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- Title
Bilayer Molecular Assembly at a Solid/Liquid Interface as Triggered by a Mild Electric Field.
- Authors
Zheng, Qing ‐ Na; Liu, Xuan ‐ He; Liu, Xing ‐ Rui; Chen, Ting; Yan, Hui ‐ Juan; Zhong, Yu ‐ Wu; Wang, Dong; Wan, Li ‐ Jun
- Abstract
The construction of a spatially defined assembly of molecular building blocks, especially in the vertical direction, presents a great challenge for surface molecular engineering. Herein, we demonstrate that an electric field applied between an STM tip and a substrate triggered the formation of a bilayer structure at the solid-liquid interface. In contrast to the typical high electric-field strength (109 Vm-1) used to induce structural transitions in supramolecular assemblies, a mild electric field (105 Vm-1) triggered the formation of a bilayer structure of a polar molecule on top of a nanoporous network of trimesic acid on graphite. The bilayer structure was transformed into a monolayer kagome structure by changing the polarity of the electric field. This tailored formation and large-scale phase transformation of a molecular assembly in the perpendicular dimension by a mild electric field opens perspectives for the manipulation of surface molecular nanoarchitectures.
- Subjects
SOLID-liquid interfaces; ELECTRIC fields; SURFACE chemistry; SUPRAMOLECULAR chemistry; NANOPOROUS materials
- Publication
Angewandte Chemie, 2014, Vol 126, Issue 49, p13613
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201406523