Ultra-Narrow Low-Bandgap Graphene Nanoribbons from BromoperylenesSynthesis and Terahertz-Spectroscopy

被引：26

作者：

Jaensch, Daniel ^{[1
,2
]}

Ivanov, Ivan ^{[1
]}

Zagranyarski, Yulian ^{[1
,3
]}

Duznovic, Ivana ^{[1
,4
]}

Baumgarten, Martin ^{[1
]}

Turchinovich, Dimitry ^{[1
]}

Li, Chen ^{[1
]}

Bonn, Mischa ^{[1
]}

Muellen, Klaus ^{[1
]}

机构：

[1] Max Planck Inst Polymer Res, Ackermannweg 10, D-55128 Mainz, Germany

[2] Heidelberg Univ, InnovationLab GmbH, Organ Chem Inst, Neuenheimer Feld 270, D-69120 Heidelberg, Germany

[3] Sofia Univ St Kliment Ohridski, Fac Chem & Pharm, 1 James Bourchier Ave, Sofia 1164, Bulgaria

[4] Tech Univ Darmstadt, Alarich Weiss Str 2, D-64287 Darmstadt, Germany

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2017年 / 23卷 / 20期

关键词：

cyclodehydrogenation; graphene nanoribbons; perylene dyes; terahertz spectroscopy; Yamamoto polymerization; BOTTOM-UP SYNTHESIS; ON-SURFACE SYNTHESIS; NEAR-INFRARED ABSORPTION; TUNABLE GROUND-STATES; CARBON NANOTUBES; RYLENE; POLYARYLENES; EVOLUTION; PERYLENE; DYES;

D O I：

10.1002/chem.201605859

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Soluble ultra-narrow armchair graphene nanoribbons (AGNRs) with length of approximate to 20nm and completely fused cores exceeding 5nm in length, pronounced near-infrared (NIR) absorption up to 1400nm, and a low band gap (approximate to 0.9eV) are synthesized from 3,9(3,10)-dibromoperylene and 3,4,9,10-tetrabromoperylene. Since the monomers are obtained from perylene carboxyanhydrides, a remarkable link between dye and graphene chemistry is established. The two-step protocol for the AGNR synthesis by aryl-aryl coupling and subsequent cyclodehydrogenation is compared with a direct Yamamoto polymerization. Ultrafast photoconductivity analysis by optical pump-terahertz (THz) probe spectroscopy of the longest AGNRs excited in the NIR regime (800nm) reveal their high intrinsic charge carrier mobility.

引用

页码：4870 / 4875

页数：6

共 2 条

[1] Variability of bandgap and carrier mobility caused by edge defects in ultra-narrow graphene nanoribbons
Poljak, M.
Wang, K. L.
Suligoj, T.
SOLID-STATE ELECTRONICS, 2015, 108 : 67 - 74
[2] Exciton-dominated optical response of ultra-narrow graphene nanoribbons
Denk, Richard
Hohage, Michael
Zeppenfeld, Peter
Cai, Jinming
Pignedoli, Carlo A.
Soede, Hajo
Fasel, Roman
Feng, Xinliang
Muellen, Klaus
Wang, Shudong
Prezzi, Deborah
Ferretti, Andrea
Ruini, Alice
Molinari, Elisa
Ruffieux, Pascal
NATURE COMMUNICATIONS, 2014, 5

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