@article{Sun2022, 
author = {Qiang Sun and Hao Jiang and Yuyi Yan and Roman Fasel and Pascal Ruffieux},
title = {Molecular heterostructure by fusing graphene nanoribbons of different lengths through a pentagon ring junction},
year = {2022},
journal = {Nano Research},
volume = {15},
number = {9},
pages = {8465-8469},
keywords = {graphene nanoribbons (GNRs), scanning tunneling spectroscopy (STS), non-contact atomic force microscopy (nc-AFM), tight-binding (TB) calculations, junction structure},
url = {https://www.sciopen.com/article/10.1007/s12274-022-4410-7},
doi = {10.1007/s12274-022-4410-7},
abstract = {Graphene nanoribbons (GNRs) have attracted great research interest because of their widely tunable and unique electronic properties. The required atomic precision of GNRs can be realized via on-surface synthesis method. In this work, through a surface assisted reaction we have longitudinally fused the pyrene-based graphene nanoribbons (pGNR) of different lengths by a pentagon ring junction, and built a molecular junction structure on Au (111). The electronic properties of the structure are studied by scanning tunneling spectroscopy (STS) combined with tight binding (TB) calculations. The pentagon ring junction shows a weak electronic coupling effect on graphene nanoribbons, which makes the electronic properties of the two different graphene nanoribbons connected by a pentagon ring junction analogous to type I semiconductor heterojunctions.}
}