Small Janus dimer as electric field manipulated molecular clam switch and electric information storage unit

Abstract

A small Janus molecular dimer, as external electric field (Fz) manipulated both a molecular clam switch and a novel electric information storage unit, is found by quantum chemical computations for the first time. The molecular clam switching is intriguing and reversible. A critical Fz value of 95 × 10−4 au causes a dramatically open change in conformation from Closed form to Open form. And a small reversed electric field of Fz = −10 × 10−4 au performs a close change from Open form to Closed form. In the switching process, owing to the existence of a great electric dipole moment (μ) contrast between 0 and 22.13 D, the molecular clam switch may serve as an electric information storage unit. Gratifyingly, the reading, writing, and erasing of binary information on the electric information storage unit are easy. And further calculations show that Janus graphene fragment dimer can also serve as a molecular clam switch. Thus, this work proposes a new molecular switch prototype in the invention of artificial molecular machines, and a novel electric information storage unit in the field of molecular electronics.

Alkali-Metal-Free Coinage Metalides: Specific Pairing and Location of Doping Atoms Bring Forth High Stability and Considerable Nonlinear Optical Response

“…The same case is also true for Cu + -1- Ag – whose β 0 value is dramatically increased from 1624 au (OEEF = 0 au, OFF form) to 35,100 au (OEEF = 2 × 10 –3 au, ON form). These extremely large changes in β 0 values under the imposed OEEFs reinforce the potential applications of these two compounds as new OEEF-driven NLO molecular switches − with the advantages of high sensitivity and fast and reversible switching.…”