US 12,435,166 B2
Polymer glass transition temperature manipulation via z/e hydrazone photoswitching
Ivan Abrahamian, Hanover, NH (US); Sirun Yang, Hanover, NH (US); Laura L. Jeliazkov, Hanover, NH (US); and Jared D. Harris, Hanover, NH (US)
Assigned to Trustees of Dartmouth College, Hanover, NH (US)
Filed by Trustees of Dartmouth College, Hanover, NH (US)
Filed on Apr. 18, 2024, as Appl. No. 18/638,853.
Application 18/638,853 is a continuation of application No. 18/085,404, filed on Dec. 20, 2022, granted, now 11,987,654.
Application 18/085,404 is a continuation of application No. 17/017,222, filed on Sep. 10, 2020, granted, now 11,566,089.
Claims priority of provisional application 62/899,991, filed on Sep. 13, 2019.
Prior Publication US 2024/0287218 A1, Aug. 29, 2024
Int. Cl. C08F 20/36 (2006.01); C08F 8/48 (2006.01); C08F 16/28 (2006.01); C08F 18/22 (2006.01); C08F 20/34 (2006.01); C08F 22/22 (2006.01); C08F 220/30 (2006.01); C08F 220/34 (2006.01); C08F 220/36 (2006.01); C08F 222/22 (2006.01); C08F 20/60 (2006.01); C08F 120/34 (2006.01); C08F 120/36 (2006.01); C08F 120/60 (2006.01); C08F 122/16 (2006.01); C08F 122/22 (2006.01); C08F 212/14 (2006.01); C08F 218/00 (2006.01)
CPC C08F 20/36 (2013.01) [C08F 8/48 (2013.01); C08F 16/28 (2013.01); C08F 18/22 (2013.01); C08F 20/34 (2013.01); C08F 22/22 (2013.01); C08F 220/30 (2013.01); C08F 220/34 (2013.01); C08F 220/36 (2013.01); C08F 222/22 (2013.01); C08F 20/60 (2013.01); C08F 120/34 (2013.01); C08F 120/36 (2013.01); C08F 120/60 (2013.01); C08F 122/16 (2013.01); C08F 122/22 (2013.01); C08F 212/26 (2020.02); C08F 218/22 (2020.02); C08F 222/225 (2020.02)] 13 Claims
OG exemplary drawing
 
1. A method of forming a polymer comprising a light-adjustable glass transition temperature (Tg), said method comprising:
covalently linking at least one hydrazone-containing compound to a polymer, wherein the hydrazone-containing compound linked to the polymer comprises:

OG Complex Work Unit Chemistry
 or combinations thereof,
wherein at least one of Y and R1 comprises the polymer, and
wherein Y, R1 and R2 are each independently selected from the group consisting of H, alkyl groups, alkenyl groups, alkoxy groups, aryl groups, ketone groups, amine groups, amide groups, carboxyl groups, carboxylic acid groups, ester groups, thiol groups, sulfoxide groups, alcohol groups, alkyne groups, azide groups, CH2CH3, C(CH3)3, (CH2)5CH3, (CH2)7CH3, (CH2)9CH3, (CH2)11CH3, (CH2)1-20CH3, t-butyl, n-hexyl, n-octyl, n-decyl, n-dodecyl and combinations thereof.