期刊
CHEMISTRY-AN ASIAN JOURNAL
卷 17, 期 11, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/asia.202200220
关键词
polyphenylene; dendrimer; Diels-Alder reaction; electrospray; nanographene
资金
- Max Planck Society
- EC through the Marie Sklodowska-Curie ITN project iSwitch [GA-642196]
- FLAG-ERA Grant OPERA by DFG [437130745]
- Swiss National Science Foundation (SNF)
- Swiss Nanoscience Institute (SNI)
- European Research Council (ERC) under the European Union [834402]
- Gutenberg Research College, Johannes Gutenberg University Mainz
- Projekt DEAL
- European Research Council (ERC) [834402] Funding Source: European Research Council (ERC)
This study reports the synthesis of two giant dendritic PPs using a layer-by-layer extension strategy, and the successful deposition of these PPs on metal substrates. Scanning probe microscopy imaging provides valuable information on the possible thermally induced partial planarization of these giant dendritic PPs on a metal surface.
Dendritic polyphenylenes (PPs) can serve as precursors of nanographenes (NGs) if their structures represent 2D projections without overlapping benzene rings. Here, we report the synthesis of two giant dendritic PPs fulfilling this criteria with 366 and 546 carbon atoms by applying a layer-by-layer extension strategy. Although our initial attempts on their cyclodehydrogenation toward the corresponding NGs in solution were unsuccessful, we achieved their deposition on metal substrates under ultrahigh vacuum through the electrospray technique. Scanning probe microscopy imaging provides valuable information on the possible thermally induced partial planarization of such giant dendritic PPs on a metal surface.
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