Fabrication of a complex two-dimensional adenine–perylene-3,4,9,10-tetracarboxylic dianhydride chiral nanoarchitecture through molecular self-assembly

Sun, Xiaonan and Mura, Manuela and Jonkman, Harry T. and Kantorovich, Lev N. and Silly, Fabien (2012) Fabrication of a complex two-dimensional adenine–perylene-3,4,9,10-tetracarboxylic dianhydride chiral nanoarchitecture through molecular self-assembly. The Journal of Physical Chemistry C, 116 (3). pp. 2493-2499. ISSN 1932-7447

Full content URL: http://dx.doi.org/10.1021/jp2095054

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Fabrication of a complex two-dimensional adenine–perylene-3,4,9,10-tetracarboxylic dianhydride chiral nanoarchitecture through molecular self-assembly

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Abstract

The two-dimensional self-assembly of a nonsyrnmetric adenine DNA base mixed with symmetric perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA) molecules is investigated using scanning tunneling microscopy (STM). We experimentally observe that these two building blocks form a complex close-packed chiral supramolecular network on Au(111). The unit cell of the adenine PTCDA nanoarchitecture is composed of 14 molecules. The high stability of this structure relies on PTCDA-PTCDA and PTCDA-adenine hydrogen bonding. Detailed theoretical analysis based on the density functional theory (DFT) calculations reveals that adenine molecules work as a "glue", providing additional strengthening to the PTCDA-based skeleton of this sophisticated multicomponent nanoarchitecture. At the same time, we find that orientation and chirality of adenine molecules across the monolayer is likely to vary, leading to a disorder in the atomistic structure of the entire assembly.

Keywords:density-functional theory, homopairing possibilities, Supramolecular networks, melamine, surface, DNA, Au(111) surface, dimensions, uracil, robust
Subjects:F Physical Sciences > F300 Physics
Divisions:College of Science > School of Mathematics and Physics
ID Code:16701
Deposited On:18 Feb 2015 15:16

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