123rd General Meeting of the KCS

Type Poster Presentation
Area Material Chemistry
Room No. Exhibition Hall 2
Time 4월 19일 (금요일) 11:00~12:30
Code MAT.P-434
Subject Supramolecularly Controlled Second-Order Stark Effect in an Organic-molecular Diode
Authors Soo jin Cho, Gyu Don Kong, Sohyun Park, Hyo Jae Yoon*
Department of Chemistry, Korea University, Korea
Abstract Understanding the supramolecular structure-electric field relationship is a significant chemical challenge in various research areas. We have recently reported that pyrenyl-terminated n-alkanethiolate significantly rectifies tunneling currents in large-area junctions of liquid metal top-contact comprising eutectic gallium-indium. In this presentation, we demonstrate that the on-surface supramolecular structure of the pyrenyl terminal moiety critically determines the electronic function of molecular diode that relies on the second-order Stark effect. Specifically, we reveal that the change in tilt angle of the pyrenyl terminal moiety with respect to the external electric field critically determines the degree of the second-order Stark effect and hence the rectification ratio of the diode.
E-mail tsch516@naver.com