); C08G 64/1658 (2013.01); C08G 64/42 (2013.01); C09D 5/14 (2013.01); C09D 169/00 (2013.01); C08G 83/004 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method, comprising:
forming a plurality of degradable polycarbonate arms by polymerizing a plurality of carbonates with a singlet oxygen generator core, wherein the singlet oxygen generator core generates a singlet oxygen species in response to being irradiated with light having a wavelength within 10 nanometers to 750 nanometers; and
generating a cationic moiety by covalently bonding a functional group with a degradable polycarbonate arm from the plurality of degradable polycarbonate arms.