Polyacetylene is an ideal system to gain a better understanding of the nature of charge transport in conducting polymers. Now, individual atomically precise polyacetylene chains have been synthesized on a copper surface and characterized using a range of techniques, revealing a doping-induced semiconductor-to-metal transition.
This study provides a platform for studying individual polyacetylene chains in real and reciprocal space, which may be further extended to study the intrinsic properties of non-linear excitons in conducting polymers.
This work was carried out by Dr. Shiyong Wang, Dr. Qiang Sun & colleagues in the group of Prof. Roman Fasel, in collaboration with the group of Prof. Wei Xu at Tongji University, Shanghai.
S. Wang, Q. Sun, O. Gröning, R. Widmer, C. A. Pignedoli, L. Cai, H. Ju, J. Zhu, P. Ruffieux, R. Fasel, W. Xu;
"On-surface synthesis and characterization of individual polyacetylene chains"
Nature Chemistry, 2019, 11(10), 924-930;