title: Investigating the Co-Adsorption Behavior of Nucleic-Acid Base (Thymine and Cytosine) and Melamine at Liquid/Solid Interface.
abstract: The co-adsorption behavior of nucleic-acid base (thymine; cytosine) and melamine was investigated by scanning tunneling microscopy (STM) technique at liquid/solid (1-octanol/graphite) interface. STM characterization results indicate that phase separation happened after dropping the mixed solution of thymine-melamine onto highly oriented pyrolytic graphite (HOPG) surface, while the hetero-component cluster-like structure was observed when cytosine-melamine binary assembly system is used. From the viewpoints of non-covalent interactions calculated by using density functional theory (DFT) method, the formation mechanisms of these assembled structures were explored in detail. This work will supply a methodology to design the supramolecular assembled structures and the hetero-component materials composed by biological and chemical compound.
authors.affiliation: Institute of Photo-biophysics, School of Physics and Electronics, Henan University, Kaifeng, 475004, People's Republic of China.
authors.forename: Huiling
authors.identifier: http://orcid.org/0000-0001-9687-8181
authors.initials: H
authors.lastname: Zhao
authors.affiliation: Institute of Photo-biophysics, School of Physics and Electronics, Henan University, Kaifeng, 475004, People's Republic of China.
authors.forename: Yinli
authors.initials: Y
authors.lastname: Li
authors.affiliation: Institute of Photo-biophysics, School of Physics and Electronics, Henan University, Kaifeng, 475004, People's Republic of China.
authors.forename: Dong
authors.initials: D
authors.lastname: Chen
authors.affiliation: Institute of Photo-biophysics, School of Physics and Electronics, Henan University, Kaifeng, 475004, People's Republic of China. boliu@henu.edu.cn.
authors.forename: Bo
authors.initials: B
authors.lastname: Liu
keywords: Binary self-assembly; Hetero-compound; Hydrogen binding; Intermolecular recognition