journal article·2020-04-14

Solvent-Dependent Core-Modified Rubyrin Self-Assembly at Liquid/Solid Interfaces

Chen Chen, Siqi Zhang, Bin Tu, Ting Meng, Jianqiao Li, Yuxin Qian, Pengfei Li, Bo Liu, Wubiao Duan, Haijun Xu, Fengying Zhao, Yang Peng, Jing Li, Qingdao Zeng

Langmuir· Volume 36· Issue 14
Publisher page

Abstract

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 solvent-dependent 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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Research context

OpenAlex topics: Porphyrin and Phthalocyanine Chemistry · Porphyrin Metabolism and Disorders · Surface Chemistry and Catalysis

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Chemistry, School of Science, Beijing Jiaotong University, Beijing 100044, China

CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, China

College of Chemical Engineering Jiangsu Key Lab of Biomass-based Green Fuels and Chemicals, Nanjing Forestry University, Nanjing 210037, China

Jiangxi College of Applied Technology, Ganzhou 341000, China

Engineering Research Center of Nano-Geo Materials of Ministry of Education, China University of Geosciences, Wuhan 430074, China

Center of Materials Science and Optoelectonics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

Funding

Ministry of Science and Technology of the People's Republic of China · National Natural Science Foundation of China · Engineering Research Center of Nano Geomaterials of Ministry of Education, China University of Geosciences

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