Graphene Nanoribbon Core Thermotropic Liquid Crystal with a Well-Defined Molecular Structure

被引：0

作者：

Hu, Jun ^{[1
]}

Yu, Zhen ^{[1
,2
]}

Yang, Yong ^{[1
]}

Huang, Jiaxiang ^{[1
]}

Liu, Zhiyang ^{[1
]}

Huang, Shuai ^{[1
]}

Wang, Meng ^{[1
]}

Yang, Hong ^{[1
]}

机构：

[1] Southeast Univ, Sch Chem & Chem Engn, State Key Lab Digital Med Engn, Nanjing 211189, Jiangsu, Peoples R China

[2] Univ Jinan, Sch Chem & Chem Engn, Jinan 250022, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2025年

基金：

中国国家自然科学基金;

关键词：

Alignment; Discotic liquid crystal; Graphene nanoribbon; Hexagonal columnar phase; Thermotropic liquid crystal; CHARGE-CARRIER MOBILITY; GAUSSIAN-TYPE BASIS; ORBITAL METHODS; TRANSPORT; ALIGNMENT; FILMS;

D O I：

10.1002/anie.202501161

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Graphene nanoribbons (GNRs) with hierarchical and well-ordered structures are believed to deliver superior performance in semiconductor device applications. Despite this potential, traditional alignment techniques for GNRs often fall short in producing defect-free and precisely defined molecular architectures. Here, we introduce a strategy for the fabrication of highly ordered GNR by empowering them with thermotropic liquid crystallinity, utilizing a bottom-up solution synthesis approach. The resulting GNR liquid crystal (GNR-LC) molecule can self-assemble into a hexagonal columnar phase. The homeotropic alignment of GNR-LC is enabled by the intrinsic self-assembly capabilities of the thermotropic liquid crystalline state, thereby forming 1D charge transport pathways. Devices incorporating GNR-LC have demonstrated significantly enhanced hole mobility, reaching up to 2.4 cm2 V-1 s-1, underscoring their viability as organic semiconductors for optoelectronic applications.

引用

页数：8