Atomically precise edge chlorination of nanographenes and its application in graphene nanoribbons

被引：197

作者：

Tan, Yuan-Zhi ^{[1
]}

Yang, Bo ^{[1
]}

Parvez, Khaled ^{[1
]}

Narita, Akimitsu ^{[1
]}

Osella, Silvio ^{[2
]}

Beljonne, David ^{[2
]}

Feng, Xinliang ^{[1
]}

Muellen, Klaus ^{[1
]}

机构：

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

[2] Univ Mons, Lab Chem Novel Mat, B-7000 Mons, Belgium

来源：

NATURE COMMUNICATIONS | 2013年 / 4卷

关键词：

POLYCYCLIC AROMATIC-HYDROCARBONS; CRYSTAL; FUNCTIONALIZATION; TRANSISTORS; CHEMISTRY; GRAPHITE; COVALENT;

D O I：

10.1038/ncomms3646

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Chemical functionalization is one of the most powerful and widely used strategies to control the properties of nanomaterials, particularly in the field of graphene. However, the ill-defined structure of the present functionalized graphene inhibits atomically precise structural characterization and structure-correlated property modulation. Here we present a general edge chlorination protocol for atomically precise functionalization of nanographenes at different scales from 1.2 to 3.4 nm and its application in graphene nanoribbons. The well-defined edge chlorination is unambiguously confirmed by X-ray single-crystal analysis, which also discloses the characteristic non-planar molecular shape and detailed bond lengths of chlorinated nanographenes. Chlorinated nanographenes and graphene nanoribbons manifest enhanced solution processability associated with decreases in the optical band gap and frontier molecular orbital energy levels, exemplifying the structure-correlated property modulation by precise edge chlorination.

引用

页数：7

共 36 条

[1] Large-Area Graphene Films by Simple Solution Casting of Edge-Selectively Functionalized Graphite [J].