MUMBAI, India, Sept. 26 -- Intellectual Property India has published a patent application (202411019849 A) filed by Council Of Scientific And Industrial Research, New Delhi, on March 15, 2024, for 'one-pot, single-step ultrasonication method for preparation of white-light-emitting graphene quantum dots from coal soot.'
Inventor(s) include Vikram Singh; Shiv Rag Mishra; and Tuhin Mandal.
The application for the patent was published on Sept. 26, under issue no. 39/2025.
According to the abstract released by the Intellectual Property India: "A one-pot and single-step ultrasonic method to synthesize white-light-emitting graphene quantum dots from coal soot in just 2 minutes at room temperature. The white-light emission is achieved in solution and polymeric film with good Commission Internationale del'Eclairage (CIE) index (0.28, 0.33) and (0.25, 0.30), respectively. The graphene quantum dots cover a significant fraction of the visible region in the emission spectrum with two prominent bands at 475 and 635 nm at 380 nm photoexcitation, corresponding to monomer and J-aggregate emission. The strong reducing and basic nature of the ethylene diamine facilitated the preparation of self-assembled J-aggregate graphene quantum dots through hydrogen bonding and electrostatic interaction. Apart from optoelectronics application, the prepared graphene quantum dots have a tremendous application in the fields of biomedical (bioimaging, drug carriers, theranostics, etc.), anti-counterfeiting coatings, sensing, device preparation, solar cells and light-harvesting application."
Disclaimer: Curated by HT Syndication.
