Journal of the American Chemical Society p. 17713 - 17720 (2019)
Update date:2022-08-11
Topics:
Fan, Qitang
Martin-Jimenez, Daniel
Ebeling, Daniel
Krug, Claudio K.
Brechmann, Lea
Kohlmeyer, Corinna
Hilt, Gerhard
Hieringer, Wolfgang
Schirmeisen, André
Gottfried, J. Michael
Various two-dimensional (2D) carbon allotropes with nonalternant topologies, such as pentaheptites and phagraphene, have been proposed. Predictions indicate that these metastable carbon polymorphs, which contain odd-numbered rings, possess unusual (opto)electronic properties. However, none of these materials has been achieved experimentally due to synthetic challenges. In this work, by using on-surface synthesis, nanoribbons of the nonalternant graphene allotropes, phagraphene and tetra-penta-hepta(TPH)-graphene, have been obtained by dehydrogenative C-C coupling of 2,6-polyazulene chains. These chains were formed in a preceding reaction step via on-surface Ullmann coupling of 2,6-dibromoazulene. Low-temperature scanning probe microscopies with CO-functionalized tips and density functional theory calculations have been used to elucidate their structural properties. The proposed synthesis of nonalternant carbon nanoribbons from the fusion of synthetic line-defects may pave the way for large-area preparation of novel 2D carbon allotropes.
View MoreSEA BRGIHT INDUSTRY CO.,LIMITED
Contact:0086 755 8622 3990
Address:Rm 17B3,GuangCaiXinTianDi Bldg,GuiMiao Rd,NanShan District,Shenzhen,China
Contact:+852-8198 2399
Address:9E, Leapont Industrial Building, 18-28 Wo Liu Hang Road, Shatin, New Territories, Hong Kong
website:http://www.hanwayschem.com
Contact:+86-18502787239(whatsapp)
Address:18-1-802, Green Garden, Jianghan District, Wuhan 430023, China
Yingkou Sanzheng New Technology Chemical Industry Co., Ltd.
Contact:+86-417-2927806
Address:yingkou
taicang liyuan chemical co,.ltd
website:http://www.tcliyuanchem.com/productse.php
Contact:86-512-53539583
Address:Room 804,Huaxu Building,No.95,Renmin South Road,Taicang city,Jiangsu Province,China
Doi:10.1016/j.tetlet.2009.03.116
(2009)Doi:10.1016/j.molstruc.2010.10.041
(2011)Doi:10.1016/0040-4039(94)85209-X
(1994)Doi:10.1039/DT9930001681
(1993)Doi:10.1021/op060229k
(2007)Doi:10.1021/ja9800075
(1998)