4.8 Review

Building Tailored Interfaces through Covalent Coupling Reactions at Layers Grafted from Aryldiazonium Salts

期刊

ACS APPLIED MATERIALS & INTERFACES
卷 13, 期 10, 页码 11545-11570

出版社

AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c22387

关键词

click; cross-coupling; amide; postfunctionalization; on-surface chemistry

资金

  1. Royal Society of New Zealand Marsden Fund [UOC1711]

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Aryldiazonium ions are widely used for surface modification due to their wide substrate compatibility, formation of stable covalent bonding, simple modification methods, and commercial availability of aniline precursors. This method allows for further on-surface chemistry and broadens the range of species that can be immobilized. The resulting materials have been applied in various fields such as chemical sensors, biosensors, catalysis, optoelectronics, composite materials, and energy conversion and storage.
Aryldiazonium ions are widely used reagents for surface modification. Attractive aspects of their use include wide substrate compatibility (ranging from plastics to carbons to metals and metal oxides), formation of stable covalent bonding to the substrate, simplicity of modification methods that are compatible with organic and aqueous solvents, and the commercial availability of many aniline precursors with a straightforward conversion to the active reagent. Importantly, the strong bonding of the modifying layer to the surface makes the method ideally suited to further on-surface (postfunctionalization) chemistry. After an initial grafting from a suitable aryldiazonium ion to give an anchor layer, a target species can be coupled to the layer, hugely expanding the range of species that can be immobilized. This strategy has been widely employed to prepare materials for numerous applications including chemical sensors, biosensors, catalysis, optoelectronics, composite materials, and energy conversion and storage. In this Review our goal is first to summarize how a target species with a particular functional group may be covalently coupled to an appropriate anchor layer. We then review applications of the resulting materials.

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