期刊
LANGMUIR
卷 36, 期 14, 页码 3879-3886出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.langmuir.9b03867
关键词
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资金
- National Basic Research Program of China [2016YFA0200700]
- National Natural Science Foundation of China [21773041, 21972031]
- Science and Technology Project of Jiangxi Provincial Department of Education and the Engineering Research Center of Nano Geomaterials of Ministry of Education [NGM2018KF001, NGM2018KF004]
Scanning tunneling microscopy (STM) was utilized to disclose four novel core-modified rubyrin self-assembly behaviors on the highly-oriented pyrolytic graphite (HOPG) surface, of which N2S4-OR(1)/N2Se4-OR(2) had no phenanthrene pyrrole ring and N2S4-OR(3)/N2Se4-OR(4) had phenanthrene-fused pyrrole rings and meso-aryl substituents. It was discovered that the core-modified rubyrin could self-assemble into either face-on or edge-on monolayer structures selectively at the liquid/HOPG interface in different solvents. There was an obvious solventdependent self-assembly for N2S4-OR(3)/N2Se4-OR(4), which adopted an edge-on and face-on structure in 1-phenyloctane and 1-heptanoic acid solvents, respectively, whereas N2S4-OR(1)/ N2Se4-OR(2) showed no obvious difference in the assembly structure, which both adopted a face-on structure in the two solvents. Density functional theory (DFT) calculations were also utilized to reveal the relevant self-assembly mechanisms. This study shows a typical solvent effect regulating core-modified rubyrin self-assembly, which is essential for porphyrin-based functional devices' design and manufacture.
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