Key research development by Prof. Mark Reed in molecular electronic devices.

In memory of Professor Mark Reed, who passed away on May 5, 2021, this article summarizes a series of his past groundbreaking developments in molecular electronic devices. Specifically, three key reports are summarized; measurement of the electrical conductance of molecular junctions using the mechanically controlled break junction technique and demonstration of negative differential resistance and orbital gating effect observed in molecular junctions. Also, a brief outlook on molecular electronics research field is addressed.