Bottom‐Up Synthesis of Necklace‐Like Graphene Nanoribbons. Issue 10 (2nd July 2015)

• Record Type: Journal Article
• Authors: Schwab, Matthias Georg; Narita, Akimitsu; Osella, Silvio; Hu, Yunbin; Maghsoumi, Ali; Mavrinsky, Alexey; Pisula, Wojciech; Castiglioni, Chiara; Tommasini, Matteo; Beljonne, David; Feng, Xinliang; Müllen, Klaus
• Is Part Of: Chemistry, an Asian journal. Volume 10:Issue 10(2015:Oct.)
• Page Start: 2134
• Page End: 2138
• Publication Date: 2015-07-02
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1002/asia.201500450
• Languages: English
• ISSNs: 1861-4728

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Graphene nanoribbons (GNRs) with an unprecedented "necklace‐like" structure were synthesized through a bottom‐up chemical approach, based on the oxidative cyclodehydrogenation of tailor‐made polyphenylene precursors. A polycyclic aromatic hydrocarbon consisting of 84 sp² carbons (<bold>C84</bold>) was also synthesized and characterized as a model compound. Characterizations by a combination of MALDI‐TOF MS and FTIR, Raman, and UV/Vis absorption spectroscopy validated the formation of the necklace‐like GNRs. The absorption spectrum and DFT calculations revealed a bandgap of approximately 1.4 eV for this novel GNR system, which has not been attained with other GNR structures, enabling further fine‐tuning of GNR bandgaps by structural modulation.</p> </abstract>