期刊
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
卷 12, 期 14, 页码 3545-3551出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.1c00230
关键词
-
类别
资金
- National Natural Science Foundation of China [61971035, 61901038, 61725107, 61922035, 11874171]
- National Key Research and Development Program of China [2019YFA0308000, 2020YFA0308800]
- Beijing Natural Science Foundation [Z190006, 4192054]
- China Postdoctoral Science Foundation [2020M680382]
In this study, we investigated the adsorption and arrangement differences of molecular superlattices on 2H-NbSe2 and 1T-NbSe2 crystals under distinct CDW patterns. We found a perfect geometric commensurability between the molecular superlattice and intrinsic CDW pattern in 2H-NbSe2, while a poor commensurability in 1T-NbSe2. This subtly different geometric commensurability dominates the different adsorption and arrangement of the molecular superlattices on 2D CDW patterns.
Charge density wave (CDW) in two-dimensional (2D) crystals plays a vital role in tuning the interface structures and properties. However, how the CDW tunes the self-assembled molecular superlattice still remains unclear. In this study, we investigated the self-assembled manganese phthalocyanine (MnPc) molecular superlattice on single-layered 1T- and 2H-NbSe2 crystals under regulation by distinct CDW patterns. We observe that, in low coverage, MnPc molecules preferentially adsorb on 2H-NbSe2 compared to 1T-NbSe2. With increasing coverage, MnPc can form a highly ordered superlattice on 2H-NbSe2; however, it is randomly distributed on 1T-NbSe2. We reveal a perfect geometric commensurability between the molecular superlattice and intrinsic CDW pattern in 2H-NbSe2 and a poor commensurability for that of 1T-NbSe2. We believe that the subtly different geometric commensurability dominates the different adsorption and arrangement of the molecular superlattices on 2D CDW patterns. Our study provides a pioneering approach for tuning the molecular superlattices using the CDW patterns.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据