Optical Properties of Graphene Nanoribbons Encapsulated in Single-Walled Carbon Nanotubes

被引：79

作者：

Chernov, Alexander I. ^{[1
]}

Fedotov, Pavel V. ^{[1
]}

Talyzin, Alexandr V. ^{[2
]}

Lopez, Inma Suarez ^{[1
]}

Anoshkin, Ilya V. ^{[3
]}

Nasibulin, Albert G. ^{[3
]}

Kauppinen, Esko I. ^{[3
]}

Obraztsova, Elena D. ^{[1
]}

机构：

[1] Russian Acad Sci, AM Prokhorov Gen Phys Inst, Moscow 119991, Russia

[2] Umea Univ, Dept Phys, S-90187 Umea, Sweden

[3] Aalto Univ, Sch Sci, Dept Appl Phys, FI-00076 Espoo, Finland

来源：

ACS NANO | 2013年 / 7卷 / 07期

基金：

芬兰科学院; 瑞典研究理事会;

关键词：

single-walled carbon nanotubes; graphene nanoribbons; coronene; photoluminescence; one-dimensional graphene structure; ELECTRONIC-STRUCTURE; CORONENE; PHOTOLUMINESCENCE; FLUORESCENCE; SIZE;

D O I：

10.1021/nn4024152

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report the photoluminescence (PL) from graphene nanoribbons (GNRs) encapsulated in single-walled carbon nanotubes (SWCNTs). New PL spectral features originating from GNRs have been detected in the visible spectral range. PL peaks from GNRs have resonant character, and their positions depend on the ribbon geometrical structure in accordance with the theoretical predictions. GNRs were synthesized using confined polymerization and fusion of coronene molecules. GNR@SWCNTs material demonstrates a bright photoluminescence both in infrared (IR) and visible regions. The photoluminescence excitation mapping in the near-IR spectral range has revealed the geometry-dependent shifts of the SWCNT peaks (up to 11 meV in excitation and emission) after the process of polymerization of coronene molecules inside the nanotubes. This behavior has been attributed to the strain of SWCNTs induced by insertion of the coronene molecules.

引用

页码：6346 / 6353

页数：8

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