Modularized Tuning of Charge Transport through Highly Twisted and Localized Single-Molecule Junctions

• DOI: 10.1021/acs.jpclett.9b00796
• Publication Date: 2019-06-05T20:50:20Z
• Authors: Zhixin Chen; Lijue Chen; Jiangpeng Liu; Ruihao Li; Chun Tang; Yuhui Hua; Lichuan Chen; Jia Shi; Yang Yang; Junyang Liu; Jueting Zheng; Lina Chen; Jiankang Cao; Hang Chen; Haiping Xia; Wenjing Hong
• Keywords: Molecular Electronics; Break junction

Although most molecular electronic devices and materials consist of a backbone with planar structure, twisted wires reduced inter-ring π-orbital overlap offer unique opportunity for the modularized fabrication devices. Herein we investigate tuning charge transport through localized molecules by designing highly investigating their single-molecule using scanning tunneling microscopy break junction technique. We find that anthracenediyl-core molecule 90° twist angle shows an unexpectedly high conductance value, which is five times higher than phenylene-core similar configuration, whereas delocalized anthracenediyl core or phenylene almost same. Theoretical calculations revealed angles result in weak interactions between building blocks, orbitals are separated into offers chance every single block. Our findings new strategy design future structure.