文献类型：期刊文献

英文题名：Charge transport of F4TCNQ with different electronic states in single-molecule junctions

作者：Tang, Ajun[1];Li, Yunpeng[1];Wang, Rui[1];Yang, Jiawei[1];Ma, Chaoqi[1];Li, Zhi[1];Zou, Qi[1];Li, Hongxiang[1]

机构：[1]East China Univ Sci & Technol, Inst Fine Chem, Feringa Nobel Prize Scientist Joint Res Ctr, Frontiers Sci Ctr Materiobiol & Dynam Chem,Key Lab, Shanghai 200237, Peoples R China

年份：2023

卷号：59

期号：10

起止页码：1305

外文期刊名：CHEMICAL COMMUNICATIONS

收录：;EI(收录号：20230313400663);WOS:【SCI-EXPANDED(收录号:WOS:000912021900001)】；

语种：英文

外文关键词：Molecules - Negative ions - Optoelectronic devices

摘要：The molecular conductance of 2,3,5,6-tetrafluoro-7,7,8,8,-tetracyano-quinodimethane (F4TCNQ) with different electronic states (neutral, radical anion, and dianion) was investigated by the scanning tunneling microscope break junction (STM-BJ) technique. These electronic states have distinct conductance, and the conductance decreases in the order of neutral > radical anion > dianion. Surprisingly, the molecular conductance of the neutral F4TCNQ junction reaches 10(-1.17)G(0), attributed to its LUMO energy level being close to the Fermi level of the gold electrode. Moreover, we found that neutral F4TCNQ can be gradually reduced to radical anions under a relatively low bias voltage of 100 mV. These results will advance the development of organic optoelectronic devices and molecule electronics.