期刊
ACS NANO
卷 7, 期 11, 页码 10335-10343出版社
AMER CHEMICAL SOC
DOI: 10.1021/nn404746h
关键词
graphene; strain; chemical functionalization; reactivity; diazonium
类别
资金
- JSPS Funding Program for Next Generation World-Leading Researchers (NEXT Program) [GR075]
- CREST-BT
- Grants-in-Aid for Scientific Research [25286003] Funding Source: KAKEN
Control over chemical reactivity is essential in the field of nanotechnology. Graphene is a two-dimensional atomic sheet of sp(2) hybridized carbon with exceptional properties that can be altered by chemical functionalization. Here, we transferred single-layer graphene onto a flexible substrate and investigated the functionalization using different aryl diazonium molecules while applying mechanical strain. We found that mechanical strain can alter the structure of graphene, and dramatically increase the reaction rate, by a factor of up to 10, as well as increase the final degree of functionalization. Furthermore, we demonstrate that mechanical strain enables functionalization of graphene for both p- and n-type dopants, where unstrained graphene showed negligible reactivity. Theoretical calculations were also performed to support the experimental findings. Our findings offer a simple approach to control the chemical reactivity of graphene through the application of mechanical strain, allowing for a tuning of the properties of graphene.
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