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On-Surface Synthesis of a Nonplanar Porous Nanographene

Authors :
Junzhi Liu
Hartmut Komber
Ashok Keerthi
Kun Xu
Akimitsu Narita
Klaus Müllen
Roman Fasel
Marco Di Giovannantonio
José I. Urgel
Kristjan Eimre
Xinliang Feng
Shiyong Wang
Carlo A. Pignedoli
Pascal Ruffieux
Reinhard Berger
Source :
Xu, Kun; Urgel, José I.; Eimre, Kristjan; Di Giovannantonio, Marco; Keerthi, Ashok; Komber, Hartmut; Wang, Shiyong; Narita, Akimitsu; Berger, Reinhard; Ruffieux, Pascal; Pignedoli, Carlo A.; Liu, Junzhi; Müllen, Klaus; Fasel, Roman; Feng, Xinliang (2019). On-Surface Synthesis of a Nonplanar Porous Nanographene. Journal of the American Chemical Society, 141(19), pp. 7726-7730. American Chemical Society 10.1021/jacs.9b03554 , Xu, K, Urgel, J I, Eimre, K, Di Giovannantonio, M, Keerthi, A, Komber, H, Wang, S, Narita, A, Berger, R, Ruffieux, P, Pignedoli, C A, Liu, J, Müllen, K, Fasel, R & Feng, X 2019, ' On-Surface Synthesis of a Nonplanar Porous Nanographene ', Journal of the American Chemical Society, vol. 141, no. 19, pp. 7726-7730 . https://doi.org/10.1021/jacs.9b03554, Journal of the American Chemical Society

Abstract

[Image: see text] On-surface synthesis provides an effective approach toward the formation of graphene nanostructures that are difficult to achieve via traditional solution chemistry. Here, we report on the design and synthesis of a nonplanar porous nanographene with 78 sp(2) carbon atoms, namely C78. Through a highly selective oxidative cyclodehydrogenation of 2,3,6,7,10,11-hexa(naphthalen-1-yl)triphenylene (2), propeller nanographene precursor 1 was synthesized in solution. Interestingly, although 1 could not be cyclized further in solution, porous nanographene C78 was successfully achieved from 1 by on-surface assisted cyclodehydrogenation on Au(111). The structure and electronic properties of C78 have been investigated by means of scanning tunneling microscopy, noncontact atomic force microscopy, and scanning tunneling spectroscopy, complemented by computational investigations. Our results provide perspectives for the on-surface synthesis of porous graphene nanostructures, offering a promising strategy for the engineering of graphene materials with tailor-made properties.

Details

Language :
English
ISSN :
15205126 and 00027863
Volume :
141
Issue :
19
Database :
OpenAIRE
Journal :
Journal of the American Chemical Society
Accession number :
edsair.doi.dedup.....30d43fc3234db227e6856f6f652d40fe
Full Text :
https://doi.org/10.1021/jacs.9b03554