On-Surface Synthesis of Heptacene Organometallic Complexes

被引：81

作者：

Urgel, Jose I. ^{[1
]}

Hayashi, Hironobu ^{[3
]}

Di Giovannantonio, Marco ^{[1
]}

Pignedoli, Carlo A. ^{[2
]}

Mishra, Shantanu ^{[1
]}

Deniz, Okan ^{[1
]}

Yamashita, Masataka ^{[3
]}

Dienel, Thomas ^{[1
]}

Ruffieux, Pascal ^{[1
]}

Yamada, Hiroko ^{[3
]}

Fasel, Roman ^{[1
,4
]}

机构：

[1] Empa, Swiss Fed Labs Mat Sci & Technol, CH-8600 Dubendorf, Switzerland

[2] Empa, Swiss Fed Labs Mat Sci & Technol, NCCR MARVEL, CH-8600 Dubendorf, Switzerland

[3] Nara Inst Sci & Technol NAIST, Grad Sch Mat Sci, 8916-5 Takayama Cho, Ikoma 6300192, Japan

[4] Univ Bern, Dept Chem & Biochem, Freiestr 3, CH-3012 Bern, Switzerland

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2017年 / 139卷 / 34期

基金：

瑞士国家科学基金会;

关键词：

GRAPHENE NANORIBBONS; ULLMANN POLYMERIZATION; ELECTRONIC-STRUCTURE; HIGHER ACENES; SOLID-STATE; INTERMEDIATE; PENTACENE; INSIGHT; PHOTOGENERATION; PERSPECTIVES;

D O I：

10.1021/jacs.7b05192

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report the on-surface formation of Au-directed heptacene organometallic complexes on a Au(111) template in an ultrahigh vacuum environment. Successive thermal annealing steps investigated by means of scanning tunneling microscopy, noncontact atomic force microscopy, temperature-programmed desorption and density functional theory reveal the formation of heptacene organometallic complexes via a selective two-step activation of an alpha-diketone-protected heptacene precursor. Furthermore, we demonstrate the efficiency of tip-induced deprotection experiments as a complementary strategy in the complex formation. Our results provide perspectives for the on-surface synthesis of larger acenes featuring potential use in the fields of organic electronics, spintronics and nonlinear optics.

引用

页码：11658 / 11661

页数：4

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