Charge‐Transport Tuning of Solution‐Processable Graphene Nanoribbons by Substitutional Nitrogen Doping. Issue 23 (23rd September 2013)

• Record Type: Journal Article
• Authors: Kim, Kyung Tae; Lee, Jong Won; Jo, Won Ho
• Is Part Of: Macromolecular chemistry and physics. Volume 214:Issue 23(2013:Dec.)
• Page Start: 2768
• Page End: 2773
• Publication Date: 2013-09-23
• Subjects: Polymers -- Periodicals; Polymerization -- Periodicals; Synthetic products -- Periodicals; Macromolecules -- Periodicals; 547.7
• DOI: 10.1002/macp.201300529
• Languages: English
• ISSNs: 1022-1352

Abstract

<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <p>Novel nitrogen‐doped graphene nanoribbons (GNR‐Ns) are synthesized by the coupling reaction between a pyrazine (or benzene) derivative and naphthalene followed by cyclodehydrogenation. The amount of nitrogen doping in the GNR‐Ns is controlled by changing the monomer feed ratio of pyrazine to benzene for polymerization. The electron mobility of the GNR‐Ns increases while the hole mobility decreases, as the amount of nitrogen doping in the GNR increases, indicating that the charge‐transport behavior of GNRs is changed from ambipolar to an <italic>n</italic>‐type semiconductor. The threshold voltage of the GNR‐Ns also shifts from 20 to −6 V as the amount of nitrogen doping increases. <boxed-text content-type="graphic" position="anchor" orientation="portrait"><graphic position="anchor" mimetype="image" xlink:href="ark:/27927/pgg3z8rt5bh" orientation="portrait" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></boxed-text></p> </abstract>