Stabilizing surface Ag adatoms into tunable single atom arrays by terminal alkyne assembly

Jing Liu; Xiangyu Fu; Qiwei Chen; Yajie Zhang; Yongfeng Wang; Dahui Zhao; Wei Chen; Guo Qin Xu; Peilin Liao; Kai Wu

doi:10.1039/c6cc06444b

Stabilizing surface Ag adatoms into tunable single atom arrays by terminal alkyne assembly

Chem Commun (Camb). 2016 Oct 27;52(88):12944-12947. doi: 10.1039/c6cc06444b.

Authors

Jing Liu¹, Xiangyu Fu², Qiwei Chen³, Yajie Zhang³, Yongfeng Wang⁴, Dahui Zhao², Wei Chen⁵, Guo Qin Xu⁵, Peilin Liao⁶, Kai Wu⁷

Affiliations

¹ BNLMS, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China. [email protected] and College of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, Liaoning, China.
² MOE Key Lab of Polymer Chemistry & Physics, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
³ BNLMS, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China. [email protected].
⁴ Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University, Beijing 100871, China.
⁵ Department of Chemistry, National University of Singapore, Singapore 117543, Singapore and SPURc, 1 CREATE Way, #15-01, CREATE Tower, Singapore 138602, Singapore.
⁶ Department of Chemical & Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA. [email protected].
⁷ BNLMS, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China. [email protected] and SPURc, 1 CREATE Way, #15-01, CREATE Tower, Singapore 138602, Singapore.

PMID: 27747352
DOI: 10.1039/c6cc06444b

Abstract

Ordered two-dimensional arrays of silver adatoms with tunable metal atom density stabilized by 1,4-diethynyl-2,5-dimethylbenzene, a terminal alkyne, were prepared on Ag(111) and scrutinized by scanning tunneling microscopy and density functional theory calculations. Stabilization of the adatom arrays was attributed to the substrate-mediated electron localizations of the Ag adatom and terminal alkynyl in the molecule.