Yin J,
Jacobse PH,
Pyle D,
Wang Z,
Crommie MF,
*,
Dong G.
*
University of California at Berkeley, Lawrence Berkeley National Laboratory and The
University of Chicago, USA
Programmable Fabrication of Monodisperse Graphene Nanoribbons via Deterministic Iterative
Synthesis.
J. Am. Chem. Soc. 2022;
35: 16012-16019
DOI:
10.1021/jacs.2c05670
Key words
graphene - nanoribbons - cross-coupling
Significance
The accomplishment of bottom-up syntheses of graphene nanoribbons (GNRs) with controlled,
well-defined structures will open up a new stage for graphene functionalization, fabrication,
and application. Here, by introducing 1,8-diaminonaphthalene (dan) as a handy protecting group for the boronic acid to attain iterative site-selective
Suzuki–Miyaura cross-coupling (SMC), programmable fabrication of sequence-controlled
GNRs is achieved.
Comment
The developed method, so called protecting-group-aided iterative synthesis (PAIS),
is demonstrated to be suitable for the construction of tailored, monodisperse GNRs.
The masking group dan is the key to the precise sequence control, which is readily transformed into reactive
boronic acid upon exposure to acid and enables SMC for subsequent chain extension.
The final GNRs are eventually obtained upon cyclodehydrogenation, either in solution
or on the surface.
