A facile method for the synthesis of free-standing pillar[5]arene-based two-dimensional covalent organic monolayers in solution |
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| Authors: | Hui Qiang Tao Chen Yahu A. Liu Xue-Shun Jia |
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| Affiliation: | 1. Shanghai University, college of science, Shanghai, China;2. Shanghai Advanced Research Institute, Chinese Academy of Science, Shanghai, China;3. University of Chinese Academy of Sciences, Beijing, P. R. China!["ORCID]("//:0" "\"ORCID") https://orcid.org/0000-0001-6110-9112;4. Medicinal Chemistry, ChemBridge Research Laboratories, San Diego, CA, USA |
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| Abstract: | ABSTRACTThis report describes a facile method by which, without using any surface-assisted growth or pre-organisation, free-standing two-dimensional (2D) covalent organic monolayers (COMs) were synthesised through condensation reactions of planar tri-aldehydes with A1/A2-diamino-substituted pillar[5]arene (DAP5). In the as-formed monolayers (DAP5-COM-1 and DAP5-COM-2), the tubular pentagonal pillar[5]arene units positioned out of the 2D polymer planes suppress efficiently the interlayer π-π stacking interactions. Both DAP5-COM-1 and DAP5-COM-2 can be transferred onto solid surfaces for further characterisation and were found to possess unusual fluorescence up-conversion property. |
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| Keywords: | Covalent organic monolayers free-standing pillar[5]arene |
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!["ORCID]({"type":"image","src":"/templates/jsp/images/orcid.png"} "\"ORCID")
https://orcid.org/0000-0001-6110-9112;4. Medicinal Chemistry, ChemBridge Research Laboratories, San Diego, CA, USA