Issue 7, 2024

Effect of S⋯π interactions on the charge transport properties of the DPP framework

Abstract

In this work, we designed and synthesized two similar π-conjugated molecules, N-alkyl (DPP-R) and N-aryl (DPP-B), to comparatively explore the S⋯π interactions using a scanning tunneling microscopy-based break junction (STM-BJ) technique. The conductance results of the STM-BJ experiments indicated that DPP-R has a 66% greater conductance (G) than DPP-B. Combined with molecular simulations, it was demonstrated that the presence of S⋯π interactions led to a certain degree of orbital overlap of the highest occupied molecular orbital (HOMO), and created a favorable channel for electron transport in the DPP-B junction.

Graphical abstract: Effect of S⋯π interactions on the charge transport properties of the DPP framework

Supplementary files

Article information

Article type
Communication
Submitted
11 Oct 2023
Accepted
05 Dec 2023
First published
05 Dec 2023

Chem. Commun., 2024,60, 815-818

Effect of S⋯π interactions on the charge transport properties of the DPP framework

X. Wang, Z. Hu, L. Liang, Z. Wang, Y. Wang, Y. Li and B. Xiao, Chem. Commun., 2024, 60, 815 DOI: 10.1039/D3CC04995G

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