	US 11,873,433 B2
	Near-infrared emissive graphene quantum dots method of manufacture and uses thereof
Anton V. Naumov, Arlington, TX (US); and Tanvir Hasan, Fort Worth, TX (US)
Assigned to Texas Christian University, Fort Worth, TX (US)
Filed by Texas Christian University, Fort Worth, TX (US)
Filed on Feb. 26, 2021, as Appl. No. 17/249,331.
Claims priority of provisional application 62/983,191, filed on Feb. 28, 2020.
Prior Publication US 2021/0269711 A1, Sep. 2, 2021
Int. Cl. C09K 11/65 (2006.01); C01B 32/184 (2017.01); B82Y 40/00 (2011.01); B82Y 20/00 (2011.01)

CPC C09K 11/65 (2013.01) [C01B 32/184 (2017.08); B82Y 20/00 (2013.01); B82Y 40/00 (2013.01)]

9 Claims

1. A method for producing a near-infrared emitting graphene quantum dot, the method comprising the steps of:

forming a homogenous suspension of water, reduced graphene oxide in a concentration of 0.2 mg/ml and 1.5 ml of a 5 volume % solution of sodium hypochlorite;

then exposing/irradiating the suspension with UV radiation of 302 nm for 2 hours to thereby form a graphene quantum dot;

wherein the graphene quantum dot so formed exhibits fluorescence emission in the near-infrared region.