US 11,932,970 B2
Electrospun nanofibers
Christopher M. Hoffman, Jr., Odenton, MD (US); Matthew P. Yeager, Huntsville, AL (US); Morgana M. Trexler, Baltimore, MD (US); Zhiyong Xia, Rockville, MD (US); Douglas A. Smith, Washington, DC (US); and Marcia W. Patchan, Columbia, MD (US)
Filed by The Johns Hopkins University, Baltimore, MD (US)
Filed on Aug. 28, 2019, as Appl. No. 16/553,232.
Claims priority of provisional application 62/792,989, filed on Jan. 16, 2019.
Prior Publication US 2020/0224335 A1, Jul. 16, 2020
Int. Cl. D01F 6/60 (2006.01); D04H 1/728 (2012.01)
CPC D01F 6/605 (2013.01) [D04H 1/728 (2013.01); D10B 2331/021 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A nanofiber, comprising: a polyamide including at least one substituted phenyl group; wherein the nanofiber has an average diameter from 50 to 1000 nm; and wherein the polyamide comprises a reaction of at least a Monomer A and a Monomer B that defines a first repeating unit, wherein the polyamide comprises a plurality of first repeating units, and wherein the first repeating unit comprises a structure according to Formula (1):

OG Complex Work Unit Chemistry
wherein R1, R2, R3, and R4 are each independently selected from H, a halogen, a saturated aliphatic radical having from 1 to 30 carbon atoms, an unsaturated aliphatic radical having from 1 to 30 carbon atoms, a nitro group, a carboxylic acid radical, or an ether radical; and wherein R1 and R2 are each a chlorine atom, or R3 and R4 are each a chlorine atom.