期刊
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
卷 -, 期 -, 页码 -出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.2c02810
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资金
- National Natural Science Foundation of China [21925201, 22272050, 22161160319, 22002044, 21978049]
- Shanghai Municipal Science and Technology Qi Ming Xing Project [22QA1403000]
- Natural Science Foundation of Shanghai [20ZR1414200]
- Fundamental Research Funds for the Central Universities
- Program for Easter n Scholar Distinguished Professor
Dendronized polymers (DPs) are composed of a linear polymeric backbone with dendritic side chains, and the fine-tuning of the functional groups in the side chains enriches the structural versatility and imparts novel physical properties to DPs. In this study, the first on-surface synthesis of DPs on Au(111) was achieved via postfunctionalization, and the surface confinement effects on the planar conformation and chiral configurations were characterized.
Dendronized polymers (DPs) consist of a linear polymeric backbone with dendritic side chains. Fine-tuning of the functional groups in the side chains enriches the structural versatility of the DPs and imparts a variety of novel physical properties. Herein, the first on-surface synthesis of DPs is achieved via the postfunctionalization of polymers on Au(111), in which the surface-confinement-induced planar conformation and chiral configurations were unambiguously characterized. While the dendronized monomer was synthesized in situ on Au(111), the subsequent polymerization afforded only short, cross-linked DP chains owing to multiple side reactions. The postfunctionalization approach selectively produced brominated polyphenylene backbone moieties by the deiodination polymerization of 4-bromo-4 ''- iodo-5 '-(4-iodophenyl)-1,1 ':3 ',1 ''-terphenyl on Au(111), which smoothly underwent divergent cross-coupling reactions with two different isocyanides to form two types of DPs as individual long chains.
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