Carbon‐Based Dots Co‐doped with Nitrogen and Sulfur for High Quantum Yield and Excitation‐Independent Emission1. Issue 30 (11th June 2013)

• Record Type: Journal Article
• Authors: Dong, Yongqiang; Pang, Hongchang; Yang, Hong Bin; Guo, Chunxian; Shao, Jingwei; Chi, Yuwu; Li, Chang Ming; Yu, Ting
• Is Part Of: Angewandte Chemie international edition. Volume 52:Issue 30(2013)
• Page Start: 7800
• Page End: 7804
• Publication Date: 2013-06-11
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201301114
• Languages: English
• ISSNs: 1433-7851

Abstract

<abstract abstract-type="graphical" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <p> <bold>Helpful elements</bold>: A facile bottom‐up method using citric acid and <sc>L</sc>‐cysteine as a precursor has been developed to prepare graphene quantum dots (GQDs) co‐doped with nitrogen and sulfur. A new type and high density of surface state of GQDs arises, leading to high yields (more than 70 %) and excitation‐independent emission. FLQY=fluorescence quantum yield.<boxed-text content-type="graphic" position="anchor" orientation="portrait"><graphic position="anchor" mimetype="image" xlink:href="ark:/27927/pgg270w4gr9" orientation="portrait" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></boxed-text></p> </abstract>