J. Am. Chem. Soc.: Synthesis of Surface Covalent Organic Frameworks via Dimerization and Cyclotrimerization of Acetyls

Title:

Synthesis of Surface Covalent Organic Frameworks via Dimerization and Cyclotrimerization of Acetyls

Authors:

Biao Yang,^† Jonas Björk,^‡ Haiping Lin,^† Xiaoqing Zhang,^† Haiming Zhang,^† Youyong Li,^† Jian Fan,^† Qing Li,^*,† and Lifeng Chi^{*, †}

Institutions:

^†Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials, Soochow University, Suzhou 215123, P. R. China
^‡Department of Physics, Chemistry and Biology, IFM, Linköping University, 58183 Linköping, Sweden

Abstract:

The formation of additional phenyl rings on surfaces is of particular interest because it allows for the building-up of surface covalent organic frameworks. In this work, we show for the first time that the cyclotrimerization of acetyls to aromatics provides a promising approach to 2D conjugated covalent networks on surfaces under ultrahigh vacuum. With the aid of scanning tunneling microscopy, we have systematically studied the reaction pathways and the products. With the combination of density functional theory calculations and X-ray photoemission spectroscopy, the surface-assisted reaction mechanism, which is different from that in solution, was explored.

IF:

11.444

Link:

http://pubs.acs.org/doi/abs/10.1021/jacs.5b00774