Fig. 1: Schematic illustration of the synthetic steps for the generation of porous [18]-annulene GNRs.
From: On-surface synthesis of porous graphene nanoribbons mediated by phenyl migration
![Fig. 1: Schematic illustration of the synthetic steps for the generation of porous [18]-annulene GNRs.](http://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fs42004-024-01284-2/MediaObjects/42004_2024_1284_Fig1_HTML.png?as=webp)
a Molecular structure of the DBP-DBBA precursor. b Phenylated nanoribbon Ph-7-13-AGNR obtained after the Ullmann coupling and subsequent cyclodehydrogenation reactions induced at steps T1 and T2 respectively. c [18]-annulene GNR obtained by the on-surface phenyl migration and dehydrogenative meta coupling. The initial position of the migrated phenyl is shown in semitransparent green color.
