Periodic Reporting for period 3 - e-Sequence (e-Sequence: a sequential approach to engineer heteroatom doped graphene nanoribbons for electronic applications)
Période du rapport: 2020-11-01 au 2022-04-30
Graphene nanoribbons (NR) are quasi-1D nanostructures with discrete band gaps, ballistic conduction, and one-atom thickness. Such properties make them ideal candidates to develop low-dimensional semiconductors, which are essential components in nanoelectronics. Atomically-precise control over the structure of NR (width, length, edge, doping) is crucial to fully exploit their potential. However, current approaches for the synthesis of NR suffer from several drawbacks that do not allow attaining such level of precision, therefore alternative methods need to be sought.
e-Sequence will develop an unprecedented approach that assembles stepwise small molecular building blocks into NR to specifically target the most important challenges in NR synthesis. Such approach will enable the preparation of an unlimited number of NR with atomically-precise control over their structure, exceeding the limits of existing methods.
e-Sequence will develop an unprecedented approach that assembles stepwise small molecular building blocks into NR to specifically target the most important challenges in NR synthesis. Such approach will enable the preparation of an unlimited number of NR with atomically-precise control over their structure, exceeding the limits of existing methods.
We have developed a new iterative approach that assembles a small and carefully designed molecular building blocks into monodisperse nanoribbons and nanographenes with different edges and dimensions.
To showcase this approach, we report the synthesis and characterisation of a series of nanoribbons constituted of with record lengths up to 7.7 nm and of a new family of giant star-shaped nanographenes with diameters up to 6.5 nm